Commit graph

129086 commits

Author SHA1 Message Date
Linus Torvalds
6f12d2ee52 Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/ibft
* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/ibft:
  ibft: Fix finding IBFT ACPI table on UEFI
2011-12-15 14:16:47 -08:00
Linus Torvalds
88703f2775 Merge branch 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
* 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: r8712u: Add new USB ID
  staging: tidspbridge: request dmtimer clocks on init
  staging: tidspbridge: include module.h by default
2011-12-15 14:15:01 -08:00
Linus Torvalds
f242bbc598 Merge branch 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
* 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  USB: option: Removing one bogus and adding some new Huawei combinations
  USB: cdc-acm: add IDs for Motorola H24 HSPA USB module.
  usb: option: Add Huawei E398 controlling interfaces
  usb: renesas_usbhs: add hcd->has_tt for low/full speed
  usb: renesas_usbhs: typofix: irq_dtch control DTCHE
  usb: gadget: storage: release superspeed descriptors.
2011-12-15 14:14:41 -08:00
Linus Torvalds
42ebfc61cf Merge branch 'stable/for-linus-fixes-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
* 'stable/for-linus-fixes-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen/swiotlb: Use page alignment for early buffer allocation.
  xen: only limit memory map to maximum reservation for domain 0.
2011-12-15 10:52:40 -08:00
Konrad Rzeszutek Wilk
63a741757d xen/swiotlb: Use page alignment for early buffer allocation.
This fixes an odd bug found on a Dell PowerEdge 1850/0RC130
(BIOS A05 01/09/2006) where all of the modules doing pci_set_dma_mask
would fail with:

ata_piix 0000:00:1f.1: enabling device (0005 -> 0007)
ata_piix 0000:00:1f.1: can't derive routing for PCI INT A
ata_piix 0000:00:1f.1: BMDMA: failed to set dma mask, falling back to PIO

The issue was the Xen-SWIOTLB was allocated such as that the end of
buffer was stradling a page (and also above 4GB). The fix was
spotted by Kalev Leonid  which was to piggyback on git commit
e79f86b2ef "swiotlb: Use page alignment
for early buffer allocation" which:

	We could call free_bootmem_late() if swiotlb is not used, and
	it will shrink to page alignment.

	So alloc them with page alignment at first, to avoid lose two pages

And doing that fixes the outstanding issue.

CC: stable@kernel.org
Suggested-by: "Kalev, Leonid" <Leonid.Kalev@ca.com>
Reported-and-Tested-by: "Taylor, Neal E" <Neal.Taylor@ca.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-12-15 11:28:46 -05:00
Larry Finger
c7caf4d4c5 staging: r8712u: Add new USB ID
Add USB ID for Sitecom WLA-2000 v1.001 WLAN.

Reported-and-tested-by: Roland Gruber <post@rolandgruber.de>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-13 16:13:15 -08:00
Omar Ramirez Luna
ed625b9143 staging: tidspbridge: request dmtimer clocks on init
Given that dm timer framework doesn't support request of clocks
by soft | hard irqs because some recent changes, tidspbridge needs
to request its clocks on init and enable/disable them on demand.

This was first seen on 3.2-rc1.

Signed-off-by: Omar Ramirez Luna <omar.ramirez@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-13 16:12:06 -08:00
Omar Ramirez Luna
0a7e22e61e staging: tidspbridge: include module.h by default
Fixes compilation break when compiled as part of the kernel:

drivers/staging/tidspbridge/rmgr/drv_interface.c:134: error: expected declaration specifiers or '...' before string constant
drivers/staging/tidspbridge/rmgr/drv_interface.c:134: warning: data definition has no type or storage class
drivers/staging/tidspbridge/rmgr/drv_interface.c:134: warning: type defaults to 'int' in declaration of 'MODULE_AUTHOR'
drivers/staging/tidspbridge/rmgr/drv_interface.c:134: warning: function declaration isn't a prototype
drivers/staging/tidspbridge/rmgr/drv_interface.c:135: error: expected declaration specifiers or '...' before string constant
drivers/staging/tidspbridge/rmgr/drv_interface.c:135: warning: data definition has no type or storage class
drivers/staging/tidspbridge/rmgr/drv_interface.c:135: warning: type defaults to 'int' in declaration of 'MODULE_LICENSE'
drivers/staging/tidspbridge/rmgr/drv_interface.c:135: warning: function declaration isn't a prototype
drivers/staging/tidspbridge/rmgr/drv_interface.c:136: error: expected declaration specifiers or '...' before string constant
drivers/staging/tidspbridge/rmgr/drv_interface.c:136: warning: data definition has no type or storage class
drivers/staging/tidspbridge/rmgr/drv_interface.c:136: warning: type defaults to 'int' in declaration of 'MODULE_VERSION'
drivers/staging/tidspbridge/rmgr/drv_interface.c:136: warning: function declaration isn't a prototype
drivers/staging/tidspbridge/rmgr/drv_interface.c: In function 'omap34_xx_bridge_probe':
drivers/staging/tidspbridge/rmgr/drv_interface.c:359: error: 'THIS_MODULE' undeclared (first use in this function)
drivers/staging/tidspbridge/rmgr/drv_interface.c:359: error: (Each undeclared identifier is reported only once
drivers/staging/tidspbridge/rmgr/drv_interface.c:359: error: for each function it appears in.)

Signed-off-by: Omar Ramirez Luna <omar.ramirez@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-13 16:11:37 -08:00
Linus Torvalds
653f42f6b6 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  ceph: add missing spin_unlock at ceph_mdsc_build_path()
  ceph: fix SEEK_CUR, SEEK_SET regression
  crush: fix mapping calculation when force argument doesn't exist
  ceph: use i_ceph_lock instead of i_lock
  rbd: remove buggy rollback functionality
  rbd: return an error when an invalid header is read
  ceph: fix rasize reporting by ceph_show_options
2011-12-13 14:59:42 -08:00
Bjørn Mork
02a551c975 USB: option: Removing one bogus and adding some new Huawei combinations
Huawei use the product code HUAWEI_PRODUCT_E353 (0x1506) for a
number of different devices, which each can appear with a number
of different descriptor sets.  Different types of interfaces
can be identified by looking at the subclass and protocol fields

Subclass 1 protocol 8 is actually the data interface of a CDC
ECM set, with subclass 1 protocol 9 as the control interface.
Neither support serial data communcation, and cannot therefore
be supported by this driver.

At the same time, add a few other sets which appear if the
device is configured in "Windows mode" using this modeswitch
message:
55534243000000000000000000000011060000000100000000000000000000

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-13 09:46:01 -08:00
Yinghai Lu
935a9fee51 ibft: Fix finding IBFT ACPI table on UEFI
Found one system with UEFI/iBFT, kernel does not detect the iBFT during
iscsi_ibft module loading.

Root cause: on x86 (UEFI), we are calling of find_ibft_region() much earlier
- specifically in setup_arch() before ACPI is enabled.

Try to split acpi checking code out and call that later

At that time ACPI iBFT already get permanent mapped with ioremap.
So isa_virt_to_bus() will get wrong phys from right virt address.
We could just skip that phys address printing.

For legacy one, print the found address early.

-v2: update comments and description according to Konrad.
-v3: fix problem about module use case that is found by Konrad.
-v4: use acpi_get_table() instead of acpi_table_parse() to handle module use case that is found by Konrad again..
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Konrad Rzeszutek Wilk <konrad@kernel.org>
2011-12-13 09:08:31 -05:00
Linus Torvalds
12870da5c3 Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (jz4740) Staticise jz4740_hwmon_driver
  hwmon: (jz4740) fix signedness bug
2011-12-12 20:08:27 -08:00
Linus Torvalds
71fe5ccac7 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc:
  mmc: core: Fix deadlock when the CONFIG_MMC_UNSAFE_RESUME is not defined
  mmc: sdhci-s3c: Remove old and misprototyped suspend operations
  mmc: tmio: fix clock gating on platforms with a .set_pwr() method
  mmc: sh_mmcif: fix clock gating on platforms with a .down_pwr() method
  mmc: core: Fix typo at mmc_card_sleep
  mmc: core: Fix power_off_notify during suspend
  mmc: core: Fix setting power notify state variable for non-eMMC
  mmc: core: Add quirk for long data read time
  mmc: Add module.h include to sdhci-cns3xxx.c
  mmc: mxcmmc: fix falling back to PIO
  mmc: omap_hsmmc: DMA unmap only once in case of MMC error
2011-12-12 20:06:13 -08:00
Krzysztof Hałasa
6abff5dc4d USB: cdc-acm: add IDs for Motorola H24 HSPA USB module.
Add USB IDs for Motorola H24 HSPA USB module.

Signed-off-by: Krzysztof Hałasa <khalasa@piap.pl>
Acked-by: Oliver Neukum <oneukum@suse.de>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-12 14:31:33 -08:00
Alex Hermann
414b591fd1 usb: option: Add Huawei E398 controlling interfaces
This patch adds the controlling interfaces for the Huawei E398.

Thanks to Bjørn Mork <bjorn@mork.no> for extracting the interface
numbers from the windows driver.

Signed-off-by: Alex Hermann <alex@wenlex.nl>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-12 14:31:32 -08:00
Axel Lin
d6c4f2ac1d hwmon: (jz4740) Staticise jz4740_hwmon_driver
It is not used outside this driver so no need to make the symbol global.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-12-12 08:31:21 -08:00
Axel Lin
0b57d7602b hwmon: (jz4740) fix signedness bug
wait_for_completion_interruptible_timeout() may return negative value.
In this case, checking if (t > 0)  will return true if t is unsigned.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: stable@kernel.org (3.0+)
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-12-12 08:31:21 -08:00
Kuninori Morimoto
1115b9e279 usb: renesas_usbhs: add hcd->has_tt for low/full speed
Low/Full speed device is not recognized without this patch

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-12-12 12:24:42 +02:00
Kuninori Morimoto
b95eb7476e usb: renesas_usbhs: typofix: irq_dtch control DTCHE
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-12-12 12:24:34 +02:00
Yu Xu
f44b915d31 usb: gadget: storage: release superspeed descriptors.
Release superspeed mass storage descriptors memory
when the function is unbind.

Signed-off-by: Yu Xu <yuxu@marvell.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-12-12 12:24:07 +02:00
Sujit Reddy Thumma
49df780749 mmc: core: Fix deadlock when the CONFIG_MMC_UNSAFE_RESUME is not defined
mmc_suspend_host() tries to claim host during suspend
and release it only when the bus suspend operation is
compeleted. If CONFIG_MMC_UNSAFE_RESUME is defined and
the host is flagged as removable, mmc_suspend_host()
tries to remove the card. In this process, the file system
sync can get blocked trying to acquire host which is already
claimed by mmc_suspend_host() causing deadlock.

Fix this deadlock by releasing host before ->remove() is called.

Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
Acked-by: Ulf Hansson <ulf.hansson@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-12-10 16:18:39 -05:00
Mark Brown
524bfca2b4 mmc: sdhci-s3c: Remove old and misprototyped suspend operations
Now that the driver is using dev_pm_ops the suspend operations in the
platform_driver structure won't get called so don't need to be there,
and certainly shouldn't be the same function as dev_pm_ops since the
signatures are different.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-12-10 16:18:39 -05:00
Guennadi Liakhovetski
f6b8b52c68 mmc: tmio: fix clock gating on platforms with a .set_pwr() method
Do not power down the card in .set_ios(), unless MMC_POWER_OFF is
requested. This fixes the SDHI functionality on ecovec.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-12-10 16:18:38 -05:00
Guennadi Liakhovetski
f6bc41fb08 mmc: sh_mmcif: fix clock gating on platforms with a .down_pwr() method
Do not power down the card in .set_ios(), unless MMC_POWER_OFF is
requested. This fixes the MMCIF interface functionality on ecovec boards.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-12-10 16:18:37 -05:00
Kyungmin Park
c99872a16f mmc: core: Fix typo at mmc_card_sleep
Fix wrong bus_ops->sleep check.  (This isn't expected to have real-world
consequences, because the mmc core always defines both 'awake' and
'sleep' ops.)

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-12-10 16:18:37 -05:00
Girish K S
a80f162763 mmc: core: Fix power_off_notify during suspend
The eMMC 4.5 devices respond to only RESET and AWAKE command in the
sleep state. Hence the mmc switch command to notify power off state
should be sent before the device enters sleep state.

This patch fixes the same.

Signed-off-by: Girish K S <girish.shivananjappa@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-12-10 16:18:36 -05:00
Girish K S
96a85d548b mmc: core: Fix setting power notify state variable for non-eMMC
This patch skips the setting of the power notify state variable
for non eMMC 4.5 devices. Also fixes the problem of omap_hsmmc
noisy/broken for suspend resume reported by Kevin Hilman.

Signed-off-by: Girish K S <girish.shivananjappa@linaro.org>
Acked-by: Ulf Hansson <ulf.hansson@stericsson.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-12-10 16:18:36 -05:00
Stefan Nilsson XK
6de5fc9cf7 mmc: core: Add quirk for long data read time
Adds a quirk that sets the data read timeout to a fixed value instead
of relying on the information in the CSD. The timeout value chosen
is 300ms since that has proven enough for the problematic cards found,
but could be increased if other cards require this.

This patch also enables this quirk for certain Micron cards known to
have this problem.

Signed-off-by: Stefan Nilsson XK <stefan.xk.nilsson@stericsson.com>
Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: <stable@kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-12-10 16:18:35 -05:00
Chris Ball
7833c66b2d mmc: Add module.h include to sdhci-cns3xxx.c
Fixes: drivers/mmc/host/sdhci-cns3xxx.c:110: error: 'THIS_MODULE'
       undeclared here (not in a function)

Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-12-10 16:18:35 -05:00
Sascha Hauer
e58f516ff4 mmc: mxcmmc: fix falling back to PIO
When we can't configure the dma channel we want to fall
back to PIO. We do this by setting host->do_dma to zero.
This does not work as do_dma is used to see whether dma
can be used for the current transfer. Instead, we have
to set host->dma to NULL.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Cc: <stable@kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-12-10 16:18:34 -05:00
Linus Torvalds
e2f4e0bc2a Merge branch 'spi/for-3.2' of git://git.pengutronix.de/git/wsa/linux-2.6
* 'spi/for-3.2' of git://git.pengutronix.de/git/wsa/linux-2.6:
  spi/gpio: fix section mismatch warning
  spi/fsl-espi: disable CONFIG_SPI_FSL_ESPI=m build
  spi/nuc900: Include linux/module.h
  spi/ath79: fix compile error due to missing include
2011-12-09 14:41:50 -08:00
Linus Torvalds
af209e0aea Merge branch 'for-linus' of git://neil.brown.name/md
* 'for-linus' of git://neil.brown.name/md:
  md: raid5 crash during degradation
  md/raid5: never wait for bad-block acks on failed device.
  md: ensure new badblocks are handled promptly.
  md: bad blocks shouldn't cause a Blocked status on a Faulty device.
  md: take a reference to mddev during sysfs access.
  md: refine interpretation of "hold_active == UNTIL_IOCTL".
  md/lock: ensure updates to page_attrs are properly locked.
2011-12-09 08:18:08 -08:00
Linus Torvalds
53523d5263 Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile
* git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
  arch/tile: use new generic {enable,disable}_percpu_irq() routines
  drivers/net/ethernet/tile: use skb_frag_page() API
  asm-generic/unistd.h: support new process_vm_{readv,write} syscalls
  arch/tile: fix double-free bug in homecache_free_pages()
  arch/tile: add a few #includes and an EXPORT to catch up with kernel changes.
2011-12-09 08:08:57 -08:00
Alexandre Bounine
1cee22b7f3 rapidio/tsi721: modify PCIe capability settings
Modify initialization of PCIe capability registers in Tsi721 mport driver:
 - change Completion Timeout value to avoid unexpected data transfer
   aborts during intensive traffic.
 - replace hardcoded offset of PCIe capability block by making it use the
   common function.

This patch is applicable to kernel versions starting from 3.2-rc1.

Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-12-09 07:50:29 -08:00
Alexandre Bounine
b439e66f04 rapidio/tsi721: fix mailbox resource reporting
Bug fix for Tsi721 RapidIO mport driver: Tsi721 supports four RapidIO
mailboxes (MBOX0 - MBOX3) as defined by RapidIO specification.  Mailbox
resources has to be properly reported to allow use of all available
mailboxes (initial version reports only MBOX0).

This patch is applicable to kernel versions staring from 3.2-rc1.

Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-12-09 07:50:29 -08:00
Alexandre Bounine
ceb9639812 rapidio/tsi721: switch to dma_zalloc_coherent
Replace the pair dma_alloc_coherent()+memset() with the new
dma_zalloc_coherent() added by Andrew Morton for kernel version 3.2

Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-12-09 07:50:29 -08:00
Jonghwan Choi
2dbcd05f1e drivers/rtc/rtc-s3c.c: fix driver clock enable/disable balance issues
If an error occurs after the clock is enabled, the enable/disable state
can become unbalanced.

Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-12-09 07:50:28 -08:00
Adam Kwolek
5d8c71f9e5 md: raid5 crash during degradation
NULL pointer access causes crash in raid5 module.

Signed-off-by: Adam Kwolek <adam.kwolek@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
2011-12-09 14:26:11 +11:00
Linus Torvalds
09d9673d53 Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  alarmtimers: Fix time comparison
  ptp: Fix clock_getres() implementation
2011-12-08 13:21:28 -08:00
NeilBrown
9283d8c5af md/raid5: never wait for bad-block acks on failed device.
Once a device is failed we really want to completely ignore it.
It should go away soon anyway.

In particular the presence of bad blocks on it should not cause us to
block as we won't be trying to write there anyway.

So as soon as we can check if a device is Faulty, do so and pretend
that it is already gone if it is Faulty.

Signed-off-by: NeilBrown <neilb@suse.de>
2011-12-08 16:27:57 +11:00
NeilBrown
8bd2f0a05b md: ensure new badblocks are handled promptly.
When we mark blocks as bad we need them to be acknowledged by the
metadata handler promptly.

For an in-kernel metadata handler that was already being done.  But
for an external metadata handler we need to alert it of the change by
sending a notification through the sysfs file.  This adds that
notification.

Signed-off-by: NeilBrown <neilb@suse.de>
2011-12-08 16:26:08 +11:00
NeilBrown
52c64152a9 md: bad blocks shouldn't cause a Blocked status on a Faulty device.
Once a device is marked Faulty the badblocks - whether acknowledged or
not - become irrelevant.  So they shouldn't cause the device to be
marked as Blocked.

Without this patch, a process might write "-blocked" to clear the
Blocked status, but while that will correctly fail the device, it
won't remove the apparent 'blocked' status.

Signed-off-by: NeilBrown <neilb@suse.de>
2011-12-08 16:22:48 +11:00
NeilBrown
af8a24347f md: take a reference to mddev during sysfs access.
When we are accessing an mddev via sysfs we know that the
mddev cannot disappear because it has an embedded kobj which
is refcounted by sysfs.
And we also take the mddev_lock.
However this is not enough.

The final mddev_put could have been called and the
mddev_delayed_delete is waiting for sysfs to let go so it can destroy
the kobj and mddev.
In this state there are a lot of changes that should not be attempted.

To to guard against this we:
 - initialise mddev->all_mddevs in on last put so the state can be
   easily detected.
 - in md_attr_show and md_attr_store, check ->all_mddevs under
   all_mddevs_lock and mddev_get the mddev if it still appears to
   be active.

This means that if we get to sysfs as the mddev is being deleted we
will get -EBUSY.

rdev_attr_store and rdev_attr_show are similar but already have
sufficient protection.  They check that rdev->mddev still points to
mddev after taking mddev_lock.  As this is cleared  before delayed
removal which can only be requested under the mddev_lock, this
ensure the rdev and mddev are still alive.

Signed-off-by: NeilBrown <neilb@suse.de>
2011-12-08 15:49:46 +11:00
NeilBrown
1d23f178d5 md: refine interpretation of "hold_active == UNTIL_IOCTL".
We like md devices to disappear when they really are not needed.
However it is not possible to tell from the current state whether it
is needed or not.  We can only tell from recent history of changes.

In particular immediately after we create an md device it looks very
similar to immediately after we have finished with it.

So we always preserve a newly created md device until something
significant happens.  This state is stored in 'hold_active'.

The normal case is to keep it until an ioctl happens, as that will
normally either activate it, or explicitly de-activate it.  If it
doesn't then it was probably created by mistake and it is now time to
get rid of it.

We can also modify an array via sysfs (instead of via ioctl) and we
currently treat any change via sysfs like an ioctl as a sign that if
it now isn't more active, it should be destroyed.
However this is not appropriate as changes made via sysfs are more
gradual so we should look for a more definitive change.

So this patch only clears 'hold_active' from UNTIL_IOCTL to clear when
the array_state is changed via sysfs.  Other changes via sysfs
are ignored.

Signed-off-by: NeilBrown <neilb@suse.de>
2011-12-08 15:49:12 +11:00
Per Forlin
053bf34f5a mmc: omap_hsmmc: DMA unmap only once in case of MMC error
Reported by Russell King:
mmcblk0: error -84 transferring data, sector 149201, nr 64,
cmd response 0x900, card status 0xb00
mmcblk0: retrying using single block read

WARNING: at lib/dma-debug.c:811 check_unmap
omap_hsmmc omap_hsmmc.0: DMA-API: device driver tries to free DMA memory
it has not allocated [device address=0x0000000080933000] [size=20480 bytes]

In case of an error dma_unmap() is issued in omap_hsmmc_dma_cleanup()
and then again in omap_hsmmc_post_req(). Resolve this by clearing the
host_cookie to indicate there is no DMA mapped memory to unmap.

Signed-off-by: Per Forlin <per.forlin@linaro.org>
Tested-by: Balaji T K <balajitk@ti.com>
Tested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-12-07 23:10:56 -05:00
Linus Torvalds
34a9d2c39a Merge branch '3.2-rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
* '3.2-rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (25 commits)
  iscsi-target: Fix hex2bin warn_unused compile message
  target: Don't return an error if disabling unsupported features
  target/rd: fix or rewrite the copy routine
  target/rd: simplify the page/offset computation
  target: remove the unused se_dev_list
  target/file: walk properly over sg list
  target: remove unused struct fields
  target: Fix page length in emulated INQUIRY VPD page 86h
  target: Handle 0 correctly in transport_get_sectors_6()
  target: Don't return an error status for 0-length READ and WRITE
  iscsi-target: Use kmemdup rather than duplicating its implementation
  iscsi-target: Add missing F_BIT for iscsi_tm_rsp
  iscsi-target: Fix residual count hanlding + remove iscsi_cmd->residual_count
  target: Reject SCSI data overflow for fabrics using transport_generic_map_mem_to_cmd
  target: remove the unused t_task_pt_sgl and t_task_pt_sgl_num se_cmd fields
  target: remove the t_tasks_bidi se_cmd field
  target: remove the t_tasks_fua se_cmd field
  target: remove the se_ordered_node se_cmd field
  target: remove the se_obj_ptr and se_orig_obj_ptr se_cmd fields
  target: Drop config_item_name usage in fabric TFO->free_wwn()
  ...
2011-12-07 18:18:27 -08:00
Linus Torvalds
1c70132ffb Merge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM / Driver core: leave runtime PM enabled during system shutdown
2011-12-07 16:12:29 -08:00
Alan Stern
fe6b91f470 PM / Driver core: leave runtime PM enabled during system shutdown
Disabling all runtime PM during system shutdown turns out not to be a
good idea, because some devices may need to be woken up from a
low-power state at that time.

The whole point of disabling runtime PM for system shutdown was to
prevent untimely runtime-suspend method calls.  This patch (as1504)
accomplishes the same result by incrementing the usage count for each
device and waiting for ongoing runtime-PM callbacks to finish.  This
is what we already do during system suspend and hibernation, which
makes sense since the shutdown method is pretty much a legacy analog
of the pm->poweroff method.

This fixes a recent regression on some OMAP systems introduced by
commit af8db1508f (PM / driver core:
disable device's runtime PM during shutdown).

Reported-and-tested-by: NeilBrown <neilb@suse.de>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2011-12-07 22:26:56 +01:00
Manuel Lauss
c65b53ba4f spi/gpio: fix section mismatch warning
Fixes:
The function __devinit spi_gpio_probe() references
a function __init spi_gpio_alloc.isra.4().
If spi_gpio_alloc.isra.4 is only used by spi_gpio_probe then
annotate spi_gpio_alloc.isra.4 with a matching annotation.

[wsa: fix spi_gpio_request(), too]

Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2011-12-07 22:17:39 +01:00
Jiri Slaby
d9ddcec35d spi/fsl-espi: disable CONFIG_SPI_FSL_ESPI=m build
When spi_fsl_espi is chosen to be built as a module, there is a build
error because we test only CONFIG_SPI_FSL_ESPI in declaration of
struct mpc8xxx_spi in drivers/spi/spi_fsl_lib.h. Also some called
functions are not exported.

So we forbid CONFIG_SPI_FSL_ESPI to be tristate here.

The error looks like:
drivers/spi/spi_fsl_espi.c: In function 'fsl_espi_bufs':
drivers/spi/spi_fsl_espi.c:232: error: 'struct mpc8xxx_spi' has no member named 'len'
...

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2011-12-07 21:58:25 +01:00