Commit graph

609 commits

Author SHA1 Message Date
Wolfram Sang
3e7bed5271 macintosh: therm_windtunnel: drop using attach_adapter
As we now have deferred probing, we can use a custom mechanism and
finally get rid of the legacy interface from the i2c core.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
2018-08-24 14:42:42 +02:00
Finn Thain
6edc22fc9c macintosh/via-pmu: Disambiguate interrupt statistics
Some of the event counters are overloaded which makes it very
difficult to interpret their values.

Counter 0 is supposed to report CB1 interrupts but it can also count
PMU_INT_WAITING_CHARGER events.

Counter 1 is supposed to report GPIO interrupts but it can also count
other events (depending upon the value of the PMU_INT_ADB bit).

Disambiguate these statistics with dedicated counters for GPIO and
CB1 interrupts.

Comments in the MkLinux source code say that the type 0 and type 1
interrupts are model-specific. Label them as "unknown".

This change to the contents of /proc/pmu/interrupts is by necessity
visible in userland. However, packages which interact with the PMU
(that is, pbbuttonsd, pmac-utils and pmud) don't open this file.
AFAIK, user software has no need to poll these counters.

Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-07-31 19:56:43 +10:00
Finn Thain
b5c7cccaac macintosh/via-pmu: Clean up interrupt statistics
Replace an open-coded ffs() with the function call.
Simplify an if-else cascade using a switch statement.
Correct a typo and an indentation issue.

Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-07-31 19:56:43 +10:00
Finn Thain
ebd722275f macintosh/via-pmu: Replace via-pmu68k driver with via-pmu driver
Now that the PowerMac via-pmu driver supports m68k PowerBooks,
switch over to that driver and remove the via-pmu68k driver.

Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-07-31 19:56:42 +10:00
Finn Thain
54c990775f macintosh/via-pmu68k: Don't load driver on unsupported hardware
Don't load the via-pmu68k driver on early PowerBooks. The M50753 PMU
device found in those models was never supported by this driver.
Attempting to load the driver usually causes a boot hang.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Michael Schmitz <schmitzmic@gmail.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-07-31 19:56:42 +10:00
Finn Thain
c2f028b6a0 macintosh/via-pmu: Explicitly specify CONFIG_PPC_PMAC dependencies
At present, CONFIG_ADB_PMU depends on CONFIG_PPC_PMAC. When this gets
relaxed to CONFIG_PPC_PMAC || CONFIG_MAC, those Kconfig symbols with
implicit deps on PPC_PMAC will need explicit deps. Add them now.
No functional change.

Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-07-31 19:56:41 +10:00
Finn Thain
c16a85a5aa macintosh/via-pmu: Add support for m68k PowerBooks
Put #ifdefs around the Open Firmware, xmon, interrupt dispatch,
battery and suspend code. Add the necessary interrupt handling to
support m68k PowerBooks.

The pmu_kind value is available to userspace using the
PMU_IOC_GET_MODEL ioctl. It is not clear yet what hardware classes
are be needed to describe m68k PowerBook models, so pmu_kind is given
the provisional value PMU_UNKNOWN.

To find out about the hardware, user programs can use /proc/bootinfo
or /proc/hardware, or send the PMU_GET_VERSION command using /dev/adb.

Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-07-31 19:56:41 +10:00
Finn Thain
c70c35da52 macintosh/via-pmu: Replace via pointer with via1 and via2 pointers
On most PowerPC Macs, the PMU driver uses the shift register and
IO port B from a single VIA chip.

On 68k and early PowerPC PowerBooks, the driver uses the shift register
from one VIA chip together with IO port B from another.

Replace via with via1 and via2 to accommodate this. For the
CONFIG_PPC_PMAC case, set via1 = via2 so there is no change.

Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-07-31 19:56:40 +10:00
Finn Thain
c57902d52e macintosh/via-pmu: Enhance state machine with new 'uninitialized' state
On 68k Macs, the via/vias pointer can't be used to determine whether
the PMU driver has been initialized. For portability, add a new state
to indicate that via_find_pmu() succeeded.

After via_find_pmu() executes, testing vias == NULL is equivalent to
testing via == NULL. Replace these tests with pmu_state == uninitialized
which is simpler and more consistent. No functional change.

Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-07-31 19:56:40 +10:00
Finn Thain
7ad94699a9 macintosh/via-pmu: Don't clear shift register interrupt flag twice
The shift register interrupt flag gets cleared in via_pmu_interrupt()
and once again in pmu_sr_intr(). Fix this theoretical race condition.

Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-07-31 19:56:39 +10:00
Finn Thain
576d5290d6 macintosh/via-pmu: Add missing mmio accessors
Add missing in_8() accessors to init_pmu() and pmu_sr_intr().

This fixes several sparse warnings:
drivers/macintosh/via-pmu.c:536:29: warning: dereference of noderef expression
drivers/macintosh/via-pmu.c:537:33: warning: dereference of noderef expression
drivers/macintosh/via-pmu.c:1455:17: warning: dereference of noderef expression
drivers/macintosh/via-pmu.c:1456:69: warning: dereference of noderef expression

Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-07-31 19:56:39 +10:00
Finn Thain
73f4447d43 macintosh/via-pmu: Fix section mismatch warning
The pmu_init() function has the __init qualifier, but the ops struct
that holds a pointer to it does not. This causes a build warning.
The driver works fine because the pointer is only dereferenced early.

The function is so small that there's negligible benefit from using
the __init qualifier. Remove it to fix the warning, consistent with
the other ADB drivers.

Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-07-31 19:56:39 +10:00
Linus Torvalds
c90fca951e powerpc updates for 4.18
Notable changes:
 
  - Support for split PMD page table lock on 64-bit Book3S (Power8/9).
 
  - Add support for HAVE_RELIABLE_STACKTRACE, so we properly support live
    patching again.
 
  - Add support for patching barrier_nospec in copy_from_user() and syscall entry.
 
  - A couple of fixes for our data breakpoints on Book3S.
 
  - A series from Nick optimising TLB/mm handling with the Radix MMU.
 
  - Numerous small cleanups to squash sparse/gcc warnings from Mathieu Malaterre.
 
  - Several series optimising various parts of the 32-bit code from Christophe Leroy.
 
  - Removal of support for two old machines, "SBC834xE" and "C2K" ("GEFanuc,C2K"),
    which is why the diffstat has so many deletions.
 
 And many other small improvements & fixes.
 
 There's a few out-of-area changes. Some minor ftrace changes OK'ed by Steve, and
 a fix to our powernv cpuidle driver. Then there's a series touching mm, x86 and
 fs/proc/task_mmu.c, which cleans up some details around pkey support. It was
 ack'ed/reviewed by Ingo & Dave and has been in next for several weeks.
 
 Thanks to:
   Akshay Adiga, Alastair D'Silva, Alexey Kardashevskiy, Al Viro, Andrew
   Donnellan, Aneesh Kumar K.V, Anju T Sudhakar, Arnd Bergmann, Balbir Singh,
   Cédric Le Goater, Christophe Leroy, Christophe Lombard, Colin Ian King, Dave
   Hansen, Fabio Estevam, Finn Thain, Frederic Barrat, Gautham R. Shenoy, Haren
   Myneni, Hari Bathini, Ingo Molnar, Jonathan Neuschäfer, Josh Poimboeuf,
   Kamalesh Babulal, Madhavan Srinivasan, Mahesh Salgaonkar, Mark Greer, Mathieu
   Malaterre, Matthew Wilcox, Michael Neuling, Michal Suchanek, Naveen N. Rao,
   Nicholas Piggin, Nicolai Stange, Olof Johansson, Paul Gortmaker, Paul
   Mackerras, Peter Rosin, Pridhiviraj Paidipeddi, Ram Pai, Rashmica Gupta, Ravi
   Bangoria, Russell Currey, Sam Bobroff, Samuel Mendoza-Jonas, Segher
   Boessenkool, Shilpasri G Bhat, Simon Guo, Souptick Joarder, Stewart Smith,
   Thiago Jung Bauermann, Torsten Duwe, Vaibhav Jain, Wei Yongjun, Wolfram Sang,
   Yisheng Xie, YueHaibing.
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Merge tag 'powerpc-4.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:
 "Notable changes:

   - Support for split PMD page table lock on 64-bit Book3S (Power8/9).

   - Add support for HAVE_RELIABLE_STACKTRACE, so we properly support
     live patching again.

   - Add support for patching barrier_nospec in copy_from_user() and
     syscall entry.

   - A couple of fixes for our data breakpoints on Book3S.

   - A series from Nick optimising TLB/mm handling with the Radix MMU.

   - Numerous small cleanups to squash sparse/gcc warnings from Mathieu
     Malaterre.

   - Several series optimising various parts of the 32-bit code from
     Christophe Leroy.

   - Removal of support for two old machines, "SBC834xE" and "C2K"
     ("GEFanuc,C2K"), which is why the diffstat has so many deletions.

  And many other small improvements & fixes.

  There's a few out-of-area changes. Some minor ftrace changes OK'ed by
  Steve, and a fix to our powernv cpuidle driver. Then there's a series
  touching mm, x86 and fs/proc/task_mmu.c, which cleans up some details
  around pkey support. It was ack'ed/reviewed by Ingo & Dave and has
  been in next for several weeks.

  Thanks to: Akshay Adiga, Alastair D'Silva, Alexey Kardashevskiy, Al
  Viro, Andrew Donnellan, Aneesh Kumar K.V, Anju T Sudhakar, Arnd
  Bergmann, Balbir Singh, Cédric Le Goater, Christophe Leroy, Christophe
  Lombard, Colin Ian King, Dave Hansen, Fabio Estevam, Finn Thain,
  Frederic Barrat, Gautham R. Shenoy, Haren Myneni, Hari Bathini, Ingo
  Molnar, Jonathan Neuschäfer, Josh Poimboeuf, Kamalesh Babulal,
  Madhavan Srinivasan, Mahesh Salgaonkar, Mark Greer, Mathieu Malaterre,
  Matthew Wilcox, Michael Neuling, Michal Suchanek, Naveen N. Rao,
  Nicholas Piggin, Nicolai Stange, Olof Johansson, Paul Gortmaker, Paul
  Mackerras, Peter Rosin, Pridhiviraj Paidipeddi, Ram Pai, Rashmica
  Gupta, Ravi Bangoria, Russell Currey, Sam Bobroff, Samuel
  Mendoza-Jonas, Segher Boessenkool, Shilpasri G Bhat, Simon Guo,
  Souptick Joarder, Stewart Smith, Thiago Jung Bauermann, Torsten Duwe,
  Vaibhav Jain, Wei Yongjun, Wolfram Sang, Yisheng Xie, YueHaibing"

* tag 'powerpc-4.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (251 commits)
  powerpc/64s/radix: Fix missing ptesync in flush_cache_vmap
  cpuidle: powernv: Fix promotion from snooze if next state disabled
  powerpc: fix build failure by disabling attribute-alias warning in pci_32
  ocxl: Fix missing unlock on error in afu_ioctl_enable_p9_wait()
  powerpc-opal: fix spelling mistake "Uniterrupted" -> "Uninterrupted"
  powerpc: fix spelling mistake: "Usupported" -> "Unsupported"
  powerpc/pkeys: Detach execute_only key on !PROT_EXEC
  powerpc/powernv: copy/paste - Mask SO bit in CR
  powerpc: Remove core support for Marvell mv64x60 hostbridges
  powerpc/boot: Remove core support for Marvell mv64x60 hostbridges
  powerpc/boot: Remove support for Marvell mv64x60 i2c controller
  powerpc/boot: Remove support for Marvell MPSC serial controller
  powerpc/embedded6xx: Remove C2K board support
  powerpc/lib: optimise PPC32 memcmp
  powerpc/lib: optimise 32 bits __clear_user()
  powerpc/time: inline arch_vtime_task_switch()
  powerpc/Makefile: set -mcpu=860 flag for the 8xx
  powerpc: Implement csum_ipv6_magic in assembly
  powerpc/32: Optimise __csum_partial()
  powerpc/lib: Adjust .balign inside string functions for PPC32
  ...
2018-06-07 10:23:33 -07:00
Mathieu Malaterre
d8731527ac powerpc/sparse: Fix plain integer as NULL pointer warning
Trivial fix to remove the following sparse warnings:

  arch/powerpc/kernel/module_32.c:112:74: warning: Using plain integer as NULL pointer
  arch/powerpc/kernel/module_32.c:117:74: warning: Using plain integer as NULL pointer
  drivers/macintosh/via-pmu.c:1155:28: warning: Using plain integer as NULL pointer
  drivers/macintosh/via-pmu.c:1230:20: warning: Using plain integer as NULL pointer
  drivers/macintosh/via-pmu.c:1385:36: warning: Using plain integer as NULL pointer
  drivers/macintosh/via-pmu.c:1752:23: warning: Using plain integer as NULL pointer
  drivers/macintosh/via-pmu.c:2084:19: warning: Using plain integer as NULL pointer
  drivers/macintosh/via-pmu.c:2110:32: warning: Using plain integer as NULL pointer
  drivers/macintosh/via-pmu.c:2167:19: warning: Using plain integer as NULL pointer
  drivers/macintosh/via-pmu.c:2183:19: warning: Using plain integer as NULL pointer
  drivers/macintosh/via-pmu.c:277:20: warning: Using plain integer as NULL pointer
  arch/powerpc/platforms/powermac/setup.c:155:67: warning: Using plain integer as NULL pointer
  arch/powerpc/platforms/powermac/setup.c:247:27: warning: Using plain integer as NULL pointer
  arch/powerpc/platforms/powermac/setup.c:249:27: warning: Using plain integer as NULL pointer
  arch/powerpc/platforms/powermac/setup.c:252:37: warning: Using plain integer as NULL pointer
  arch/powerpc/mm/tlb_hash32.c:127:21: warning: Using plain integer as NULL pointer
  arch/powerpc/mm/tlb_hash32.c:148:21: warning: Using plain integer as NULL pointer
  arch/powerpc/mm/tlb_hash32.c:44:21: warning: Using plain integer as NULL pointer
  arch/powerpc/mm/tlb_hash32.c:57:21: warning: Using plain integer as NULL pointer
  arch/powerpc/mm/tlb_hash32.c:87:21: warning: Using plain integer as NULL pointer
  arch/powerpc/kernel/btext.c:160:31: warning: Using plain integer as NULL pointer
  arch/powerpc/kernel/btext.c:167:22: warning: Using plain integer as NULL pointer
  arch/powerpc/kernel/btext.c:274:21: warning: Using plain integer as NULL pointer
  arch/powerpc/kernel/btext.c:285:31: warning: Using plain integer as NULL pointer
  arch/powerpc/include/asm/hugetlb.h:204:16: warning: Using plain integer as NULL pointer
  arch/powerpc/mm/ppc_mmu_32.c:170:21: warning: Using plain integer as NULL pointer
  arch/powerpc/platforms/powermac/pci.c:1227:23: warning: Using plain integer as NULL pointer
  arch/powerpc/platforms/powermac/pci.c:65:24: warning: Using plain integer as NULL pointer

Also use `--fix` command line option from `script/checkpatch --strict` to
remove the following:

  CHECK: Comparison to NULL could be written "!dispDeviceBase"
  #72: FILE: arch/powerpc/kernel/btext.c:160:
  +	if (dispDeviceBase == NULL)

  CHECK: Comparison to NULL could be written "!vbase"
  #80: FILE: arch/powerpc/kernel/btext.c:167:
  +	if (vbase == NULL)

  CHECK: Comparison to NULL could be written "!base"
  #89: FILE: arch/powerpc/kernel/btext.c:274:
  +	if (base == NULL)

  CHECK: Comparison to NULL could be written "!dispDeviceBase"
  #98: FILE: arch/powerpc/kernel/btext.c:285:
  +	if (dispDeviceBase == NULL)

  CHECK: Comparison to NULL could be written "strstr"
  #117: FILE: arch/powerpc/kernel/module_32.c:117:
  +		if (strstr(secstrings + sechdrs[i].sh_name, ".debug") != NULL)

  CHECK: Comparison to NULL could be written "!Hash"
  #130: FILE: arch/powerpc/mm/ppc_mmu_32.c:170:
  +	if (Hash == NULL)

  CHECK: Comparison to NULL could be written "Hash"
  #143: FILE: arch/powerpc/mm/tlb_hash32.c:44:
  +	if (Hash != NULL) {

  CHECK: Comparison to NULL could be written "!Hash"
  #152: FILE: arch/powerpc/mm/tlb_hash32.c:57:
  +	if (Hash == NULL) {

  CHECK: Comparison to NULL could be written "!Hash"
  #161: FILE: arch/powerpc/mm/tlb_hash32.c:87:
  +	if (Hash == NULL) {

  CHECK: Comparison to NULL could be written "!Hash"
  #170: FILE: arch/powerpc/mm/tlb_hash32.c:127:
  +	if (Hash == NULL) {

  CHECK: Comparison to NULL could be written "!Hash"
  #179: FILE: arch/powerpc/mm/tlb_hash32.c:148:
  +	if (Hash == NULL) {

  ERROR: space required after that ';' (ctx:VxV)
  #192: FILE: arch/powerpc/platforms/powermac/pci.c:65:
  +	for (; node != NULL;node = node->sibling) {

  CHECK: Comparison to NULL could be written "node"
  #192: FILE: arch/powerpc/platforms/powermac/pci.c:65:
  +	for (; node != NULL;node = node->sibling) {

  CHECK: Comparison to NULL could be written "!region"
  #201: FILE: arch/powerpc/platforms/powermac/pci.c:1227:
  +	if (region == NULL)

  CHECK: Comparison to NULL could be written "of_get_property"
  #214: FILE: arch/powerpc/platforms/powermac/setup.c:155:
  +		if (of_get_property(np, "cache-unified", NULL) != NULL && dc) {

  CHECK: Comparison to NULL could be written "!np"
  #223: FILE: arch/powerpc/platforms/powermac/setup.c:247:
  +		if (np == NULL)

  CHECK: Comparison to NULL could be written "np"
  #226: FILE: arch/powerpc/platforms/powermac/setup.c:249:
  +		if (np != NULL) {

  CHECK: Comparison to NULL could be written "l2cr"
  #230: FILE: arch/powerpc/platforms/powermac/setup.c:252:
  +			if (l2cr != NULL) {

  CHECK: Comparison to NULL could be written "via"
  #243: FILE: drivers/macintosh/via-pmu.c:277:
  +	if (via != NULL)

  CHECK: Comparison to NULL could be written "current_req"
  #252: FILE: drivers/macintosh/via-pmu.c:1155:
  +	if (current_req != NULL) {

  CHECK: Comparison to NULL could be written "!req"
  #261: FILE: drivers/macintosh/via-pmu.c:1230:
  +	if (req == NULL || pmu_state != idle

  CHECK: Comparison to NULL could be written "!req"
  #270: FILE: drivers/macintosh/via-pmu.c:1385:
  +			if (req == NULL) {

  CHECK: Comparison to NULL could be written "!pp"
  #288: FILE: drivers/macintosh/via-pmu.c:2084:
  +	if (pp == NULL)

  CHECK: Comparison to NULL could be written "!pp"
  #297: FILE: drivers/macintosh/via-pmu.c:2110:
  +	if (count < 1 || pp == NULL)

  CHECK: Comparison to NULL could be written "!pp"
  #306: FILE: drivers/macintosh/via-pmu.c:2167:
  +	if (pp == NULL)

  CHECK: Comparison to NULL could be written "pp"
  #315: FILE: drivers/macintosh/via-pmu.c:2183:
  +	if (pp != NULL) {

Link: https://github.com/linuxppc/linux/issues/37
Signed-off-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-05-25 12:04:38 +10:00
Christoph Hellwig
3f3942aca6 proc: introduce proc_create_single{,_data}
Variants of proc_create{,_data} that directly take a seq_file show
callback and drastically reduces the boilerplate code in the callers.

All trivial callers converted over.

Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-05-16 07:23:35 +02:00
Colin Ian King
942cc40ae4 macintosh/windfarm: fix spelling mistake: "ttarged" -> "ttarget"
Trivial fix to spelling mistake in debug messages of a structure
field name

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-05-14 23:10:33 +10:00
Linus Torvalds
49a695ba72 powerpc updates for 4.17
Notable changes:
 
  - Support for 4PB user address space on 64-bit, opt-in via mmap().
 
  - Removal of POWER4 support, which was accidentally broken in 2016 and no one
    noticed, and blocked use of some modern instructions.
 
  - Workarounds so that the hypervisor can enable Transactional Memory on Power9.
 
  - A series to disable the DAWR (Data Address Watchpoint Register) on Power9.
 
  - More information displayed in the meltdown/spectre_v1/v2 sysfs files.
 
  - A vpermxor (Power8 Altivec) implementation for the raid6 Q Syndrome.
 
  - A big series to make the allocation of our pacas (per cpu area), kernel page
    tables, and per-cpu stacks NUMA aware when using the Radix MMU on Power9.
 
 And as usual many fixes, reworks and cleanups.
 
 Thanks to:
   Aaro Koskinen, Alexandre Belloni, Alexey Kardashevskiy, Alistair Popple, Andy
   Shevchenko, Aneesh Kumar K.V, Anshuman Khandual, Balbir Singh, Benjamin
   Herrenschmidt, Christophe Leroy, Christophe Lombard, Cyril Bur, Daniel Axtens,
   Dave Young, Finn Thain, Frederic Barrat, Gustavo Romero, Horia Geantă,
   Jonathan Neuschäfer, Kees Cook, Larry Finger, Laurent Dufour, Laurent Vivier,
   Logan Gunthorpe, Madhavan Srinivasan, Mark Greer, Mark Hairgrove, Markus
   Elfring, Mathieu Malaterre, Matt Brown, Matt Evans, Mauricio Faria de
   Oliveira, Michael Neuling, Naveen N. Rao, Nicholas Piggin, Paul Mackerras,
   Philippe Bergheaud, Ram Pai, Rob Herring, Sam Bobroff, Segher Boessenkool,
   Simon Guo, Simon Horman, Stewart Smith, Sukadev Bhattiprolu, Suraj Jitindar
   Singh, Thiago Jung Bauermann, Vaibhav Jain, Vaidyanathan Srinivasan, Vasant
   Hegde, Wei Yongjun.
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Merge tag 'powerpc-4.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:
 "Notable changes:

   - Support for 4PB user address space on 64-bit, opt-in via mmap().

   - Removal of POWER4 support, which was accidentally broken in 2016
     and no one noticed, and blocked use of some modern instructions.

   - Workarounds so that the hypervisor can enable Transactional Memory
     on Power9.

   - A series to disable the DAWR (Data Address Watchpoint Register) on
     Power9.

   - More information displayed in the meltdown/spectre_v1/v2 sysfs
     files.

   - A vpermxor (Power8 Altivec) implementation for the raid6 Q
     Syndrome.

   - A big series to make the allocation of our pacas (per cpu area),
     kernel page tables, and per-cpu stacks NUMA aware when using the
     Radix MMU on Power9.

  And as usual many fixes, reworks and cleanups.

  Thanks to: Aaro Koskinen, Alexandre Belloni, Alexey Kardashevskiy,
  Alistair Popple, Andy Shevchenko, Aneesh Kumar K.V, Anshuman Khandual,
  Balbir Singh, Benjamin Herrenschmidt, Christophe Leroy, Christophe
  Lombard, Cyril Bur, Daniel Axtens, Dave Young, Finn Thain, Frederic
  Barrat, Gustavo Romero, Horia Geantă, Jonathan Neuschäfer, Kees Cook,
  Larry Finger, Laurent Dufour, Laurent Vivier, Logan Gunthorpe,
  Madhavan Srinivasan, Mark Greer, Mark Hairgrove, Markus Elfring,
  Mathieu Malaterre, Matt Brown, Matt Evans, Mauricio Faria de Oliveira,
  Michael Neuling, Naveen N. Rao, Nicholas Piggin, Paul Mackerras,
  Philippe Bergheaud, Ram Pai, Rob Herring, Sam Bobroff, Segher
  Boessenkool, Simon Guo, Simon Horman, Stewart Smith, Sukadev
  Bhattiprolu, Suraj Jitindar Singh, Thiago Jung Bauermann, Vaibhav
  Jain, Vaidyanathan Srinivasan, Vasant Hegde, Wei Yongjun"

* tag 'powerpc-4.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (207 commits)
  powerpc/64s/idle: Fix restore of AMOR on POWER9 after deep sleep
  powerpc/64s: Fix POWER9 DD2.2 and above in cputable features
  powerpc/64s: Fix pkey support in dt_cpu_ftrs, add CPU_FTR_PKEY bit
  powerpc/64s: Fix dt_cpu_ftrs to have restore_cpu clear unwanted LPCR bits
  Revert "powerpc/64s/idle: POWER9 ESL=0 stop avoid save/restore overhead"
  powerpc: iomap.c: introduce io{read|write}64_{lo_hi|hi_lo}
  powerpc: io.h: move iomap.h include so that it can use readq/writeq defs
  cxl: Fix possible deadlock when processing page faults from cxllib
  powerpc/hw_breakpoint: Only disable hw breakpoint if cpu supports it
  powerpc/mm/radix: Update command line parsing for disable_radix
  powerpc/mm/radix: Parse disable_radix commandline correctly.
  powerpc/mm/hugetlb: initialize the pagetable cache correctly for hugetlb
  powerpc/mm/radix: Update pte fragment count from 16 to 256 on radix
  powerpc/mm/keys: Update documentation and remove unnecessary check
  powerpc/64s/idle: POWER9 ESL=0 stop avoid save/restore overhead
  powerpc/64s/idle: Consolidate power9_offline_stop()/power9_idle_stop()
  powerpc/powernv: Always stop secondaries before reboot/shutdown
  powerpc: hard disable irqs in smp_send_stop loop
  powerpc: use NMI IPI for smp_send_stop
  powerpc/powernv: Fix SMT4 forcing idle code
  ...
2018-04-07 12:08:19 -07:00
Aaro Koskinen
e283655b5a drivers: macintosh: rack-meter: really fix bogus memsets
We should zero an array using sizeof instead of number of elements.

Fixes the following compiler (GCC 7.3.0) warnings:

drivers/macintosh/rack-meter.c: In function 'rackmeter_do_pause':
drivers/macintosh/rack-meter.c:157:2: warning: 'memset' used with length equal to number of elements without multiplication by element size [-Wmemset-elt-size]
drivers/macintosh/rack-meter.c:158:2: warning: 'memset' used with length equal to number of elements without multiplication by element size [-Wmemset-elt-size]

Fixes: 4f7bef7a9f ("drivers: macintosh: rack-meter: fix bogus memsets")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-03-31 00:10:35 +11:00
Finn Thain
3a52f6f980 macintosh/adb: Use C99 initializers for struct adb_driver instances
No change to object files.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-03-31 00:10:32 +11:00
Markus Elfring
a0828cf57a powerpc: Use sizeof(*foo) rather than sizeof(struct foo)
It's slightly less error prone to use sizeof(*foo) rather than
specifying the type.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
[mpe: Consolidate into one patch, rewrite change log]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-03-20 16:47:53 +11:00
Finn Thain
a64138ec15 macintosh/via-pmu68k: Initialize PMU driver with setup_arch and arch_initcall
The PMU watchdog will power down the system if the kernel is slow
to start up, e.g. due to unpacking a large initrd. The powerpc
version of this driver (via-pmu.c) has a solution for the same
problem. It uses this call sequence:

setup_arch
	find_via_pmu
		init_pmu
...
arch_initcall
	via_pmu_start

Bring via-pmu68k.c into line with via-pmu.c to fix this issue.

Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2018-03-19 10:22:59 +01:00
Mathieu Malaterre
58935176ad powerpc/via-pmu: Fix section mismatch warning
Make the struct via_pmu_driver const to avoid following warning:

WARNING: vmlinux.o(.data+0x4739c): Section mismatch in reference from the variable via_pmu_driver to the function .init.text:pmu_init()
The variable via_pmu_driver references
the function __init pmu_init()
If the reference is valid then annotate the
variable with __init* or __refdata (see linux/init.h) or name the variable:
*_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console

Signed-off-by: Mathieu Malaterre <malat@debian.org>
Suggested-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-03-13 15:10:15 +11:00
Larry Finger
47d703e1d5 macintosh: Add module license to ans-lcd
In kernel 4.15, the modprobe step on my PowerBook G4 started complaining that
there was no module license for ans-lcd.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-03-13 15:10:14 +11:00
Christoph Hellwig
7bcfab202c powerpc/macio: set a proper dma_coherent_mask
We have expected busses to set up a coherent mask to properly use the
common dma mapping code for a long time, and now that I've added a warning
macio turned out to not set one up yet.  This sets it to the same value
as the dma_mask, which seems to be what the drivers expect.

Reported-by: Mathieu Malaterre <malat@debian.org>
Tested-by: Mathieu Malaterre <malat@debian.org>
Reported-by: Meelis Roos <mroos@linux.ee>
Tested-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-02-13 08:58:53 -08:00
Linus Torvalds
a9a08845e9 vfs: do bulk POLL* -> EPOLL* replacement
This is the mindless scripted replacement of kernel use of POLL*
variables as described by Al, done by this script:

    for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do
        L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'`
        for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done
    done

with de-mangling cleanups yet to come.

NOTE! On almost all architectures, the EPOLL* constants have the same
values as the POLL* constants do.  But they keyword here is "almost".
For various bad reasons they aren't the same, and epoll() doesn't
actually work quite correctly in some cases due to this on Sparc et al.

The next patch from Al will sort out the final differences, and we
should be all done.

Scripted-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-02-11 14:34:03 -08:00
Linus Torvalds
105cf3c8c6 pci-v4.16-changes
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Merge tag 'pci-v4.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:

 - skip AER driver error recovery callbacks for correctable errors
   reported via ACPI APEI, as we already do for errors reported via the
   native path (Tyler Baicar)

 - fix DPC shared interrupt handling (Alex Williamson)

 - print full DPC interrupt number (Keith Busch)

 - enable DPC only if AER is available (Keith Busch)

 - simplify DPC code (Bjorn Helgaas)

 - calculate ASPM L1 substate parameter instead of hardcoding it (Bjorn
   Helgaas)

 - enable Latency Tolerance Reporting for ASPM L1 substates (Bjorn
   Helgaas)

 - move ASPM internal interfaces out of public header (Bjorn Helgaas)

 - allow hot-removal of VGA devices (Mika Westerberg)

 - speed up unplug and shutdown by assuming Thunderbolt controllers
   don't support Command Completed events (Lukas Wunner)

 - add AtomicOps support for GPU and Infiniband drivers (Felix Kuehling,
   Jay Cornwall)

 - expose "ari_enabled" in sysfs to help NIC naming (Stuart Hayes)

 - clean up PCI DMA interface usage (Christoph Hellwig)

 - remove PCI pool API (replaced with DMA pool) (Romain Perier)

 - deprecate pci_get_bus_and_slot(), which assumed PCI domain 0 (Sinan
   Kaya)

 - move DT PCI code from drivers/of/ to drivers/pci/ (Rob Herring)

 - add PCI-specific wrappers for dev_info(), etc (Frederick Lawler)

 - remove warnings on sysfs mmap failure (Bjorn Helgaas)

 - quiet ROM validation messages (Alex Deucher)

 - remove redundant memory alloc failure messages (Markus Elfring)

 - fill in types for compile-time VGA and other I/O port resources
   (Bjorn Helgaas)

 - make "pci=pcie_scan_all" work for Root Ports as well as Downstream
   Ports to help AmigaOne X1000 (Bjorn Helgaas)

 - add SPDX tags to all PCI files (Bjorn Helgaas)

 - quirk Marvell 9128 DMA aliases (Alex Williamson)

 - quirk broken INTx disable on Ceton InfiniTV4 (Bjorn Helgaas)

 - fix CONFIG_PCI=n build by adding dummy pci_irqd_intx_xlate() (Niklas
   Cassel)

 - use DMA API to get MSI address for DesignWare IP (Niklas Cassel)

 - fix endpoint-mode DMA mask configuration (Kishon Vijay Abraham I)

 - fix ARTPEC-6 incorrect IS_ERR() usage (Wei Yongjun)

 - add support for ARTPEC-7 SoC (Niklas Cassel)

 - add endpoint-mode support for ARTPEC (Niklas Cassel)

 - add Cadence PCIe host and endpoint controller driver (Cyrille
   Pitchen)

 - handle multiple INTx status bits being set in dra7xx (Vignesh R)

 - translate dra7xx hwirq range to fix INTD handling (Vignesh R)

 - remove deprecated Exynos PHY initialization code (Jaehoon Chung)

 - fix MSI erratum workaround for HiSilicon Hip06/Hip07 (Dongdong Liu)

 - fix NULL pointer dereference in iProc BCMA driver (Ray Jui)

 - fix Keystone interrupt-controller-node lookup (Johan Hovold)

 - constify qcom driver structures (Julia Lawall)

 - rework Tegra config space mapping to increase space available for
   endpoints (Vidya Sagar)

 - simplify Tegra driver by using bus->sysdata (Manikanta Maddireddy)

 - remove PCI_REASSIGN_ALL_BUS usage on Tegra (Manikanta Maddireddy)

 - add support for Global Fabric Manager Server (GFMS) event to
   Microsemi Switchtec switch driver (Logan Gunthorpe)

 - add IDs for Switchtec PSX 24xG3 and PSX 48xG3 (Kelvin Cao)

* tag 'pci-v4.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (140 commits)
  PCI: cadence: Add EndPoint Controller driver for Cadence PCIe controller
  dt-bindings: PCI: cadence: Add DT bindings for Cadence PCIe endpoint controller
  PCI: endpoint: Fix EPF device name to support multi-function devices
  PCI: endpoint: Add the function number as argument to EPC ops
  PCI: cadence: Add host driver for Cadence PCIe controller
  dt-bindings: PCI: cadence: Add DT bindings for Cadence PCIe host controller
  PCI: Add vendor ID for Cadence
  PCI: Add generic function to probe PCI host controllers
  PCI: generic: fix missing call of pci_free_resource_list()
  PCI: OF: Add generic function to parse and allocate PCI resources
  PCI: Regroup all PCI related entries into drivers/pci/Makefile
  PCI/DPC: Reformat DPC register definitions
  PCI/DPC: Add and use DPC Status register field definitions
  PCI/DPC: Squash dpc_rp_pio_get_info() into dpc_process_rp_pio_error()
  PCI/DPC: Remove unnecessary RP PIO register structs
  PCI/DPC: Push dpc->rp_pio_status assignment into dpc_rp_pio_get_info()
  PCI/DPC: Squash dpc_rp_pio_print_error() into dpc_rp_pio_get_info()
  PCI/DPC: Make RP PIO log size check more generic
  PCI/DPC: Rename local "status" to "dpc_status"
  PCI/DPC: Squash dpc_rp_pio_print_tlp_header() into dpc_rp_pio_print_error()
  ...
2018-02-06 09:59:40 -08:00
Linus Torvalds
03f51d4efa powerpc updates for 4.16
Highlights:
 
  - Enable support for memory protection keys aka "pkeys" on Power7/8/9 when
    using the hash table MMU.
 
  - Extend our interrupt soft masking to support masking PMU interrupts as well
    as "normal" interrupts, and then use that to implement local_t for a ~4x
    speedup vs the current atomics-based implementation.
 
  - A new driver "ocxl" for "Open Coherent Accelerator Processor Interface
    (OpenCAPI)" devices.
 
  - Support for new device tree properties on PowerVM to describe hotpluggable
    memory and devices.
 
  - Add support for CLOCK_{REALTIME/MONOTONIC}_COARSE to the 64-bit VDSO.
 
  - Freescale updates from Scott:
      "Contains fixes for CPM GPIO and an FSL PCI erratum workaround, plus a
       minor cleanup patch."
 
 As well as quite a lot of other changes all over the place, and small fixes and
 cleanups as always.
 
 Thanks to:
   Alan Modra, Alastair D'Silva, Alexey Kardashevskiy, Alistair Popple, Andreas
   Schwab, Andrew Donnellan, Aneesh Kumar K.V, Anju T Sudhakar, Anshuman
   Khandual, Anton Blanchard, Arnd Bergmann, Balbir Singh, Benjamin
   Herrenschmidt, Bhaktipriya Shridhar, Bryant G. Ly, Cédric Le Goater,
   Christophe Leroy, Christophe Lombard, Cyril Bur, David Gibson, Desnes A. Nunes
   do Rosario, Dmitry Torokhov, Frederic Barrat, Geert Uytterhoeven, Guilherme G.
   Piccoli, Gustavo A. R. Silva, Gustavo Romero, Ivan Mikhaylov, Joakim
   Tjernlund, Joe Perches, Josh Poimboeuf, Juan J. Alvarez, Julia Cartwright,
   Kamalesh Babulal, Madhavan Srinivasan, Mahesh Salgaonkar, Mathieu Malaterre,
   Michael Bringmann, Michael Hanselmann, Michael Neuling, Nathan Fontenot,
   Naveen N. Rao, Nicholas Piggin, Paul Mackerras, Philippe Bergheaud, Ram Pai,
   Russell Currey, Santosh Sivaraj, Scott Wood, Seth Forshee, Simon Guo, Stewart
   Smith, Sukadev Bhattiprolu, Thiago Jung Bauermann, Vaibhav Jain, Vasyl
   Gomonovych.
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Merge tag 'powerpc-4.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:
 "Highlights:

   - Enable support for memory protection keys aka "pkeys" on Power7/8/9
     when using the hash table MMU.

   - Extend our interrupt soft masking to support masking PMU interrupts
     as well as "normal" interrupts, and then use that to implement
     local_t for a ~4x speedup vs the current atomics-based
     implementation.

   - A new driver "ocxl" for "Open Coherent Accelerator Processor
     Interface (OpenCAPI)" devices.

   - Support for new device tree properties on PowerVM to describe
     hotpluggable memory and devices.

   - Add support for CLOCK_{REALTIME/MONOTONIC}_COARSE to the 64-bit
     VDSO.

   - Freescale updates from Scott: fixes for CPM GPIO and an FSL PCI
     erratum workaround, plus a minor cleanup patch.

  As well as quite a lot of other changes all over the place, and small
  fixes and cleanups as always.

  Thanks to: Alan Modra, Alastair D'Silva, Alexey Kardashevskiy,
  Alistair Popple, Andreas Schwab, Andrew Donnellan, Aneesh Kumar K.V,
  Anju T Sudhakar, Anshuman Khandual, Anton Blanchard, Arnd Bergmann,
  Balbir Singh, Benjamin Herrenschmidt, Bhaktipriya Shridhar, Bryant G.
  Ly, Cédric Le Goater, Christophe Leroy, Christophe Lombard, Cyril Bur,
  David Gibson, Desnes A. Nunes do Rosario, Dmitry Torokhov, Frederic
  Barrat, Geert Uytterhoeven, Guilherme G. Piccoli, Gustavo A. R. Silva,
  Gustavo Romero, Ivan Mikhaylov, Joakim Tjernlund, Joe Perches, Josh
  Poimboeuf, Juan J. Alvarez, Julia Cartwright, Kamalesh Babulal,
  Madhavan Srinivasan, Mahesh Salgaonkar, Mathieu Malaterre, Michael
  Bringmann, Michael Hanselmann, Michael Neuling, Nathan Fontenot,
  Naveen N. Rao, Nicholas Piggin, Paul Mackerras, Philippe Bergheaud,
  Ram Pai, Russell Currey, Santosh Sivaraj, Scott Wood, Seth Forshee,
  Simon Guo, Stewart Smith, Sukadev Bhattiprolu, Thiago Jung Bauermann,
  Vaibhav Jain, Vasyl Gomonovych"

* tag 'powerpc-4.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (199 commits)
  powerpc/mm/radix: Fix build error when RADIX_MMU=n
  macintosh/ams-input: Use true and false for boolean values
  macintosh: change some data types from int to bool
  powerpc/watchdog: Print the NIP in soft_nmi_interrupt()
  powerpc/watchdog: regs can't be null in soft_nmi_interrupt()
  powerpc/watchdog: Tweak watchdog printks
  powerpc/cell: Remove axonram driver
  rtc-opal: Fix handling of firmware error codes, prevent busy loops
  powerpc/mpc52xx_gpt: make use of raw_spinlock variants
  macintosh/adb: Properly mark continued kernel messages
  powerpc/pseries: Fix cpu hotplug crash with memoryless nodes
  powerpc/numa: Ensure nodes initialized for hotplug
  powerpc/numa: Use ibm,max-associativity-domains to discover possible nodes
  powerpc/kernel: Block interrupts when updating TIDR
  powerpc/powernv/idoa: Remove unnecessary pcidev from pci_dn
  powerpc/mm/nohash: do not flush the entire mm when range is a single page
  powerpc/pseries: Add Initialization of VF Bars
  powerpc/pseries/pci: Associate PEs to VFs in configure SR-IOV
  powerpc/eeh: Add EEH notify resume sysfs
  powerpc/eeh: Add EEH operations to notify resume
  ...
2018-02-02 10:01:04 -08:00
Gustavo A. R. Silva
516c32f64f macintosh/ams-input: Use true and false for boolean values
Assign true or false to boolean variables instead of an integer value.

This issue was detected with the help of Coccinelle

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Michael Hanselmann <public@hansmi.ch>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-01-28 17:21:17 +11:00
Gustavo A. R. Silva
4f256d5614 macintosh: change some data types from int to bool
Change the data type of the following variables from int to bool
across all macintosh drivers:

started
slots_started
pm121_started
wf_smu_started

Some of these issues were detected with the help of Coccinelle.

Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-01-28 17:21:09 +11:00
Andreas Schwab
f2be629568 macintosh/adb: Properly mark continued kernel messages
Use pr_cont where appropriate, and switch to pr_foo throughout.
Additionally, lower messages in adb_probe_task to debug level.

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
[mpe: Clean up whitespace slightly]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-01-27 21:10:22 +11:00
Mathieu Malaterre
00f7b29f6e backlight: Fix old-style function definition
Fix warning:

drivers/macintosh/via-pmu-backlight.c: In function ‘pmu_backlight_init’:
drivers/macintosh/via-pmu-backlight.c:140:13: warning: old-style function definition [-Wold-style-definition]
 void __init pmu_backlight_init()
             ^~~~~~~~~~~~~~~~~~

Signed-off-by: Mathieu Malaterre <malat@debian.org>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-01-21 23:37:44 +11:00
Sinan Kaya
67c8d32692 powerpc/via-pmu: Deprecate pci_get_bus_and_slot()
pci_get_bus_and_slot() is restrictive such that it assumes domain=0 as
where a PCI device is present. This restricts the device drivers to be
reused for other domain numbers.

Getting ready to remove pci_get_bus_and_slot() function in favor of
pci_get_domain_bus_and_slot().

Hard-code the domain number as 0 to match the previous behavior.

Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
Signed-off-by: Bjorn Helgaas <helgaas@kernel.org>
2018-01-17 08:16:46 -06:00
Al Viro
afc9a42b74 the rest of drivers/*: annotate ->poll() instances
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-11-28 11:06:58 -05:00
Linus Torvalds
2bcc673101 Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
 "Yet another big pile of changes:

   - More year 2038 work from Arnd slowly reaching the point where we
     need to think about the syscalls themself.

   - A new timer function which allows to conditionally (re)arm a timer
     only when it's either not running or the new expiry time is sooner
     than the armed expiry time. This allows to use a single timer for
     multiple timeout requirements w/o caring about the first expiry
     time at the call site.

   - A new NMI safe accessor to clock real time for the printk timestamp
     work. Can be used by tracing, perf as well if required.

   - A large number of timer setup conversions from Kees which got
     collected here because either maintainers requested so or they
     simply got ignored. As Kees pointed out already there are a few
     trivial merge conflicts and some redundant commits which was
     unavoidable due to the size of this conversion effort.

   - Avoid a redundant iteration in the timer wheel softirq processing.

   - Provide a mechanism to treat RTC implementations depending on their
     hardware properties, i.e. don't inflict the write at the 0.5
     seconds boundary which originates from the PC CMOS RTC to all RTCs.
     No functional change as drivers need to be updated separately.

   - The usual small updates to core code clocksource drivers. Nothing
     really exciting"

* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (111 commits)
  timers: Add a function to start/reduce a timer
  pstore: Use ktime_get_real_fast_ns() instead of __getnstimeofday()
  timer: Prepare to change all DEFINE_TIMER() callbacks
  netfilter: ipvs: Convert timers to use timer_setup()
  scsi: qla2xxx: Convert timers to use timer_setup()
  block/aoe: discover_timer: Convert timers to use timer_setup()
  ide: Convert timers to use timer_setup()
  drbd: Convert timers to use timer_setup()
  mailbox: Convert timers to use timer_setup()
  crypto: Convert timers to use timer_setup()
  drivers/pcmcia: omap1: Fix error in automated timer conversion
  ARM: footbridge: Fix typo in timer conversion
  drivers/sgi-xp: Convert timers to use timer_setup()
  drivers/pcmcia: Convert timers to use timer_setup()
  drivers/memstick: Convert timers to use timer_setup()
  drivers/macintosh: Convert timers to use timer_setup()
  hwrng/xgene-rng: Convert timers to use timer_setup()
  auxdisplay: Convert timers to use timer_setup()
  sparc/led: Convert timers to use timer_setup()
  mips: ip22/32: Convert timers to use timer_setup()
  ...
2017-11-13 17:56:58 -08:00
Linus Torvalds
9e09d05cfe m68k updates for 4.15
- More printk modernization,
   - Various cleanups and fixes (incl. a race condition) for Mac,
   - Defconfig updates.
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Merge tag 'm68k-for-v4.15-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k

Pull m68k updates from Geert Uytterhoeven:

  - more printk modernization

  - various cleanups and fixes (incl. a race condition) for Mac

  - defconfig updates

* tag 'm68k-for-v4.15-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k/defconfig: Update defconfigs for v4.14-rc7
  m68k/mac: Add mutual exclusion for IOP interrupt polling
  m68k/mac: Disentangle VIA/RBV and NuBus initialization
  m68k/mac: Disentangle VIA and OSS initialization
  m68k/mac: More printk modernization
2017-11-13 12:10:24 -08:00
Finn Thain
92178fcabb m68k/mac: Add mutual exclusion for IOP interrupt polling
The IOP interrupt handler iop_ism_irq() is used by the adb-iop
driver to poll for ADB request completion. Unfortunately, it is not
re-entrant. Fix the race condition by adding an iop_ism_irq_poll()
function with suitable mutual exclusion.

Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2017-11-09 23:02:57 +01:00
Kees Cook
0788f28575 drivers/macintosh: Convert timers to use timer_setup()
In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Kees Cook <keescook@chromium.org>
2017-11-02 15:50:49 -07:00
Greg Kroah-Hartman
b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-02 11:10:55 +01:00
Julia Lawall
de854e54d7 powerpc/macintosh: constify wf_sensor_ops structures
The wf_sensor_ops structures are only stored in the ops field of a
wf_sensor structure, which is declared as const.  Thus the
wf_sensor_ops structures themselves can be const.

Done with the help of Coccinelle.

// <smpl>
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct wf_sensor_ops i@p = { ... };

@ok1@
identifier r.i;
struct wf_sensor s;
position p;
@@
s.ops = &i@p

@ok2@
identifier r.i;
struct wf_sat_sensor s;
position p;
@@
s.sens.ops = &i@p

@bad@
position p != {r.p,ok1.p,ok2.p};
identifier r.i;
struct wf_sensor_ops e;
@@
e@i@p

@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
 struct wf_sensor_ops i = { ... };
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-09-01 16:42:54 +10:00
Rob Herring
b6a945ae03 macintosh: Convert to using %pOF instead of full_name
Now that we have a custom printf format specifier, convert users of
full_name to use %pOF instead. This is preparation to remove storing
of the full path string for each node.

Signed-off-by: Rob Herring <robh@kernel.org>
[mpe: Also convert the two cases inside #if 0]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-09-01 16:42:52 +10:00
Arvind Yadav
516fa8d0e1 macintosh/rack-meter: Make of_device_ids const
of_device_ids are not supposed to change at runtime. All functions
working with of_device_ids provided by <linux/of.h> work with const
of_device_ids. So mark the non-const structs as const.

File size before:
   text	   data	    bss	    dec	    hex	filename
    407	    576	      0	    983	    3d7	drivers/macintosh/rack-meter.o

File size after constify rackmeter_match.
   text	   data	    bss	    dec	    hex	filename
    807	    176	      0	    983	    3d7	drivers/macintosh/rack-meter.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-08-21 17:21:34 +10:00
Bhumika Goyal
1ad35f6e28 drivers/macintosh: Make wf_control_ops and wf_pid_param const
Make wf_control_ops const as they are only stored in the ops field of a
wf_control structure, which is const.
Make wf_pid_param const as they are only used during a copy operation.
Done using Coccinelle.

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-08-14 21:57:56 +10:00
Linus Torvalds
3bad2f1c67 Merge branch 'work.misc-set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull misc user access cleanups from Al Viro:
 "The first pile is assorted getting rid of cargo-culted access_ok(),
  cargo-culted set_fs() and field-by-field copyouts.

  The same description applies to a lot of stuff in other branches -
  this is just the stuff that didn't fit into a more specific topical
  branch"

* 'work.misc-set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  Switch flock copyin/copyout primitives to copy_{from,to}_user()
  fs/fcntl: return -ESRCH in f_setown when pid/pgid can't be found
  fs/fcntl: f_setown, avoid undefined behaviour
  fs/fcntl: f_setown, allow returning error
  lpfc debugfs: get rid of pointless access_ok()
  adb: get rid of pointless access_ok()
  isdn: get rid of pointless access_ok()
  compat statfs: switch to copy_to_user()
  fs/locks: don't mess with the address limit in compat_fcntl64
  nfsd_readlink(): switch to vfs_get_link()
  drbd: ->sendpage() never needed set_fs()
  fs/locks: pass kernel struct flock to fcntl_getlk/setlk
  fs: locks: Fix some troubles at kernel-doc comments
2017-07-05 13:13:32 -07:00
Greg Kroah-Hartman
60bb70aa76 macintosh: use dev_groups and not dev_attrs for bus_type
The dev_attrs field has long been "depreciated" and is finally being
removed, so move the driver to use the "correct" dev_groups field
instead for struct bus_type.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: <linuxppc-dev@lists.ozlabs.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-06-09 11:00:46 +02:00
Al Viro
5a5011936e adb: get rid of pointless access_ok()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-06-04 13:57:24 -04:00
Linus Torvalds
3ef2bc099d DeviceTree for 4.12:
- Fix sparse warnings in drivers/of/.
 
 - Add more overlay unittests.
 
 - Update dtc to v1.4.4-8-g756ffc4f52f6. This adds more checks on dts
 files such as unit-address formatting and stricter character sets for
 node and property names.
 
 - Add a common DT modalias function.
 
 - Move trivial-devices.txt up and out of i2c dir.
 
 - ARM NVIC interrupt controller binding.
 
 - Vendor prefixes for Sensirion, Dioo, Nordic, ROHM.
 
 - Correct some binding file locations.
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Merge tag 'devicetree-for-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull DeviceTree updates from Rob Herring:

 - fix sparse warnings in drivers/of/

 - add more overlay unittests

 - update dtc to v1.4.4-8-g756ffc4f52f6. This adds more checks on dts
   files such as unit-address formatting and stricter character sets for
   node and property names

 - add a common DT modalias function

 - move trivial-devices.txt up and out of i2c dir

 - ARM NVIC interrupt controller binding

 - vendor prefixes for Sensirion, Dioo, Nordic, ROHM

 - correct some binding file locations

* tag 'devicetree-for-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (24 commits)
  of: fix sparse warnings in fdt, irq, reserved mem, and resolver code
  of: fix sparse warning in of_pci_range_parser_one
  of: fix sparse warnings in of_find_next_cache_node
  of/unittest: Missing unlocks on error
  of: fix uninitialized variable warning for overlay test
  of: fix unittest build without CONFIG_OF_OVERLAY
  of: Add unit tests for applying overlays
  of: per-file dtc compiler flags
  fpga: region: add missing DT documentation for config complete timeout
  of: Add vendor prefix for ROHM Semiconductor
  of: fix "/cpus" reference leak in of_numa_parse_cpu_nodes()
  of: Add vendor prefix for Nordic Semiconductor
  dt-bindings: arm,nvic: Binding for ARM NVIC interrupt controller on Cortex-M
  dtc: update warning settings for new bus and node/property name checks
  scripts/dtc: Update to upstream version v1.4.4-8-g756ffc4f52f6
  scripts/dtc: automate getting dtc version and log in update script
  of: Add function for generating a DT modalias with a newline
  of: fix of_device_get_modalias returned length when truncating buffers
  Documentation: devicetree: move trivial-devices out of I2C realm
  dt-bindings: add vendor prefix for Dioo
  ..
2017-05-05 19:33:07 -07:00
Finn Thain
d0c2c269a3 drivers: Clean up duplicated email address
My email address may be found in the git commit logs and in MAINTAINERS.
Remove duplicate addresses so they won't have to be kept up-to-date.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2017-03-24 15:49:56 +01:00
Rob Herring
0634c29589 of: Add function for generating a DT modalias with a newline
The modalias sysfs attr is lacking a newline for DT aliases on platform
devices. The macio and ibmebus correctly add the newline, but open code it.
Introduce a new function, of_device_modalias(), that fills the buffer with
the modalias including the newline and update users of the old
of_device_get_modalias function.

Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: linuxppc-dev@lists.ozlabs.org
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-22 14:56:13 -05:00
Larry Finger
46f401c429 powerpc/pmac: Fix crash in dma-mapping.h with NULL dma_ops
Commit 5657933dbb ("treewide: Move dma_ops from struct dev_archdata
into struct device") introduced a crash for macio devices, an example
backtrace being:

  kernel BUG at ./include/linux/dma-mapping.h:465!
  Oops: Exception in kernel mode, sig: 5 [#1]
  ...
  NIP [c031ddb0] dmam_alloc_coherent+0x74/0x140
  LR [c031de70] dmam_alloc_coherent+0x134/0x140
  Call Trace:
   dmam_alloc_coherent+0x134/0x140 (unreliable)
   pata_macio_port_start+0x3c/0x8c
   ata_host_start.part.5+0xfc/0x208
   ata_host_activate+0x128/0x154
   pata_macio_common_init+0x2f0/0x538
   pata_macio_attach+0xd8/0x180
   macio_device_probe+0x5c/0xec
   driver_probe_device+0x21c/0x314
   __driver_attach+0xcc/0xd0
   bus_for_each_dev+0x68/0xb4
   bus_add_driver+0x1dc/0x244
   driver_register+0x88/0x130
   pata_macio_init+0x5c/0x88
   do_one_initcall+0x40/0x170
   kernel_init_freeable+0x134/0x1d0
   kernel_init+0x18/0x110
   ret_from_kernel_thread+0x5c/0x64

This was caused by the device having NULL dma_ops, triggering the
BUG_ON(). Previously the device inherited its dma_ops via the assignment
to dev->ofdev.dev.archdata. However after commit 5657933dbb the
dma_ops are moved into dev->ofdev.dev, and so they need to be explicitly
copied.

Fixes: 5657933dbb ("treewide: Move dma_ops from struct dev_archdata into struct device")
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Suggested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
[mpe: Rewrite change log, add backtrace]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-03-10 14:17:23 +11:00
Ingo Molnar
174cd4b1e5 sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>
Fix up affected files that include this signal functionality via sched.h.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-02 08:42:32 +01:00