Commit graph

2391 commits

Author SHA1 Message Date
Christopher Freeman
63f89caad0 dmaengine: increment privatecnt when using dma_get_any_slave_channel
Channels allocated via dma_get_any_slave_channel were not increasing
the counter tracking private allocations.  When these channels were
released, privatecnt may erroneously fall to zero.  The DMA device
would then lose its DMA_PRIVATE cap and fail to allocate future private
channels (via private_candidate) as any allocations still outstanding
would incorrectly be seen as public allocations.

Signed-off-by: Christopher Freeman <cfreeman@nvidia.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-29 16:47:57 +05:30
Jean Delvare
801661467f dmaengine: xgene: Set hardware dependency
The xgene-dma driver is only useful on X-Gene SoC.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Rameshwar Prasad Sahu <rsahu@apm.com>
Cc: Loc Ho <lho@apm.com>
Cc: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-27 08:36:02 +05:30
Geert Uytterhoeven
8ad31bf45d dmaengine: usb-dmac: Protect PM-only functions to kill warning
If CONFIG_PM=n:

    drivers/dma/sh/usb-dmac.c:677: warning: ‘usb_dmac_runtime_suspend’ defined but not used
    drivers/dma/sh/usb-dmac.c:688: warning: ‘usb_dmac_runtime_resume’ defined but not used

Protect the unused functions by #ifdef CONFIG_PM to fix this.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-27 08:36:02 +05:30
Linus Torvalds
d6a4c0e5d3 Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine updates from Vinod Koul:

 - new drivers for:
        - Ingenic JZ4780 controller
        - APM X-Gene controller
        - Freescale RaidEngine device
        - Renesas USB Controller

  - remove device_alloc_chan_resources dummy handlers

  - sh driver cleanups for peri peri and related emmc and asoc patches
    as well

  - fixes and enhancements spread over the drivers

* 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (59 commits)
  dmaengine: dw: don't prompt for DW_DMAC_CORE
  dmaengine: shdmac: avoid unused variable warnings
  dmaengine: fix platform_no_drv_owner.cocci warnings
  dmaengine: pch_dma: fix memory leak on failure path in pch_dma_probe()
  dmaengine: at_xdmac: unlock spin lock before return
  dmaengine: xgene: devm_ioremap() returns NULL on error
  dmaengine: xgene: buffer overflow in xgene_dma_init_channels()
  dmaengine: usb-dmac: Fix dereferencing freed memory 'desc'
  dmaengine: sa11x0: report slave capabilities to upper layers
  dmaengine: vdma: Fix compilation warnings
  dmaengine: fsl_raid: statify fsl_re_chan_probe
  dmaengine: Driver support for FSL RaidEngine device.
  dmaengine: xgene_dma_init_ring_mngr() can be static
  Documentation: dma: Add documentation for the APM X-Gene SoC DMA device DTS binding
  arm64: dts: Add APM X-Gene SoC DMA device and DMA clock DTS nodes
  dmaengine: Add support for APM X-Gene SoC DMA engine driver
  dmaengine: usb-dmac: Add Renesas USB DMA Controller (USB-DMAC) driver
  dmaengine: renesas,usb-dmac: Add device tree bindings documentation
  dmaengine: edma: fixed wrongly initialized data parameter to the edma callback
  dmaengine: ste_dma40: fix implicit conversion
  ...
2015-04-24 09:49:37 -07:00
Vinod Koul
3cfe213756 dmaengine: hsu: don't prompt for hsu_core part
HSU_DMA is selected by the HSU_DMA_PCI driver, this should be user selected
so remove the user prompt for this

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-22 09:28:32 -07:00
Vinod Koul
cdde0e61cf dmaengine: dw: don't prompt for DW_DMAC_CORE
DW_DMAC_CORE is slected by PCI or Platform driver, so this symbol shouldn't
be user selectable, so remove the prompt

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-22 12:24:13 +05:30
Linus Torvalds
41d5e08ea8 TTY/Serial patches for 4.1-rc1
Here's the big tty/serial driver update for 4.1-rc1.
 
 It was delayed for a bit due to some questions surrounding some of the
 console command line parsing changes that are in here.  There's still
 one tiny regression for people who were previously putting multiple
 console command lines and expecting them all to be ignored for some odd
 reason, but Peter is working on fixing that.  If not, I'll send a revert
 for the offending patch, but I have faith that Peter can address it.
 
 Other than the console work here, there's the usual serial driver
 updates and changes, and a buch of 8250 reworks to try to make that
 driver easier to maintain over time, and have it support more devices in
 the future.
 
 All of these have been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial updates from Greg KH:
 "Here's the big tty/serial driver update for 4.1-rc1.

  It was delayed for a bit due to some questions surrounding some of the
  console command line parsing changes that are in here.  There's still
  one tiny regression for people who were previously putting multiple
  console command lines and expecting them all to be ignored for some
  odd reason, but Peter is working on fixing that.  If not, I'll send a
  revert for the offending patch, but I have faith that Peter can
  address it.

  Other than the console work here, there's the usual serial driver
  updates and changes, and a buch of 8250 reworks to try to make that
  driver easier to maintain over time, and have it support more devices
  in the future.

  All of these have been in linux-next for a while"

* tag 'tty-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (119 commits)
  n_gsm: Drop unneeded cast on netdev_priv
  sc16is7xx: expose RTS inversion in RS-485 mode
  serial: 8250_pci: port failed after wakeup from S3
  earlycon: 8250: Document kernel command line options
  earlycon: 8250: Fix command line regression
  earlycon: Fix __earlycon_table stride
  tty: clean up the tty time logic a bit
  serial: 8250_dw: only get the clock rate in one place
  serial: 8250_dw: remove useless ACPI ID check
  dmaengine: hsu: move memory allocation to GFP_NOWAIT
  dmaengine: hsu: remove redundant pieces of code
  serial: 8250_pci: add Intel Tangier support
  dmaengine: hsu: add Intel Tangier PCI ID
  serial: 8250_pci: replace switch-case by formula for Intel MID
  serial: 8250_pci: replace switch-case by formula
  tty: cpm_uart: replace CONFIG_8xx by CONFIG_CPM1
  serial: jsm: some off by one bugs
  serial: xuartps: Fix check in console_setup().
  serial: xuartps: Get rid of register access macros.
  serial: xuartps: Fix iobase use.
  ...
2015-04-21 09:33:10 -07:00
Vinod Koul
b53c758280 Merge branch 'topic/sh' into for-linus 2015-04-21 00:21:14 +05:30
Arnd Bergmann
7d3beab16d dmaengine: shdmac: avoid unused variable warnings
This driver uses '#ifdef CONFIG_ARCH_SHMOBILE' and '#ifdef CONFIG_ARM'
interchangeably in its sh_dmae_probe function, which causes a build
warning when building for ARM without also enabling shmobile:

dma/sh/shdmac.c: In function sh_dmae_probe:
dma/sh/shdmac.c:696:6: warning: unused variable errirq [-Wunused-variable]
dma/sh/shdmac.c:695:16: warning: unused variable irqflags [-Wunused-variable]
dma/sh/shdmac.c: At top level:
dma/sh/shdmac.c:447:20: warning: sh_dmae_err defined but not used [-Wunused-function]

This changes all the #ifdef to test for CONFIG_ARCH_SHMOBILE to
avoid that warning. An earlier patch from Laurent had fixed the warning
for non-ARM case, but it still remained present in ARM randconfig builds.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 52d6a5ee10 ("DMA: shdma: Fix warnings due to declared but unused symbols")
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-17 23:45:06 +05:30
kbuild test robot
11ebe4c067 dmaengine: fix platform_no_drv_owner.cocci warnings
drivers/dma/xgene-dma.c:2079:3-8: No need to set .owner here. The core will do it.

 Remove .owner field if calls are used which set it automatically

Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci

CC: Rameshwar Prasad Sahu <rsahu@apm.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-17 23:43:18 +05:30
Alexey Khoroshilov
12d7b7a236 dmaengine: pch_dma: fix memory leak on failure path in pch_dma_probe()
Memory allocated for pch_dma is not deallocated in case of failure
in pch_dma_probe().

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-17 23:41:46 +05:30
Niklas Cassel
0434a23198 dmaengine: at_xdmac: unlock spin lock before return
Signed-off-by: Niklas Cassel <niklass@axis.com>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-17 23:38:28 +05:30
Dan Carpenter
9c361b1afd dmaengine: xgene: devm_ioremap() returns NULL on error
The code here is checking for IS_ERR() but devm_ioremap() returns NULL
on error and not an error pointer.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-17 23:34:51 +05:30
Dan Carpenter
ed1f041842 dmaengine: xgene: buffer overflow in xgene_dma_init_channels()
We put 9 characters into the 8 character name[] array.  Let's make the
array bigger and change the sprintf() to snprintf().

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-17 23:34:51 +05:30
Yoshihiro Shimoda
d7d8e892aa dmaengine: usb-dmac: Fix dereferencing freed memory 'desc'
This patch fixes an issue that the usb_dmac_desc_free() is
dereferencing freed memory 'desc' because it uses list_for_each_entry().
This function should use list_for_each_entry_safe().

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-17 23:28:48 +05:30
Dmitry Eremin-Solenikov
28591dfdd9 dmaengine: sa11x0: report slave capabilities to upper layers
Fix the following warning by initializing necessary fields in the dma_device
structure.

------------[ cut here ]------------
WARNING: CPU: 0 PID: 1 at drivers/dma/dmaengine.c:863 dma_async_device_register+0x2b4/0x4f0()
this driver doesn't support generic slave capabilities reporting
Modules linked in:
CPU: 0 PID: 1 Comm: swapper Not tainted 4.0.0-rc5+ #10
Hardware name: Sharp-Collie
[<c0105cd8>] (unwind_backtrace) from [<c0103ef8>] (show_stack+0x10/0x14)
[<c0103ef8>] (show_stack) from [<c010e9b8>] (warn_slowpath_common+0x74/0xac)
[<c010e9b8>] (warn_slowpath_common) from [<c010ea20>] (warn_slowpath_fmt+0x30/0x40)
[<c010ea20>] (warn_slowpath_fmt) from [<c02956fc>] (dma_async_device_register+0x2b4/0x4f0)
[<c02956fc>] (dma_async_device_register) from [<c0296a9c>] (sa11x0_dma_probe+0x21c/0x358)
[<c0296a9c>] (sa11x0_dma_probe) from [<c02c52c0>] (platform_drv_probe+0x30/0x94)
[<c02c52c0>] (platform_drv_probe) from [<c02c39bc>] (driver_probe_device+0x84/0x234)
[<c02c39bc>] (driver_probe_device) from [<c02c3c4c>] (__driver_attach+0x98/0x9c)
[<c02c3c4c>] (__driver_attach) from [<c02c1f9c>] (bus_for_each_dev+0x74/0xa4)
[<c02c1f9c>] (bus_for_each_dev) from [<c02c3230>] (bus_add_driver+0x13c/0x1e8)
[<c02c3230>] (bus_add_driver) from [<c02c4260>] (driver_register+0x78/0xf8)
[<c02c4260>] (driver_register) from [<c0100624>] (do_one_initcall+0x84/0x1f4)
[<c0100624>] (do_one_initcall) from [<c0700e1c>] (kernel_init_freeable+0xf8/0x1b4)
[<c0700e1c>] (kernel_init_freeable) from [<c040a920>] (kernel_init+0x8/0xf0)
[<c040a920>] (kernel_init) from [<c01013a8>] (ret_from_fork+0x14/0x2c)
---[ end trace e188b8fe0e782e75 ]---

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-17 23:24:35 +05:30
Linus Torvalds
d0a3997c0c sound updates for 4.1-rc1
There have been major modernization with the standard bus: in ALSA
 sequencer core and HD-audio.  Also, HD-audio receives the regmap
 support replacing the in-house cache register cache code.  These
 changes shouldn't impact the existing behavior, but rather
 refactoring.
 
 In addition, HD-audio got the code split to a core library part and
 the "legacy" driver parts.  This is a preliminary work for adapting
 the upcoming ASoC HD-audio driver, and the whole transition is still
 work in progress, likely finished in 4.1.
 
 Along with them, there are many updates in ASoC area as usual, too:
 lots of cleanups, Intel code shuffling, etc.
 
 Here are some highlights:
 
 ALSA core:
 - PCM: the audio timestamp / wallclock enhancement
 - PCM: fixes in DPCM management
 - Fixes / cleanups of user-space control element management
 - Sequencer: modernization using the standard bus
 
 HD-audio:
 - Modernization using the standard bus
 - Regmap support
 - Use standard runtime PM for codec power saving
 - Widget-path based power-saving for IDT, VIA and Realtek codecs
 - Reorganized sysfs entries for each codec object
 - More Dell headset support
 
 ASoC:
 - Move of jack registration to the card level
 - Lots of ASoC cleanups, mainly moving things from the CODEC level
   to the card level
 - Support for DAPM routes specified by both the machine driver and DT
 - Continuing improvements to rcar
 - pcm512x enhacements
 - Intel platforms updates
 - rt5670 updates / fixes
 - New platforms / devices: some non-DSP Qualcomm platforms, Google's
   Storm platform, Maxmim MAX98925 CODECs and the Ingenic JZ4780 SoC
 
 Misc:
 - ice1724: Improved ESI W192M support
 - emu10k1: Emu 1010 fixes/enhancement
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Merge tag 'sound-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "There have been major modernization with the standard bus: in ALSA
  sequencer core and HD-audio.  Also, HD-audio receives the regmap
  support replacing the in-house cache register cache code.  These
  changes shouldn't impact the existing behavior, but rather
  refactoring.

  In addition, HD-audio got the code split to a core library part and
  the "legacy" driver parts.  This is a preliminary work for adapting
  the upcoming ASoC HD-audio driver, and the whole transition is still
  work in progress, likely finished in 4.1.

  Along with them, there are many updates in ASoC area as usual, too:
  lots of cleanups, Intel code shuffling, etc.

  Here are some highlights:

  ALSA core:
   - PCM: the audio timestamp / wallclock enhancement
   - PCM: fixes in DPCM management
   - Fixes / cleanups of user-space control element management
   - Sequencer: modernization using the standard bus

  HD-audio:
   - Modernization using the standard bus
   - Regmap support
   - Use standard runtime PM for codec power saving
   - Widget-path based power-saving for IDT, VIA and Realtek codecs
   - Reorganized sysfs entries for each codec object
   - More Dell headset support

  ASoC:
   - Move of jack registration to the card level
   - Lots of ASoC cleanups, mainly moving things from the CODEC level to
     the card level
   - Support for DAPM routes specified by both the machine driver and DT
   - Continuing improvements to rcar
   - pcm512x enhacements
   - Intel platforms updates
   - rt5670 updates / fixes
   - New platforms / devices: some non-DSP Qualcomm platforms, Google's
     Storm platform, Maxmim MAX98925 CODECs and the Ingenic JZ4780 SoC

  Misc:
   - ice1724: Improved ESI W192M support
   - emu10k1: Emu 1010 fixes/enhancement"

* tag 'sound-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (411 commits)
  ALSA: hda - set GET bit when adding a vendor verb to the codec regmap
  ALSA: hda/realtek - Enable the ALC292 dock fixup on the Thinkpad T450
  ALSA: hda - Fix another race in runtime PM refcounting
  ALSA: hda - Expose codec type sysfs
  ALSA: ctl: fix to handle several elements added by one operation for userspace element
  ASoC: Intel: fix array_size.cocci warnings
  ASoC: n810: Automatically disconnect non-connected pins
  ASoC: n810: Consistently pass the card DAPM context to n810_ext_control()
  ASoC: davinci-evm: Use card DAPM context to access widgets
  ASoC: mop500_ab8500: Use card DAPM context to access widgets
  ASoC: wm1133-ev1: Use card DAPM context to access widgets
  ASoC: atmel: Improve machine driver compile test coverage
  ASoC: atmel: Add dependency to SND_SOC_I2C_AND_SPI where necessary
  ALSA: control: Fix a typo of SNDRV_CTL_ELEM_ACCESS_TLV_* with SNDRV_CTL_TLV_OP_*
  ALSA: usb-audio: Don't attempt to get Microsoft Lifecam Cinema sample rate
  ASoC: rnsd: fix build regression without CONFIG_OF
  ALSA: emu10k1: add toggles for E-mu 1010 optical ports
  ALSA: ctl: fill identical information to return value when adding userspace elements
  ALSA: ctl: fix a bug to return no identical information in info operation for userspace controls
  ALSA: ctl: confirm to return all identical information in 'activate' event
  ...
2015-04-15 15:41:41 -07:00
Linus Torvalds
b79013b244 Staging driver patches for 4.1-rc1
Here's the big staging driver patchset for 4.1-rc1.
 
 There's a lot of patches here, the Outreachy application period happened
 during this development cycle, so that means that there was a lot of
 cleanup patches accepted.  Other than the normal coding style and sparse
 fixes here, there are some driver updates and work toward making some of
 the drivers into "mergable" shape (like the Unisys drivers.)
 
 All of these have been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging driver updates from Greg KH:
 "Here's the big staging driver patchset for 4.1-rc1.

  There's a lot of patches here, the Outreachy application period
  happened during this development cycle, so that means that there was a
  lot of cleanup patches accepted.  Other than the normal coding style
  and sparse fixes here, there are some driver updates and work toward
  making some of the drivers into "mergable" shape (like the Unisys
  drivers.)

  All of these have been in linux-next for a while"

* tag 'staging-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (1214 commits)
  staging: lustre: orthography & coding style
  staging: lustre: lnet: lnet: fix error return code
  staging: lustre: fix sparse warning
  Revert "Staging: sm750fb: Fix C99 Comments"
  Staging: rtl8192u: use correct array for debug output
  staging: rtl8192e: Remove dead code
  staging: rtl8192e: Comment cleanup (style/format)
  staging: rtl8192e: Fix indentation in rtllib_rx_auth_resp()
  staging: rtl8192e: Decrease nesting of rtllib_rx_auth_resp()
  staging: rtl8192e: Divide rtllib_rx_auth()
  staging: rtl8192e: Fix PRINTK_WITHOUT_KERN_LEVEL warnings
  staging: rtl8192e: Fix DO_WHILE_MACRO_WITH_TRAILING_SEMICOLON warning
  staging: rtl8192e: Fix BRACES warning
  staging: rtl8192e: Fix LINE_CONTINUATIONS warning
  staging: rtl8192e: Fix UNNECESSARY_PARENTHESES warnings
  staging: rtl8192e: remove unused EXPORT_SYMBOL_RSL macro
  staging: rtl8192e: Fix RETURN_VOID warnings
  staging: rtl8192e: Fix UNNECESSARY_ELSE warning
  staging: rtl8723au: Remove unneeded comments
  staging: rtl8723au: Use __func__ in trace logs
  ...
2015-04-13 17:37:33 -07:00
Linus Torvalds
0055dc5b23 spi: Updates for v4.1
Only one framework update this time around, a change from Lars-Peter to
 move full to pm_ops and remove the legacy bus PM ops.  Otherwise it's
 all driver updates:
 
  - Make the spidev driver complain loudly if registered as spidev with
    DT rather than with a compatible string, hopefully helping people
    avoid making that mistake.
  - Error handling and robustness fixes for the Designware and Intel MID
    drivers from Andy Shevchenko.
  - Substantial performance improvements for the Raspberry Pi driver from
    Martin Sperl.
  - Several new features for spidev_test from Adrian Remonda and Ian
    Abbott.
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Merge tag 'spi-v4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "Only one framework update this time around, a change from Lars-Peter
  to move full to pm_ops and remove the legacy bus PM ops.  Otherwise
  it's all driver updates:

   - make the spidev driver complain loudly if registered as spidev with
     DT rather than with a compatible string, hopefully helping people
     avoid making that mistake.

   - error handling and robustness fixes for the Designware and Intel
     MID drivers from Andy Shevchenko.

   - substantial performance improvements for the Raspberry Pi driver
     from Martin Sperl.

   - several new features for spidev_test from Adrian Remonda and Ian
     Abbott"

* tag 'spi-v4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (75 commits)
  spi: bcm2835: enabling polling mode for transfers shorter than 30us
  spi: bcm2835: transform native-cs to gpio-cs on first spi_setup
  spi: img-spfi: Control CS lines with GPIO
  spi: img-spfi: Reset controller after each message
  spi: img-spfi: Implement a handle_err() callback
  spi: img-spfi: Setup TRANSACTION register before CONTROL register
  spi: Make master->handle_err() callback optional to avoid crashes
  spi: img-spfi: Limit bit clock to 1/4th of input clock
  spi: img-spfi: Implement a prepare_message() callback
  spi: fsl-dspi: Add ~50ns delay between cs and sck
  spi: fsl-dspi: Add cs-sck delays
  spi: fsl-dspi: Fix clock rate scale values
  spi: signedness bug in qspi_trigger_transfer_out_int()
  spi: imx: read back the RX/TX watermark levels earlier
  spi: spi-bfin5xx: Initialize cr_width in bfin_spi_pump_transfers()
  spi: bitbang: only toggle bitchanges
  spi: pxa2xx: missing break in pxa2xx_ssp_get_clk_div()
  spi: fsl-dspi: Fix clock rate scale values
  spi: Using Trigger number to transmit/receive data
  spi: bcm2835: fill FIFO before enabling interrupts to reduce interrupts/message
  ...
2015-04-13 15:05:40 -07:00
Mark Brown
b7af54a992 Merge remote-tracking branches 'asoc/topic/dmaengine', 'asoc/topic/fsi', 'asoc/topic/fsl' and 'asoc/topic/fsl-ssi' into asoc-next 2015-04-12 19:48:59 +01:00
Mark Brown
431959c079 Merge remote-tracking branches 'spi/topic/blackfin', 'spi/topic/cadence', 'spi/topic/dw' and 'spi/topic/err' into spi-next 2015-04-11 23:09:09 +01:00
Linus Torvalds
12522eeac8 Revert "dmaengine: Add a warning for drivers not using the generic slave caps retrieval"
This reverts commit ecc19d1786.

It added a new warning to try to encourage driver writers to set the
device capabities properly, but drivers haven't been updated and in the
meantime it just generaters a scary message that users cannot actually
do anything about.

Warnings like these are appropriate if you actually expect to fix the
code that causes them.  They are not appropriate for releases.

Requested-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-11 13:46:07 -07:00
Felipe Balbi
ffeb13aab6 dmaengine: cppi41: add missing bitfields
Add missing directions, residue_granularity,
srd_addr_widths and dst_addr_widths bitfields.

Without those we will see a kernel WARN()
when loading musb on am335x devices.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-11 21:12:58 +05:30
Greg Kroah-Hartman
b3e3bf2ef2 Merge 4.0-rc7 into tty-next
We want the fixes in here as well, also to help out with merge issues.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-04-07 11:07:20 +02:00
Greg Kroah-Hartman
c610f7f772 Merge 4.0-rc7 into staging-next
We want those fixes (iio primarily) into the -next branch to help with
merge and testing issues.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-04-07 11:03:02 +02:00
Vinod Koul
453dcdb5ba dmaengine: fsl_raid: statify fsl_re_chan_probe
Function fsl_re_chan_probe should be declared static, so do it

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-02 16:11:35 +05:30
Xuelin Shi
ad80da658b dmaengine: Driver support for FSL RaidEngine device.
The RaidEngine is a new FSL hardware used for Raid5/6 acceration.
This patch enables the RaidEngine functionality and provides
hardware offloading capability for memcpy, xor and pq computation.
It works with async_tx.

Signed-off-by: Harninder Rai <harninder.rai@freescale.com>
Signed-off-by: Xuelin Shi <xuelin.shi@freescale.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-02 16:10:27 +05:30
kbuild test robot
a3f92e8ebe dmaengine: xgene_dma_init_ring_mngr() can be static
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-02 15:57:46 +05:30
Rameshwar Prasad Sahu
9f2fd0dfa5 dmaengine: Add support for APM X-Gene SoC DMA engine driver
This patch implements the APM X-Gene SoC DMA engine driver. The APM X-Gene
SoC DMA engine consists of 4 DMA channels for performing DMA operations.
These DMA operations include memory copy, scatter-gather memory copy,
raid5 xor, and raid6 p+q offloading.

Signed-off-by: Rameshwar Prasad Sahu <rsahu@apm.com>
Signed-off-by: Loc Ho <lho@apm.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-02 14:04:48 +05:30
Yoshihiro Shimoda
0c1c8ff32f dmaengine: usb-dmac: Add Renesas USB DMA Controller (USB-DMAC) driver
This DMAC is Renesas USB high-speed module DMA controller that
supports slave transfer.

This USB-DMAC has similar register sets with R-Car Gen2 DMAC, but
the USB-DMAC has specific registers to control the USB transactions.
If this code is added into the rcar-dmac driver, it will become
unreadable. So, this driver is independent from the rcar-dmac.

And, this USB-DMAC uses virt-dma infrastructure.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-02 12:57:32 +05:30
Petr Kulhavy
ab7add30ce dmaengine: edma: fixed wrongly initialized data parameter to the edma callback
The "data" parameter passed indirectly to the edma_callback() should be
edma_chan and not the dma_chan.

This bug was so far harmless since the offset of struct dma_chan within struct
edma_chan is 0. However as soon as someone changes struct edma_chan this would
cause troubles.

Signed-off-by: Petr Kulhavy <petr@barix.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-01 09:15:57 +05:30
Stefan Agner
de6b641e2d dmaengine: ste_dma40: fix implicit conversion
The function d40_prep_sg takes the type enum dma_transfer_direction
as second last parameter. However, the memcpy calls pass DMA_NONE
which is of type enum dma_data_direction. Fix this by passing the
actual transfer direction DMA_MEM_TO_MEM.

This does not change the actual code flow since only the transfer
direction DMA_MEM_TO_DEV and DMA_DEV_TO_MEM are actually used in the
function d40_prep_sg.

Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-01 09:10:22 +05:30
Alex Smith
d894fc6046 dmaengine: jz4780: add driver for the Ingenic JZ4780 DMA controller
This patch adds a driver for the DMA controller found in the Ingenic
JZ4780.

It currently does not implement any support for the programmable firmware
feature of the controller - this is not necessary for most uses. It also
does not take priority into account when allocating channels, it just
allocates the first available channel. This can be implemented later.

Signed-off-by: Alex Smith <alex.smith@imgtec.com>
Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
[Updated for dmaengine api changes, Add residue support, couple of minor fixes]
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-01 08:43:49 +05:30
Peter Ujfalusi
fbef403aa7 dmaengine: moxart-dma: Fix memory leak when stopping a running transfer
The vd->node is removed from the lists when the transfer started so the
vchan_get_all_descriptors() will not find it. This results memory leak.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-30 23:17:08 +05:30
Peter Ujfalusi
f931782917 dmaengine: bcm2835-dma: Fix memory leak when stopping a running transfer
The vd->node is removed from the lists when the transfer started so the
vchan_get_all_descriptors() will not find it. This results memory leak.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-30 23:17:08 +05:30
Peter Ujfalusi
02d88b735f dmaengine: omap-dma: Fix memory leak when terminating running transfer
In omap_dma_start_desc the vdesc->node is removed from the virt-dma
framework managed lists (to be precise from the desc_issued list).
If a terminate_all comes before the transfer finishes the omap_desc will
not be freed up because it is not in any of the lists and we stopped the
DMA channel so the transfer will not going to complete.
There is no special sequence for leaking memory when using cyclic (audio)
transfer: with every start and stop of a cyclic transfer the driver leaks
struct omap_desc worth of memory.

Free up the allocated memory directly in omap_dma_terminate_all() since the
framework will not going to do that for us.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
CC: <stable@vger.kernel.org>
CC: <linux-omap@vger.kernel.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-30 23:17:08 +05:30
Petr Kulhavy
5ca9e7ce6e dmaengine: edma: fix memory leak when terminating running transfers
If edma_terminate_all() was called while a transfer was running (i.e. after
edma_execute() but before edma_callback()) the echan->edesc was not freed.

This was due to the fact that a running transfer is on none of the
vchan lists: desc_submitted, desc_issued, desc_completed (edma_execute()
removes it from the desc_issued list), so the vchan_dma_desc_free_list()
called at the end of edma_terminate_all() didn't find it and didn't free it.

This bug was found on an AM1808 based hardware (very similar to da850evm,
however using the second MMC/SD controller), where intense operations on the SD
card wasted the device 128MB RAM within a couple of days.

Peter Ujfalusi:
The issue is even more severe since it affects cyclic (audio) transfers as
well. In this case starting/stopping audio will results memory leak.

Signed-off-by: Petr Kulhavy <petr@barix.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
CC: <stable@vger.kernel.org>
CC: <linux-omap@vger.kernel.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-30 23:17:08 +05:30
Lars-Peter Clausen
ca76683930 dmaengine: jz4740: Define capabilities
Setup the capabilities of the device/driver, so that users of the DMAengine API
can query them.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-30 23:00:23 +05:30
Andy Shevchenko
ad53b26cd1 dmaengine: hsu: move memory allocation to GFP_NOWAIT
The GFP_ATOMIC is too strict, and DMAEngine documentation make an advice to use
GFP_NOWAIT. This patch does the conversion.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-26 23:02:49 +01:00
Andy Shevchenko
4bb82458ec dmaengine: hsu: remove redundant pieces of code
There are few places where the implemented pieces of code are not needed, i.e.:
- direction can't be wrong in hsu_dma_chan_start()
- desc->active set to 0 by kzalloc
- DMAEngine is NULL-aware when call ->device_alloc_chan_resources()

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-26 23:02:48 +01:00
Andy Shevchenko
594eb4a4be dmaengine: hsu: add Intel Tangier PCI ID
Intel Tangier is known to have the HSU DMA IP as PCI device 00:05.0. The patch
adds the ID as found on Intel Edison board to the PCI device table.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-26 23:01:37 +01:00
Greg Kroah-Hartman
caa445d808 Merge 4.0-rc5 into tty-next
We want the tty/serial fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-23 21:45:24 +01:00
Greg Kroah-Hartman
807dc0668e Merge 4.0-rc5 into staging-testing
We want the staging tree fixes that are upstream here as well to prevent
merge conflicts from people trying to clean up code.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-23 21:36:48 +01:00
Vinod Koul
381a3c4a33 Merge branch 'topic/alloc_removal' into for-linus 2015-03-18 22:46:19 +05:30
Vinod Koul
2fcb9e3c86 dmaengine: sun6i: remove device_alloc_chan_resources handler
Now that device_alloc_chan_resources handler in not mandatory, remove dummy
implementations

Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-18 22:45:52 +05:30
Vinod Koul
7595c5717f dmaengine: sa11x0: remove device_alloc_chan_resources handler
Now that device_alloc_chan_resources handler in not mandatory, remove dummy
implementations

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-18 22:45:49 +05:30
Vinod Koul
b07064aa08 dmaengine: s3c24xx: remove device_alloc_chan_resources handler
Now that device_alloc_chan_resources handler in not mandatory, remove dummy
implementations

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-18 22:45:36 +05:30
Vinod Koul
c509c495c0 dmaengine: k3dma: remove device_alloc_chan_resources handler
Now that device_alloc_chan_resources handler in not mandatory, remove dummy
implementations

Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-18 22:45:11 +05:30
Vinod Koul
f265958a6b dmaengine: img-mdc: remove device_alloc_chan_resources handler
Now that device_alloc_chan_resources handler in not mandatory, remove dummy
implementations

Acked-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-18 22:44:58 +05:30
Vinod Koul
3d32b2506d dmaengine: jz4740: remove device_alloc_chan_resources handler
Now that device_alloc_chan_resources handler in not mandatory, remove dummy
implementations

Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-18 22:44:43 +05:30