Commit graph

310511 commits

Author SHA1 Message Date
Randy Dunlap
491d9e2a5f watchdog: ie6xx_wdt needs io.h
Fix build error by including <linux/io.h>:

drivers/watchdog/ie6xx_wdt.c:97:2: error: implicit declaration of function 'outb'
drivers/watchdog/ie6xx_wdt.c:133:2: error: implicit declaration of function 'outl'
drivers/watchdog/ie6xx_wdt.c:161:2: error: implicit declaration of function 'inb'
drivers/watchdog/ie6xx_wdt.c:199:3: error: implicit declaration of function 'inl'
drivers/watchdog/ie6xx_wdt.c:203:3: error: implicit declaration of function 'inw'

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-05-23 16:25:33 +02:00
Randy Dunlap
744f6f4d3d watchdog: ie6xx_wdt.c: fix printk format warning
Fix printk format warning; use cast to u64 since resource_size_t can
be either u32 or u64.

drivers/watchdog/ie6xx_wdt.c:261:4: warning: format '%x' expects type 'unsigned int', but argument 3 has type 'resource_size_t'

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-05-23 16:25:29 +02:00
Alexander Stein
101ce87b3b watchdog: Add watchdog driver for Intel Atom E6XX
Add driver for the watchdog timer built into the
Intel Atom E6XX (TunnelCreek) processor.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-05-23 16:25:13 +02:00
Diego Elio Pettenò
198ca01534 watchdog: it87_wdt: Add support for IT8728F watchdog.
This works the same way IT8721F works, but it supports WDT_PWROK
(checked on the datasheet).

Signed-off-by: Diego Elio Pettenò <flameeyes@flameeyes.eu>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-05-23 16:24:43 +02:00
Michael Olbrich
7050bd5499 watchdog: i6300esb: don't depend on X86
i6300esb is on of the watchdogs QEMU can emulate. It is also available
when emulating ARM. The driver works without problems and is quite
useful to test userspace dealing with /dev/watchdog.

Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-05-23 16:24:32 +02:00
Samuel Ortiz
ca2cad6ae3 mfd: Fix twl6040 build failure
Without it we get:

 CC      drivers/mfd/twl6040-core.o
drivers/mfd/twl6040-core.c: In function ‘twl6040_has_vibra’:
drivers/mfd/twl6040-core.c:55:2: error: implicit declaration of function
‘of_find_node_by_name’ [-Werror=implicit-function-declaration]

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-05-23 16:24:14 +02:00
Wim Van Sebroeck
5ce9c371c7 watchdog: Use module_pci_driver
This patch converts the PCI watchdog drivers so that they use the
module_pci_driver() macro. This makes the code smaller and simpler.

Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Cc: Thomas Mingarelli <thomas.mingarelli@hp.com>
Cc: Marc Vertes <marc.vertes@sigfox.com>
2012-05-23 16:23:53 +02:00
Jesper Juhl
11c38b7575 ktest: Change singular "paranthesis" to plural "parentheses"
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2012-05-23 10:19:09 -04:00
Dave Mueller
8f90a3ae8f watchdog: sch311x_wdt.c: Remove RESGEN
The SCH311x chip contains 2 watchdogs. One is the watchdog programmable
by the runtime register at address 0x65-0x68, the other is the watchdog
inside the power on reset generator. This second watchdog has a fixed
timeout value of ~1.6 seconds and is configurable only by the RESGEN
register.

The BIOS normally takes care of the RESGEN watchdog and disables it (at
least) before the OS is booted.

Unfortunately the sch311x_wdt driver clears bit 0 of the RESGEN register
which has the effect that at the latest 1.6 seconds later, a POR is
triggered.

The attached patch fixes this problem by completely removing any
reference to the RESGEN watchdog from the sch311x_wdt driver.

Signed-off-by: Dave Mueller <d.mueller@elsoft.ch>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-05-23 16:17:51 +02:00
Wim Van Sebroeck
3016a552a8 watchdog: s3c2410-wdt: Use of_match_ptr().
Use of_match_ptr definition for the of_match_table.

Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
2012-05-23 16:17:14 +02:00
Roland Stigge
3ba3774b8c watchdog: Device tree support for pnx4008-wdt
This patch adds device tree support to pnx4008-wdt.c

Signed-off-by: Roland Stigge <stigge@antcom.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-05-23 16:16:55 +02:00
Julia Lawall
ae21cc20a6 watchdog: ar7_wdt.c: use devm_request_and_ioremap
Combine request_region and ioremap into devm_request_and_ioremap.  This has
the effect of fixing a missing iounmap on the failure of clk_get.

This also introduces a call to clk_put and clears the vbus_clk variable in
the case of failure or device removal.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-05-23 16:16:43 +02:00
Rob Herring
065e823830 watchdog: remove ixp2000 driver
The platform is removed, so there are no users of this driver.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-05-23 16:16:28 +02:00
H Hartley Sweeten
62a9aebc5b watchdog: sp5100_tco.c: quiet sparse noise about using plain integer was NULL pointer
Pointers should not be compared to plain integers.
Quiets the sparse warning:
warning: Using plain integer as NULL pointer

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-05-23 16:16:21 +02:00
Dave Airlie
41ceeeb25d drm/nouveau/radeon: add static const to the dma-buf ops.
Reported-by: wfg@linux.intel.com
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-05-23 14:10:27 +01:00
Dave Airlie
6a101cb209 drm/i915: make some dmabuf things static
these functions and the table can all be static/static const.

Reported-by: wfg@linux.intel.com
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-05-23 14:09:32 +01:00
Dave Airlie
5288b7b205 drm: update ast/cirrus/mgag200 for change in TTM api
New drivers merged after changes were done in prime TTM code.

Fix build.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-05-23 14:08:41 +01:00
David Howells
ef26a5a6ea Guard check in module loader against integer overflow
The check:

	if (len < hdr->e_shoff + hdr->e_shnum * sizeof(Elf_Shdr))

may not work if there's an overflow in the right-hand side of the condition.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2012-05-23 22:28:53 +09:30
Greg Kroah-Hartman
3c7ec94d2c modpost: use proper kernel style for autogenerated files
If the kernel build process is creating files automatically, the least
it can do is create them in a properly formatted manner.  Sure, it's a
minor issue, but being consistent is nice.

Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Alessio Igor Bogani <abogani@kernel.org>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Ben Hutchings <ben@decadent.org.uk>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2012-05-23 22:28:51 +09:30
Jesper Juhl
eb3d5cc67a modpost: Stop grab_file() from leaking filedescriptors if fstat() fails
In case the open() call succeeds but the subsequent fstat() call
fails, then we'll return without close()'ing the filedescriptor.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2012-05-23 22:28:49 +09:30
Samuel Ortiz
78302a194c mfd: Fix max77693 build failure
Without it we get:

drivers/mfd/max77693.c: In function ‘max77693_i2c_probe’:
drivers/mfd/max77693.c:157:2: error: implicit declaration of function
‘max77693_irq_init’ [-Werror=implicit-function-declaration]
drivers/mfd/max77693.c: In function ‘max77693_resume’:
drivers/mfd/max77693.c:215:2: error: implicit declaration of function
‘max77693_irq_resume’ [-Werror=implicit-function-declaration]
drivers/mfd/max77693-irq.c: In function ‘max77693_irq_lock’:
drivers/mfd/max77693-irq.c:104:2: error: ‘struct max77693_dev’ has no member
named ‘irqlock’
drivers/mfd/max77693-irq.c: In function ‘max77693_irq_sync_unlock’:
drivers/mfd/max77693-irq.c:119:11: error: ‘struct max77693_dev’ has no member
named ‘irq_masks_cache’
drivers/mfd/max77693-irq.c:119:42: error: ‘struct max77693_dev’ has no member
named ‘irq_masks_cur’
drivers/mfd/max77693-irq.c:122:13: error: ‘struct max77693_dev’ has no member
named ‘irq_masks_cur’
drivers/mfd/max77693-irq.c:125:24: error: ‘struct max77693_dev’ has no member
named ‘irqlock’
drivers/mfd/max77693-irq.c: In function ‘max77693_irq_mask’:
drivers/mfd/max77693-irq.c:141:11: error: ‘struct max77693_dev’ has no member
named ‘irq_masks_cur’
drivers/mfd/max77693-irq.c:143:11: error: ‘struct max77693_dev’ has no member
named ‘irq_masks_cur’
drivers/mfd/max77693-irq.c: In function ‘max77693_irq_unmask’:
drivers/mfd/max77693-irq.c:153:11: error: ‘struct max77693_dev’ has no member
named ‘irq_masks_cur’
drivers/mfd/max77693-irq.c:155:11: error: ‘struct max77693_dev’ has no member
named ‘irq_masks_cur’
drivers/mfd/max77693-irq.c: In function ‘max77693_irq_thread’:
drivers/mfd/max77693-irq.c:209:26: error: ‘struct max77693_dev’ has no member
named ‘irq_masks_cur’
drivers/mfd/max77693-irq.c:211:27: error: ‘struct max77693_dev’ has no member
named ‘irq_masks_cur’
drivers/mfd/max77693-irq.c:217:39: error: ‘struct max77693_dev’ has no member
named ‘irq_domain’
drivers/mfd/max77693-irq.c: In function ‘max77693_irq_init’:
drivers/mfd/max77693-irq.c:260:2: error: ‘struct max77693_dev’ has no member
named ‘irqlock’
drivers/mfd/max77693-irq.c:268:12: error: ‘struct max77693_dev’ has no member
named ‘irq_masks_cur’
drivers/mfd/max77693-irq.c:269:12: error: ‘struct max77693_dev’ has no member
named ‘irq_masks_cache’
drivers/mfd/max77693-irq.c:271:12: error: ‘struct max77693_dev’ has no member
named ‘irq_masks_cur’
drivers/mfd/max77693-irq.c:272:12: error: ‘struct max77693_dev’ has no member
named ‘irq_masks_cache’
drivers/mfd/max77693-irq.c:292:10: error: ‘struct max77693_dev’ has no member
named ‘irq_domain’

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-05-23 13:32:20 +02:00
Tejun Heo
ff26eaadf4 blkcg: tg_stats_alloc_lock is an irq lock
tg_stats_alloc_lock nests inside queue lock and should always be held
with irq disabled.  throtl_pd_{init|exit}() were using non-irqsafe
spinlock ops which triggered inverse lock ordering via irq warning via
RCU freeing of blkg invoking throtl_pd_exit() w/o disabling IRQ.

Update both functions to use irq safe operations.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Sasha Levin <sasha.levin@oracle.com>
LKML-Reference: <1335339396.16988.80.camel@lappy>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-05-23 12:16:21 +02:00
Lee Jones
21f082a661 mfd: ab8500-core should depend on MFD_DB8500_PRCMU
A recent move to eliminate excess historical baggage from ab8500 core
code resulting in errors when building with x86_64 allmodconfig:

In file included from drivers/mfd/ab8500-core.c:21:0:
include/linux/mfd/dbx500-prcmu.h:614:19: error: redefinition of 'prcmu_abb_read'
include/linux/mfd/db8500-prcmu.h:673:19: note: previous definition of 'prcmu_abb_read' was here
include/linux/mfd/dbx500-prcmu.h:619:19: error: redefinition of 'prcmu_abb_write'
include/linux/mfd/db8500-prcmu.h:678:19: note: previous definition of 'prcmu_abb_write' was here
include/linux/mfd/dbx500-prcmu.h:630:19: error: redefinition of 'prcmu_config_clkout'
include/linux/mfd/db8500-prcmu.h:643:19: note: previous definition of 'prcmu_config_clkout' was here
include/linux/mfd/dbx500-prcmu.h:692:20: error: redefinition of 'prcmu_ac_wake_req'
include/linux/mfd/db8500-prcmu.h:683:20: note: previous definition of 'prcmu_ac_wake_req' was here
include/linux/mfd/dbx500-prcmu.h:694:20: error: redefinition of 'prcmu_ac_sleep_req'
include/linux/mfd/db8500-prcmu.h:685:20: note: previous definition of 'prcmu_ac_sleep_req' was here

Problem:
When CONFIG_AB8500_CORE is set, building ab8500-core.c and
!(CONFIG_UX500_SOC_DB8500 | CONFIG_MFD_DB8500_PRCMU), both db8500-prcmu.h
and dbx500-prcmu.h take it upon themselves to _both_ create 'return 0'
inline functions for the following:

prcmu_abb_read()
prcmu_abb_write()
prcmu_config_clkout()
prcmu_ac_wake_req()
prcmu_ac_sleep_req()

Solution:
Depend on MFD_DB8500_PRCMU, which in turn depends on UX500_SOC_DB8500.

Reported-By: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-05-23 12:04:09 +02:00
Dave Airlie
5b2ba70091 Merge branch 'prime-merge' of ssh://people.freedesktop.org/~airlied/linux into drm-core-next
* 'prime-merge' of ssh://people.freedesktop.org/~airlied/linux:
  drm/radeon: add PRIME support (v2)
  i915: add dmabuf/prime buffer sharing support.
  nouveau: add PRIME support
  ttm: add prime sharing support to TTM (v2)
  udl: add prime fd->handle support.
  drm/prime: add exported buffers to current fprivs imported buffer list (v2)
  drm/prime: introduce sg->pages/addr arrays helper
2012-05-23 10:46:24 +01:00
Alex Deucher
40f5cf9969 drm/radeon: add PRIME support (v2)
This adds prime->fd and fd->prime support to radeon.
It passes the sg object to ttm and then populates
the gart entries using it.

Compile tested only.

v2: stub kmap + use new helpers + add reimporting

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-05-23 10:47:11 +01:00
Daniel Vetter
1286ff7397 i915: add dmabuf/prime buffer sharing support.
This adds handle->fd and fd->handle support to i915, this is to allow
for offloading of rendering in one direction and outputs in the other.

v2 from Daniel Vetter:
- fixup conflicts with the prepare/finish gtt prep work.
- implement ppgtt binding support.

Note that we have squat i-g-t testcoverage for any of the lifetime and
access rules dma_buf/prime support brings along. And there are quite a
few intricate situations here.

Also note that the integration with the existing code is a bit
hackish, especially around get_gtt_pages and put_gtt_pages. It imo
would be easier with the prep code from Chris Wilson's unbound series,
but that is for 3.6.

Also note that I didn't bother to put the new prepare/finish gtt hooks
to good use by moving the dma_buf_map/unmap_attachment calls in there
(like we've originally planned for).

Last but not least this patch is only compile-tested, but I've changed
very little compared to Dave Airlie's version. So there's a decent
chance v2 on drm-next works as well as v1 on 3.4-rc.

v3: Right when I've hit sent I've noticed that I've screwed up one
obj->sg_list (for dmar support) and obj->sg_table (for prime support)
disdinction. We should be able to merge these 2 paths, but that's
material for another patch.

v4: fix the error reporting bugs pointed out by ickle.

v5: fix another error, and stop non-gtt mmaps on shared objects
stop pread/pwrite on imported objects, add fake kmap

Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-05-23 10:47:10 +01:00
Dave Airlie
22b33e8ed0 nouveau: add PRIME support
This adds prime->fd and fd->prime support to nouveau,
it passes the SG object to TTM, and then populates the
GART entries using it.

v2: add stubbed kmap + use new function to fill out pages array
for faulting + add reimport test.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-05-23 10:46:55 +01:00
Dave Airlie
129b78bfca ttm: add prime sharing support to TTM (v2)
This adds the ability for ttm common code to take an SG table
and use it as the backing for a slave TTM object.

The drivers can then populate their GTT tables using the SG object.

v2: make sure to setup VM for sg bos as well.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-05-23 10:46:27 +01:00
Dave Airlie
96503f592f udl: add prime fd->handle support.
udl can only be used as an output offload so doesn't need to support
handle->fd direction.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-05-23 10:46:05 +01:00
Dave Airlie
0ff926c7d4 drm/prime: add exported buffers to current fprivs imported buffer list (v2)
If userspace attempts to import a buffer it exported on the same device,
we need to return the same GEM handle for it, not a new handle pointing
at the same GEM object.

v2: move removals into a single fn, no need to set to NULL. (Chris Wilson)

Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-05-23 10:46:03 +01:00
Dave Airlie
51ab7ba267 drm/prime: introduce sg->pages/addr arrays helper
the ttm drivers need this currently, in order to get fault handling
working and efficient.

It also allows addrs to be NULL for devices like udl.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-05-23 10:45:57 +01:00
Mark Brown
18d5eacb52 regmap: Use select .. if to get IRQ_DOMAIN enabled
Ensure that we can't get randconfig breakage by doing the IRQ_DOMAIN
select automatically. Don't just do the select from REGMAP_IRQ to ensure
that the select actually gets noticed.

Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-23 10:15:51 +01:00
Robert Love
8d55e507d2 [SCSI] fcoe, bnx2fc, libfcoe: SW FCoE and bnx2fc use FCoE Syfs
This patch has the SW FCoE driver and the bnx2fc
driver make use of the new fcoe_sysfs API added
earlier in this patch series.

After this patch a fcoe_ctlr_device is allocated with
private data in this order.

+------------------+   +------------------+
| fcoe_ctlr_device |   | fcoe_ctlr_device |
+------------------+   +------------------+
| fcoe_ctlr        |   | fcoe_ctlr        |
+------------------+   +------------------+
| fcoe_interface   |   | bnx2fc_interface |
+------------------+   +------------------+

libfcoe also takes part in this new model since it
discovers and manages fcoe_fcf instances. The memory
allocation is different for FCFs. I didn't want to
impact libfcoe's fcoe_fcf processing, so this patch
creates fcoe_fcf_device instances for each discovered
fcoe_fcf. The two are paired using a (void * priv)
member of the fcoe_ctlr_device. This allows libfcoe
to continue maintaining its list of fcoe_fcf instances
and simply attaches and detaches them from existing
or new fcoe_fcf_device instances.

Signed-off-by: Robert Love <robert.w.love@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-23 09:43:13 +01:00
Robert Love
9a74e884ee [SCSI] libfcoe: Add fcoe_sysfs
This patch adds a 'fcoe bus' infrastructure to the kernel
that is driven by changes to libfcoe which allow LLDs to
present FIP (FCoE Initialization Protocol) discovered
entities and their attributes to user space via sysfs.

This patch adds the following APIs-

fcoe_ctlr_device_add
fcoe_ctlr_device_delete
fcoe_fcf_device_add
fcoe_fcf_device_delete

They allow the LLD to expose the FCoE ENode Controller
and any discovered FCFs (Fibre Channel Forwarders, e.g.
FCoE switches) to the user. Each of these new devices
has their own bus_type so that they are grouped together
for easy lookup from a user space application. Each
new class has an attribute_group to expose attributes
for any created instances. The attributes are-

fcoe_ctlr_device
* fcf_dev_loss_tmo
* lesb_link_fail
* lesb_vlink_fail
* lesb_miss_fka
* lesb_symb_err
* lesb_err_block
* lesb_fcs_error

fcoe_fcf_device
* fabric_name
* switch_name
* priority
* selected
* fc_map
* vfid
* mac
* fka_peroid
* fabric_state
* dev_loss_tmo

A device loss infrastructre similar to the FC Transport's
is also added by this patch. It is nice to have so that a
link flapping adapter doesn't continually advance the count
used to identify the discovered FCF. FCFs will exist in a
"Disconnected" state until either the timer expires or the
FCF is rediscovered and becomes "Connected."

This patch generates a few checkpatch.pl WARNINGS that
I'm not sure what to do about. They're macros modeled
around the FC Transport attribute building macros, which
have the same 'feature' where the caller can ommit a cast
in the argument list and no cast occurs in the code. I'm
not sure how to keep the code condensed while keeping the
macros. Any advice would be appreciated.

Signed-off-by: Robert Love <robert.w.love@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-23 09:40:09 +01:00
Robert Love
fd8f89027d [SCSI] bnx2fc: Allocate fcoe_ctlr with bnx2fc_interface, not as a member
Currently the fcoe_ctlr associated with an interface is allocated
    as a member of struct bnx2fc_interface. This causes problems when
    when later patches attempt to use the new fcoe_sysfs APIs which
    allow us to allocate the bnx2fc_interface as private data to a
    fcoe_ctlr_device instance. The problem is that libfcoe wants to
    be able use pointer math to find a fcoe_ctlr's fcoe_ctlr_device
    as well as finding a fcoe_ctlr_device's assocated fcoe_ctlr. To
    do this we need to allocate the fcoe_ctlr_device, with private
    data for the LLD. The private data will contain the fcoe_ctlr
    and its private data will be the bnx2fc_interface.

    +-------------------+
    | fcoe_ctlr_device  |
    +-------------------+
    | fcoe_ctlr         |
    +-------------------+
    | bnx2fc_interface  |
    +-------------------+

    This prep work will allow us to go from a fcoe_ctlr_device
    instance to its fcoe_ctlr as well as from a fcoe_ctlr to its
    fcoe_ctlr_device once the fcoe_sysfs API is in use (later
    patches in this series).

Signed-off-by: Robert Love <robert.w.love@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-23 09:38:11 +01:00
Robert Love
619fe4bed4 [SCSI] fcoe: Allocate fcoe_ctlr with fcoe_interface, not as a member
Currently the fcoe_ctlr associated with an interface is allocated
as a member of struct fcoe_interface. This causes problems when
attempting to use the new fcoe_sysfs APIs which allow us to allocate
the fcoe_interface as private data to the fcoe_ctlr_device instance.
The problem is that libfcoe wants to be able use pointer math to find a
fcoe_ctlr's fcoe_ctlr_device as well as finding a fcoe_ctlr_device's
assocated fcoe_ctlr. To do this we need to allocate the
fcoe_ctlr_device, with private data for the LLD. The private data
contains the fcoe_ctlr and its private data is the fcoe_interface.
This patch only allocates the fcoe_interface with the fcoe_ctlr, the
fcoe_ctlr_device will be added in a later patch, which will complete
the below diagram-

+------------------+
| fcoe_ctlr_device |
+------------------+
| fcoe_ctlr        |
+------------------+
| fcoe_interface   |
+------------------+

This prep work will allow us to go from a fcoe_ctlr_device instance
to its fcoe_ctlr as well as from a fcoe_ctlr to its fcoe_ctlr_device
once the fcoe_sysfs API is in use (later patches in this series).

Signed-off-by: Robert Love <robert.w.love@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-23 09:36:27 +01:00
Jun'ichi Nomura
b7e94a1686 [SCSI] Fix dm-multipath starvation when scsi host is busy
block congestion control doesn't have any concept of fairness across
multiple queues.  This means that if SCSI reports the host as busy in
the queue congestion control it can result in an unfair starvation
situation in dm-mp if there are multiple multipath devices on the same
host.  For example:
http://www.redhat.com/archives/dm-devel/2012-May/msg00123.html

The fix for this is to report only the sdev busy state (and ignore the
host busy state) in the block congestion control call back.
The host is still congested, but the SCSI subsystem will sort out the
congestion in a fair way because it knows the relation between the
queues and the host.

[jejb: fixed up trailing whitespace]
Reported-by: Bernd Schubert <bernd.schubert@itwm.fraunhofer.de>
Tested-by: Bernd Schubert <bernd.schubert@itwm.fraunhofer.de>
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-23 09:34:17 +01:00
Shirish Pargaonkar
2c0c2a08be cifs: fix oops while traversing open file list (try #4)
While traversing the linked list of open file handles, if the identfied
file handle is invalid, a reopen is attempted and if it fails, we
resume traversing where we stopped and cifs can oops while accessing
invalid next element, for list might have changed.

So mark the invalid file handle and attempt reopen if no
valid file handle is found in rest of the list.
If reopen fails, move the invalid file handle to the end of the list
and start traversing the list again from the begining.
Repeat this four times before giving up and returning an error if
file reopen keeps failing.

Cc: <stable@vger.kernel.org>
Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-05-23 12:33:18 +04:00
Sedat Dilek
ea4b574028 cifs: Fix comment as d_alloc_root() is replaced by d_make_root()
For more details see <file: Documentation/filesystems/porting>.

Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-05-23 12:33:16 +04:00
Steve French
1080ef758f CIFS: Introduce SMB2 mounts as vers=2.1
As with Linux nfs client, which uses "nfsvers=" or "vers=" to
indicate which protocol to use for mount, specifying

"vers=2.1"

will force an SMB2 mount. When vers is not specified CIFS is used

"vers=1"

We can eventually autonegotiate down from SMB2 to CIFS
when SMB2 is stable enough to make it the default, but this
is for the future. At that time we could also implement a
"maxprotocol" mount option as smbclient and Samba have today,
but that would be premature until SMB2 is stable.

Intially the SMB2 Kconfig option will depend on "BROKEN"
until the merge is complete, and then be "EXPERIMENTAL"
When it is no longer experimental we can consider changing
the default protocol to attempt first.

Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Acked-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-05-23 12:33:15 +04:00
Steve French
675f36fb1d CIFS: Introduce SMB2 Kconfig option
SMB2 is the followon to the CIFS (and SMB) protocols
and the default for Windows since Windows Vista, and also
now implemented by various non-Windows servers. SMB2
is more secure, has various performance advantages, including
larger i/o sizes, flow control, better caching model and more.
SMB2 also resolves some scalability limits in the CIFS
protocol and adds many new features while being much
simpler (only a few dozen commands instead of hundreds)
and since the protocol is clearer it is also more consistently
implemented across servers and thus easier to optimize.

After much discussion with Jeff Layton, Jeremy Allison
and others at Connectathon, we decided to move the SMB2
code from a distinct .ko and fstype into distinct
C files that optionally build in cifs.ko. As a result
the Kconfig gets simpler.

To avoid destabilizing CIFS, the SMB2 code is going
to be moved into its own experimental CONFIG_CIFS_SMB2 ifdef
as it is merged and rereviewed. The changes to stable
CIFS (builds with the SMB2 ifdef off) are expected to be
fairly small.

Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-05-23 12:33:14 +04:00
Pavel Shilovsky
452757897a CIFS: Move add/set_credits and get_credits_field to ops structure
Acked-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-05-23 12:33:12 +04:00
Pavel Shilovsky
8aa26f3ed8 CIFS: Move protocol specific demultiplex thread calls to ops struct
Acked-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-05-23 12:33:11 +04:00
Pavel Shilovsky
eb37871118 CIFS: Move protocol specific part from cifs_readv_receive to ops struct
Acked-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-05-23 12:33:09 +04:00
Pavel Shilovsky
1887f60103 CIFS: Move header_size/max_header_size to ops structure
Acked-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-05-23 12:33:08 +04:00
Pavel Shilovsky
082d0642c6 CIFS: Move protocol specific part from SendReceive2 to ops struct
Acked-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-05-23 12:32:57 +04:00
Namjae Jeon
4886b1afee [SCSI] ufs: fix potential NULL pointer dereferencing error in ufshcd_prove.
Avoid dereferencing a NULL pointer if scsi_host_alloc is failed.

Signed-off-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-23 09:29:39 +01:00
David S. Miller
ff06dffbc8 sparc: Add full proper error handling to strncpy_from_user().
Linus removed the end-of-address-space hackery from
fs/namei.c:do_getname() so we really have to validate these edge
conditions and cannot cheat any more (as x86 used to as well).

Move to a common C implementation like x86 did.  And if both
src and dst are sufficiently aligned we'll do word at a time
copies and checks as well.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-22 23:32:27 -07:00
Darrick J. Wong
8f888ef846 jbd2: change disk layout for metadata checksumming
Define flags and allocate space in on-disk journal structures to support
checksumming of journal metadata.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2012-05-22 22:43:41 -04:00
Linus Torvalds
6101167727 dlm for 3.5
This set includes some minor fixes and improvements.
 The one large patch addresses the special "nodir" mode,
 which has been a long neglected proof of concept, but
 with these fixes seems to be quite usable.  It allows
 the resource master to be assigned statically instead of
 dynamically, which can improve performance if there is
 little locality and most resources are shared.
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Merge tag 'dlm-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm

Pull dlm updates from David Teigland:
 "This set includes some minor fixes and improvements.  The one large
  patch addresses the special "nodir" mode, which has been a long
  neglected proof of concept, but with these fixes seems to be quite
  usable.  It allows the resource master to be assigned statically
  instead of dynamically, which can improve performance if there is
  little locality and most resources are shared."

* tag 'dlm-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm:
  dlm: NULL dereference on failure in kmem_cache_create()
  gfs2: fix recovery during unmount
  dlm: fixes for nodir mode
  dlm: improve error and debug messages
  dlm: avoid unnecessary search in search_rsb
  dlm: limit rcom debug messages
  dlm: fix waiter recovery
  dlm: prevent connections during shutdown
2012-05-22 19:31:38 -07:00