Commit graph

2324 commits

Author SHA1 Message Date
Linus Torvalds
2eb645e7b5 Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6:
  driver core: numa: fix BUILD_BUG_ON for node_read_distance
  driver-core: document ERR_PTR() return values
  kobject: documentation: Update to refer to kset-example.c.
  sysdev: the cpu probe/release attributes should be sysdev_class_attributes
  kobject: documentation: Fix erroneous example in kobject doc.
  driver-core: fix missing kernel-doc in firmware_class
  Driver core: Early platform kernel-doc update
  sysfs: fix sysfs lockdep warning in mlx4 code
  sysfs: fix sysfs lockdep warning in infiniband code
  sysfs: fix sysfs lockdep warning in ipmi code
  sysfs: Initialised pci bus legacy_mem field before use
  sysfs: use sysfs_bin_attr_init in firmware class driver
2010-03-19 13:39:42 -07:00
Greg Kroah-Hartman
21e3bde964 sysfs: fix sysfs lockdep warning in infiniband code
This fixes a sysfs lockdep warning in the infiniband code.

Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-19 07:12:13 -07:00
Linus Torvalds
961cde93de Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (69 commits)
  [SCSI] scsi_transport_fc: Fix synchronization issue while deleting vport
  [SCSI] bfa: Update the driver version to 2.1.2.1.
  [SCSI] bfa: Remove unused header files and did some cleanup.
  [SCSI] bfa: Handle SCSI IO underrun case.
  [SCSI] bfa: FCS and include file changes.
  [SCSI] bfa: Modified the portstats get/clear logic
  [SCSI] bfa: Replace bfa_get_attr() with specific APIs
  [SCSI] bfa: New portlog entries for events (FIP/FLOGI/FDISC/LOGO).
  [SCSI] bfa: Rename pport to fcport in BFA FCS.
  [SCSI] bfa: IOC fixes, check for IOC down condition.
  [SCSI] bfa: In MSIX mode, ignore spurious RME interrupts when FCoE ports are in FW mismatch state.
  [SCSI] bfa: Fix Command Queue (CPE) full condition check and ack CPE interrupt.
  [SCSI] bfa: IOC recovery fix in fcmode.
  [SCSI] bfa: AEN and byte alignment fixes.
  [SCSI] bfa: Introduce a link notification state machine.
  [SCSI] bfa: Added firmware save clear feature for BFA driver.
  [SCSI] bfa: FCS authentication related changes.
  [SCSI] bfa: PCI VPD, FIP and include file changes.
  [SCSI] bfa: Fix to copy fpma MAC when requested by user space application.
  [SCSI] bfa: RPORT state machine: direct attach mode fix.
  ...
2010-03-18 16:54:31 -07:00
Linus Torvalds
122ce878dc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  RDMA/nes: Fix CX4 link problem in back-to-back configuration
  RDMA/nes: Clear stall bit before destroying NIC QP
  RDMA/nes: Set assume_aligned_header bit
  RDMA/cxgb3: Wait at least one schedule cycle during device removal
  IB/mad: Ignore iWARP devices on device removal
  IPoIB: Include return code in trace message for ib_post_send() failures
  IPoIB: Fix TX queue lockup with mixed UD/CM traffic
2010-03-13 14:38:31 -08:00
Linus Torvalds
c32da02342 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (56 commits)
  doc: fix typo in comment explaining rb_tree usage
  Remove fs/ntfs/ChangeLog
  doc: fix console doc typo
  doc: cpuset: Update the cpuset flag file
  Fix of spelling in arch/sparc/kernel/leon_kernel.c no longer needed
  Remove drivers/parport/ChangeLog
  Remove drivers/char/ChangeLog
  doc: typo - Table 1-2 should refer to "status", not "statm"
  tree-wide: fix typos "ass?o[sc]iac?te" -> "associate" in comments
  No need to patch AMD-provided drivers/gpu/drm/radeon/atombios.h
  devres/irq: Fix devm_irq_match comment
  Remove reference to kthread_create_on_cpu
  tree-wide: Assorted spelling fixes
  tree-wide: fix 'lenght' typo in comments and code
  drm/kms: fix spelling in error message
  doc: capitalization and other minor fixes in pnp doc
  devres: typo fix s/dev/devm/
  Remove redundant trailing semicolons from macros
  fix typo "definetly" -> "definitely" in comment
  tree-wide: s/widht/width/g typo in comments
  ...

Fix trivial conflict in Documentation/laptops/00-INDEX
2010-03-12 16:04:50 -08:00
Roland Dreier
0636b33c5f Merge branches 'cxgb3', 'ipoib', 'misc' and 'nes' into for-next 2010-03-12 10:54:20 -08:00
Chien Tung
a72042c08a RDMA/nes: Fix CX4 link problem in back-to-back configuration
Commit 09124e19 ("RDMA/nes: Add support for KR device id 0x0110") took
out too much code and broke CX4 link detection in back-to-back
configuration.  Put back the code that does the link check.

Signed-off-by: Chien Tung <chien.tin.tung@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-03-12 10:54:11 -08:00
Chien Tung
9f29006ae8 RDMA/nes: Clear stall bit before destroying NIC QP
Clear the stall bit to drop any incoming packets while destroying NIC
QP.  This will prevent a chip resource leak.

Signed-off-by: Chien Tung <chien.tin.tung@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-03-11 15:12:15 -08:00
Faisal Latif
883c699241 RDMA/nes: Set assume_aligned_header bit
Set assume_aligned_header bit in QP context as requested by hardware group.

Signed-off-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-03-11 15:11:12 -08:00
Steve Wise
69960a275e RDMA/cxgb3: Wait at least one schedule cycle during device removal
During a hot-plug LLD removal event or an EEH error event, iw_cxgb3
must ensure that any/all threads that might be in a cxgb3 exported
function must return from the function before iw_cxgb3 returns from
its event processing.  Do this by calling synchronize_net().

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-03-11 14:00:35 -08:00
Steve Wise
070e140c4c IB/mad: Ignore iWARP devices on device removal
When an iWARP device is unloaded, the ib_mad module logs errors.  It
should be ignoring iWARP devices on device removal just like it does
on device add.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Acked-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-03-11 14:00:08 -08:00
Or Gerlitz
a48f509b26 IPoIB: Include return code in trace message for ib_post_send() failures
Print the return code of ib_post_send() if it fails to make these
debugging messages more useful.

Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-03-11 13:43:11 -08:00
Eli Cohen
f0dc117abd IPoIB: Fix TX queue lockup with mixed UD/CM traffic
The IPoIB UD QP reports send completions to priv->send_cq, which is
usually left unarmed; it only gets armed when the number of
outstanding send requests reaches the size of the TX queue. This
arming is done only in the send path for the UD QP.  However, when
sending CM packets, the net queue may be stopped for the same reasons
but no measures are taken to recover the UD path from a lockup.

Consider this scenario: a host sends high rate of both CM and UD
packets, with a TX queue length of N.  If at some time the number of
outstanding UD packets is more than N/2 and the overall outstanding
packets is N-1, and CM sends a packet (making the number of
outstanding sends equal N), the TX queue will be stopped.  When all
the CM packets complete, the number of outstanding packets will still
be higher than N/2 so the TX queue will not be restarted.

Fix this by calling ib_req_notify_cq() when the queue is stopped in
the CM path.

Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-03-11 13:37:11 -08:00
Jiri Kosina
318ae2edc3 Merge branch 'for-next' into for-linus
Conflicts:
	Documentation/filesystems/proc.txt
	arch/arm/mach-u300/include/mach/debug-macro.S
	drivers/net/qlge/qlge_ethtool.c
	drivers/net/qlge/qlge_main.c
	drivers/net/typhoon.c
2010-03-08 16:55:37 +01:00
Emese Revfy
52cf25d0ab Driver core: Constify struct sysfs_ops in struct kobj_type
Constify struct sysfs_ops.

This is part of the ops structure constification
effort started by Arjan van de Ven et al.

Benefits of this constification:

 * prevents modification of data that is shared
   (referenced) by many other structure instances
   at runtime

 * detects/prevents accidental (but not intentional)
   modification attempts on archs that enforce
   read-only kernel data at runtime

 * potentially better optimized code as the compiler
   can assume that the const data cannot be changed

 * the compiler/linker move const data into .rodata
   and therefore exclude them from false sharing

Signed-off-by: Emese Revfy <re.emese@gmail.com>
Acked-by: David Teigland <teigland@redhat.com>
Acked-by: Matt Domsch <Matt_Domsch@dell.com>
Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Acked-by: Hans J. Koch <hjk@linutronix.de>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Acked-by: Jens Axboe <jens.axboe@oracle.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-07 17:04:49 -08:00
Andi Kleen
0933e2d98d driver core: Convert some drivers to CLASS_ATTR_STRING
Convert some drivers who export a single string as class attribute
to the new class_attr_string functions. This removes redundant
code all over.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-07 17:04:48 -08:00
Andi Kleen
28812fe11a driver-core: Add attribute argument to class_attribute show/store
Passing the attribute to the low level IO functions allows all kinds
of cleanups, by sharing low level IO code without requiring
an own function for every piece of data.

Also drivers can extend the attributes with own data fields
and use that in the low level function.

This makes the class attributes the same as sysdev_class attributes
and plain attributes.

This will allow further cleanups in drivers.

Full tree sweep converting all users.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-07 17:04:48 -08:00
Akinobu Mita
19b629f581 infiniband: use for_each_set_bit()
Replace open-coded loop with for_each_set_bit().

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Roland Dreier <rolandd@cisco.com>
Cc: Sean Hefty <sean.hefty@intel.com>
Cc: Hal Rosenstock <hal.rosenstock@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-06 11:26:23 -08:00
Linus Torvalds
0f2cc4ecd8 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (52 commits)
  init: Open /dev/console from rootfs
  mqueue: fix typo "failues" -> "failures"
  mqueue: only set error codes if they are really necessary
  mqueue: simplify do_open() error handling
  mqueue: apply mathematics distributivity on mq_bytes calculation
  mqueue: remove unneeded info->messages initialization
  mqueue: fix mq_open() file descriptor leak on user-space processes
  fix race in d_splice_alias()
  set S_DEAD on unlink() and non-directory rename() victims
  vfs: add NOFOLLOW flag to umount(2)
  get rid of ->mnt_parent in tomoyo/realpath
  hppfs can use existing proc_mnt, no need for do_kern_mount() in there
  Mirror MS_KERNMOUNT in ->mnt_flags
  get rid of useless vfsmount_lock use in put_mnt_ns()
  Take vfsmount_lock to fs/internal.h
  get rid of insanity with namespace roots in tomoyo
  take check for new events in namespace (guts of mounts_poll()) to namespace.c
  Don't mess with generic_permission() under ->d_lock in hpfs
  sanitize const/signedness for udf
  nilfs: sanitize const/signedness in dealing with ->d_name.name
  ...

Fix up fairly trivial (famous last words...) conflicts in
drivers/infiniband/core/uverbs_main.c and security/tomoyo/realpath.c
2010-03-04 08:15:33 -08:00
Al Viro
b1e4594ba0 switch infiniband uverbs to anon_inodes
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-03-03 14:07:27 -05:00
Linus Torvalds
3ff1562ea4 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (48 commits)
  IB/srp: Clean up error path in srp_create_target_ib()
  IB/srp: Split send and recieve CQs to reduce number of interrupts
  RDMA/nes: Add support for KR device id 0x0110
  IB/uverbs: Use anon_inodes instead of private infinibandeventfs
  IB/core: Fix and clean up ib_ud_header_init()
  RDMA/cxgb3: Mark RDMA device with CXIO_ERROR_FATAL when removing
  RDMA/cxgb3: Don't allocate the SW queue for user mode CQs
  RDMA/cxgb3: Increase the max CQ depth
  RDMA/cxgb3: Doorbell overflow avoidance and recovery
  IB/core: Pack struct ib_device a little tighter
  IB/ucm: Clean whitespace errors
  IB/ucm: Increase maximum devices supported
  IB/ucm: Use stack variable 'base' in ib_ucm_add_one
  IB/ucm: Use stack variable 'devnum' in ib_ucm_add_one
  IB/umad: Clean whitespace
  IB/umad: Increase maximum devices supported
  IB/umad: Use stack variable 'base' in ib_umad_init_port
  IB/umad: Use stack variable 'devnum' in ib_umad_init_port
  IB/umad: Remove port_table[]
  IB/umad: Convert *cdev to cdev in struct ib_umad_port
  ...
2010-03-03 07:33:17 -08:00
Jayamohan Kallickal
309ce156aa [SCSI] libiscsi: Make iscsi_eh_target_reset start with session reset
The iscsi_eh_target_reset has been modified to attempt
target reset only. If it fails, then iscsi_eh_session_reset
will be called.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 17:39:04 +05:30
Roland Dreier
fe8875e5a4 Merge branch 'misc' into for-next
Conflicts:
	drivers/infiniband/core/uverbs_main.c
2010-03-01 23:52:31 -08:00
Roland Dreier
f57721507f Merge branch 'srp' into for-next 2010-03-01 23:51:57 -08:00
Roland Dreier
3bbddbada8 Merge branch 'nes' into for-next 2010-03-01 23:51:57 -08:00
Roland Dreier
a835fb3095 Merge branch 'mlx4' into for-next 2010-03-01 23:51:56 -08:00
Roland Dreier
5c2187f0a1 Merge branch 'iser' into for-next 2010-03-01 23:51:56 -08:00
Roland Dreier
7f1681622a Merge branch 'ipoib' into for-next 2010-03-01 23:51:56 -08:00
Roland Dreier
85f938a70c Merge branch 'ehca' into for-next 2010-03-01 23:51:55 -08:00
Roland Dreier
216fe702f7 Merge branch 'cxgb3' into for-next 2010-03-01 23:51:55 -08:00
Roland Dreier
da9d2f0730 IB/srp: Clean up error path in srp_create_target_ib()
Instead of repeating the error unwinding steps in each place an error
can be detected, use the common idiom of gotos into an error flow.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-03-01 23:51:39 -08:00
Bart Van Assche
9c03dc9f19 IB/srp: Split send and recieve CQs to reduce number of interrupts
We can reduce the number of IB interrupts from two interrupts per
srp_queuecommand() call to one by using separate CQs for send and
receive completions and processing send completions by polling every
time a TX IU is allocated.

Receive completion events still trigger an interrupt.

Signed-off-by: Bart Van Assche <bart.vanassche@gmail.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-03-01 23:51:38 -08:00
Jiri Pirko
6c74651c3b ipoib: returned back addrlen check for mc addresses
Apparently bogus mc address can break IPOIB multicast processing. Therefore
returning the check for addrlen back until this is resolved in bonding (I don't
see any other point from where mc address with non-dev->addr_len length can came
from).

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 01:34:28 -08:00
Jiri Pirko
fbf219f1c8 infiniband: convert to use netdev_for_each_mc_addr
Due to the loop complexicity in nes_nic.c, I'm using char* to copy mc addresses
to it.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-26 04:22:27 -08:00
Chien Tung
09124e1913 RDMA/nes: Add support for KR device id 0x0110
Add support for KR device id 0x0110.  While at it, cleanup
nes_init_phy() by splitting it into nes_init_1g_phy() and
nes_init_2025_phy().

Remove support for NES_PHY_TYPE_IRIS, which was used on an XFP board
that was only manufactured in small quantities and given out for evals
in even smaller quantities.

Signed-off-by: Chien Tung <chien.tin.tung@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-02-25 10:40:05 -08:00
Roland Dreier
a265e5587f IB/uverbs: Use anon_inodes instead of private infinibandeventfs
The anon_inodes interface has been split to allow creating a bare
(non-installed) file pointer and also extended to allow specifying
O_RDONLY in the flags.  This makes it a suitable replacement for the
private "infinibandeventfs" pseudo-filesystem used by uverbs, and this
replacement saves a small chunk of boilerplate code.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-02-24 16:51:20 -08:00
Eli Cohen
920d706c89 IB/core: Fix and clean up ib_ud_header_init()
ib_ud_header_init() first clears header and then fills up the various
fields.  Later on, it tests header->immediate_present, which it has
already cleared, so the condition is always false.  Fix this by adding
an immediate_present parameter and setting header->immediate_present
as is done with grh_present.  Also remove unused calculation of
header_len.

Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-02-24 14:54:10 -08:00
Steve Wise
68baf495d8 RDMA/cxgb3: Mark RDMA device with CXIO_ERROR_FATAL when removing
If cxgb3 calls the iw_cxgb3 t3cclient remove function due to a device
removal event, then the iwch device must be marked with CXIO_ERROR_FATAL
since the device below us is going away.  Otherwise, we can get stuck in
a deadlock as RDMA ULPs try and deallocate objects (like MRs, QPs, etc).
So always mark the device with CXIO_ERROR_FATAL when removing.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-02-24 10:40:30 -08:00
Steve Wise
5279d3ac2d RDMA/cxgb3: Don't allocate the SW queue for user mode CQs
Only kernel mode CQs need the SW queue memory allocated.  The SW queue
for user mode CQs is allocated in userspace by libcxgb3.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-02-24 10:40:29 -08:00
Steve Wise
9918b28d2b RDMA/cxgb3: Increase the max CQ depth
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-02-24 10:40:29 -08:00
Steve Wise
e998f245c4 RDMA/cxgb3: Doorbell overflow avoidance and recovery
T3 hardware doorbell FIFO overflows can cause application stalls due
to lost doorbell ring events.  This has been seen when running large
NP IMB alltoall MPI jobs.  The T3 hardware supports an xon/xoff-type
flow control mechanism to help avoid overflowing the HW doorbell FIFO.

This patch uses these interrupts to disable RDMA QP doorbell rings
when we near an overflow condition, and then turn them back on (and
ring all the active QP doorbells) when when the doorbell FIFO empties
out.  In addition if an doorbell ring is dropped by the hardware, the
code will now recover.

Design:

cxgb3:
- enable these DB interrupts
- in the interrupt handler, schedule work tasks to call the ULPs event
  handlers with the new events.
- ring all the qset txqs when an overflow is detected.

iw_cxgb3:
- disable db ringing on all active qps when we get the DB_FULL event
- enable db ringing on all active qps and ring all active dbs when we get
  the DB_EMPTY event
- On DB_DROP event:
       - disable db rings in the event handler
       - delay-schedule a work task which rings and enables the dbs on
         all active qps.
- in post_send and post_recv logic, don't ring the db if it's disabled.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-02-24 10:40:28 -08:00
Alexander Chiang
cdb8e43889 IB/ucm: Clean whitespace errors
As shown when 'let c_space_errors=1' is set in vim.

Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-02-24 10:23:48 -08:00
Alexander Chiang
daa913580e IB/ucm: Increase maximum devices supported
Some large systems may support more than IB_UCM_MAX_DEVICES
(currently 32).

This change allows us to support more devices in a backwards-compatible
manner. the first IB_UCM_MAX_DEVICES keep the same major/minor device
numbers they've always had.

If there are more than IB_UCM_MAX_DEVICES, then we dynamically request
a new major device number (new minors start at 0).

Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-02-24 10:23:48 -08:00
Alexander Chiang
31d14b6e10 IB/ucm: Use stack variable 'base' in ib_ucm_add_one
This change is not useful by itself, but sets us up for a future
change that allows us to support more than IB_UCM_MAX_DEVICES.

Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-02-24 10:23:47 -08:00
Alexander Chiang
dd08f702dd IB/ucm: Use stack variable 'devnum' in ib_ucm_add_one
This change is not useful by itself, but sets us up for a future
change that allows us to dynamically allocate device numbers in case
we have more than IB_UCM_MAX_DEVICES in the system.

Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-02-24 10:23:47 -08:00
Alexander Chiang
d3f2c67f2d IB/umad: Clean whitespace
Clean errors as shown when 'let c_space_errors=1' is set in vim.

Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-02-24 10:23:46 -08:00
Alexander Chiang
8698d3fecc IB/umad: Increase maximum devices supported
Some large systems may support more than IB_UMAD_MAX_PORTS
(currently 64).

This change allows us to support more ports in a backwards-compatible
manner.  The first IB_UMAD_MAX_PORTS keep the same major/minor device
numbers they've always had.

If there are more than IB_UMAD_MAX_PORTS, we then dynamically request
a new major device number (new minors start at 0).

Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-02-24 10:23:45 -08:00
Alexander Chiang
dc2ed5e3c9 IB/umad: Use stack variable 'base' in ib_umad_init_port
This change is not useful by itself, but sets us up for a future change
that allows us to support more than IB_UMAD_MAX_PORTS in a system.

Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-02-24 10:23:45 -08:00
Alexander Chiang
d451b8df9f IB/umad: Use stack variable 'devnum' in ib_umad_init_port
This change is not useful by itself, but sets us up for a future
change that allows us to dynamically allocate device numbers in case
we have more than IB_UMAD_MAX_PORTS in the system.

Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-02-24 10:23:44 -08:00
Alexander Chiang
6aa2a86ec4 IB/umad: Remove port_table[]
We no longer need this data structure, as it was used to associate an
inode back to a struct ib_umad_port during ->open().  But now that
we're embedding a struct cdev in struct ib_umad_port, we can use the
container_of() macro to go from the inode back to the device instead.

Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-02-24 10:23:44 -08:00