| Commit message (Collapse) | Author | Age |
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It may happen that uasp will free the request in irq conntext, the
callchain:
uasp_cmd_release() -> transport_generic_free_cmd() -> core_dec_lacl_count()
where the last function enables the IRQ. Those irqs are re-disabled
later (due to the spin.*irq_restore) but in between we could get hurt.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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The multiple calls to pr_debug() each with one letter results in a new
line. This patch merges the multiple requests into one call per line
so we don't have the multiple line cuts.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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This patch adds a work-around for handling zero allocation length
control CDBs (type SCF_SCSI_CONTROL_SG_IO_CDB) that was causing an
OOPs with the following raw calls:
# sg_raw -v /dev/sdd 3 0 0 0 0 0
# sg_raw -v /dev/sdd 0x1a 0 1 0 0 0
This patch will follow existing zero-length handling for data I/O
and silently return with GOOD status. This addresses the zero length
issue, but the proper long-term resolution for handling arbitary
allocation lengths will be to refactor out data-phase handling in
individual CDB emulation logic within target_core_cdb.c
Reported-by: Roland Dreier <roland@purestorage.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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According to SPC-4, the sense key for commands that are failed with
INVALID FIELD IN PARAMETER LIST and INVALID FIELD IN CDB should be
ILLEGAL REQUEST (5h) rather than ABORTED COMMAND (Bh). Without this
patch, a tcm_loop LUN incorrectly gives:
# sg_raw -r 1 -v /dev/sda 3 1 0 0 ff 0
Sense Information:
Fixed format, current; Sense key: Aborted Command
Additional sense: Invalid field in cdb
Raw sense data (in hex):
70 00 0b 00 00 00 00 0a 00 00 00 00 24 00 00 00
00 00
While a real SCSI disk gives:
Sense Information:
Fixed format, current; Sense key: Illegal Request
Additional sense: Invalid field in cdb
Raw sense data (in hex):
70 00 05 00 00 00 00 18 00 00 00 00 24 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
with the main point being that the real disk gives a sense key of
ILLEGAL REQUEST (5h).
Signed-off-by: Roland Dreier <roland@purestorage.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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Doing alloc_page(GFP_KERNEL | __GFP_ZERO) to get pages used for data
buffers wastes a lot of CPU clearing pages that will be quickly be
overwritten by the actual data. However, for emulated control
commands such as INQUIRY and so on, the code does assume that the
buffer is zeroed.
To avoid this CPU overhead, skip the __GFP_ZERO for commands that are
actually moving data, ie cmds that have SCF_SCSI_DATA_SG_IO_CDB set.
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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Initiators that aren't the active reservation holder should be able to
do a PERSISTENT RESERVE IN command in all cases, so add it to the list
of allowed CDBs in core_scsi3_pr_seq_non_holder().
Signed-off-by: Marco Sanvido <marco@purestorage.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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The comments quote the right parts of the spec:
* d) Establish a unit attention condition for the
* initiator port associated with every I_T nexus
* that lost its registration other than the I_T
* nexus on which the PERSISTENT RESERVE OUT command
* was received, with the additional sense code set
* to REGISTRATIONS PREEMPTED.
and
* e) Establish a unit attention condition for the initiator
* port associated with every I_T nexus that lost its
* persistent reservation and/or registration, with the
* additional sense code set to REGISTRATIONS PREEMPTED;
but the actual code accidentally uses ASCQ_2AH_RESERVATIONS_PREEMPTED
instead of ASCQ_2AH_REGISTRATIONS_PREEMPTED. Fix this.
Signed-off-by: Marco Sanvido <marco@purestorage.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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We never embedd the bio into a structure, so there is no need to allocate
64 bytes of headroom per bio.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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Some simple md-related fixes.
1/ two small fixes to ensure we handle an interrupted resync properly.
2/ avoid loading the bitmap multiple times in dm-raid
* tag 'md-3.3-fixes' of git://neil.brown.name/md:
md: two small fixes to handling interrupt resync.
Prevent DM RAID from loading bitmap twice.
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1/ If a resync is aborted we should record how far we got
(recovery_cp) the last request that we know has completed
(->curr_resync_completed) rather than the last request that was
submitted (->curr_resync).
2/ When a resync aborts we still want to update the metadata with
any changes, so set MD_CHANGE_DEVS even if we 'skip'.
Signed-off-by: NeilBrown <neilb@suse.de>
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The life cycle of a device-mapper target is:
1) create
2) resume
3) suspend
*) possibly repeat from 2
4) destroy
The dm-raid target is unconditionally calling MD's bitmap_load function upon
every resume. If steps 2 & 3 above are repeated, bitmap_load is called
multiple times. It is only written to be called once; otherwise, it allocates
new memory for the bitmap (without freeing the old) and incrementing the number
of pages it thinks it has without zeroing first. This ultimately leads to
access beyond allocated memory and lost memory.
Simply avoiding the bitmap_load call upon resume is not sufficient. If the
target was suspended while the initial recovery was only partially complete,
it needs to be restarted when the target is resumed. This is why
'md_wakeup_thread' is called before issuing the 'mddev_resume'.
Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
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SPI bug fixes for v3.3-rc2
Minor SPI device driver changes. A rename of the pch_spi_pcidev symbol
that merely eliminates a modpost warning, and a Kconfig change to allow
the Samsung spi driver to build on EXYNOS.
* tag 'spi-for-linus' of git://git.secretlab.ca/git/linux-2.6:
spi-topcliff-pch: rename pch_spi_pcidev to pch_spi_pcidev_driver
spi: Add spi-s3c64xx driver dependency on ARCH_EXYNOS4
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Rename static struct pci_driver pch_spi_pcidev to
pch_spi_pcidev_driver to get rid of warnings from modpost checks.
Signed-off-by: Danny Kukawka <danny.kukawka@bisect.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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The spi-s3c64xx driver is also used on Exynos4 so update the dependency
to enable build on those platforms.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
[grant.likely: relax depends to ARCH_EXYNOS instead of ARCH_EXYNOS4]
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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This fixes a memory-corrupting bug: not only does it cause the warning,
but as a result of dropping the refcount to zero, it causes the
pcmcia_socket0 device structure to be freed while it still has
references, causing slab caches corruption. A fatal oops quickly
follows this warning - often even just a 'dmesg' following the warning
causes the kernel to oops.
While testing suspend/resume on an ARM device with PCMCIA support, and a
CF card inserted, I found that after five suspend and resumes, the
kernel would complain, and shortly die after with slab corruption.
WARNING: at include/linux/kref.h:41 kobject_get+0x28/0x50()
As the message doesn't give a clue about which kobject, and the built-in
debugging in drivers/base/power/main.c happens too late, this was added
right before each get_device():
printk("%s: %p [%s] %u\n", __func__, dev, kobject_name(&dev->kobj), atomic_read(&dev->kobj.kref.refcount));
and on the 3rd s2ram cycle, the following behaviour observed:
On the 3rd suspend/resume cycle:
dpm_prepare: c1a0d998 [pcmcia_socket0] 3
dpm_suspend: c1a0d998 [pcmcia_socket0] 3
dpm_suspend_noirq: c1a0d998 [pcmcia_socket0] 3
dpm_resume_noirq: c1a0d998 [pcmcia_socket0] 3
dpm_resume: c1a0d998 [pcmcia_socket0] 3
dpm_complete: c1a0d998 [pcmcia_socket0] 2
4th:
dpm_prepare: c1a0d998 [pcmcia_socket0] 2
dpm_suspend: c1a0d998 [pcmcia_socket0] 2
dpm_suspend_noirq: c1a0d998 [pcmcia_socket0] 2
dpm_resume_noirq: c1a0d998 [pcmcia_socket0] 2
dpm_resume: c1a0d998 [pcmcia_socket0] 2
dpm_complete: c1a0d998 [pcmcia_socket0] 1
5th:
dpm_prepare: c1a0d998 [pcmcia_socket0] 1
dpm_suspend: c1a0d998 [pcmcia_socket0] 1
dpm_suspend_noirq: c1a0d998 [pcmcia_socket0] 1
dpm_resume_noirq: c1a0d998 [pcmcia_socket0] 1
dpm_resume: c1a0d998 [pcmcia_socket0] 1
dpm_complete: c1a0d998 [pcmcia_socket0] 0
------------[ cut here ]------------
WARNING: at include/linux/kref.h:41 kobject_get+0x28/0x50()
Modules linked in: ucb1x00_core
Backtrace:
[<c0212090>] (dump_backtrace+0x0/0x110) from [<c04799dc>] (dump_stack+0x18/0x1c)
[<c04799c4>] (dump_stack+0x0/0x1c) from [<c021cba0>] (warn_slowpath_common+0x50/0x68)
[<c021cb50>] (warn_slowpath_common+0x0/0x68) from [<c021cbdc>] (warn_slowpath_null+0x24/0x28)
[<c021cbb8>] (warn_slowpath_null+0x0/0x28) from [<c0335374>] (kobject_get+0x28/0x50)
[<c033534c>] (kobject_get+0x0/0x50) from [<c03804f4>] (get_device+0x1c/0x24)
[<c0388c90>] (dpm_complete+0x0/0x1a0) from [<c0389cc0>] (dpm_resume_end+0x1c/0x20)
...
Looking at commit 7b24e7988263 ("pcmcia: split up central event handler"),
the following change was made to cs.c:
return 0;
}
#endif
-
- send_event(skt, CS_EVENT_PM_RESUME, CS_EVENT_PRI_LOW);
+ if (!(skt->state & SOCKET_CARDBUS) && (skt->callback))
+ skt->callback->early_resume(skt);
return 0;
}
And the corresponding change in ds.c is from:
-static int ds_event(struct pcmcia_socket *skt, event_t event, int priority)
-{
- struct pcmcia_socket *s = pcmcia_get_socket(skt);
...
- switch (event) {
...
- case CS_EVENT_PM_RESUME:
- if (verify_cis_cache(skt) != 0) {
- dev_dbg(&skt->dev, "cis mismatch - different card\n");
- /* first, remove the card */
- ds_event(skt, CS_EVENT_CARD_REMOVAL, CS_EVENT_PRI_HIGH);
- mutex_lock(&s->ops_mutex);
- destroy_cis_cache(skt);
- kfree(skt->fake_cis);
- skt->fake_cis = NULL;
- s->functions = 0;
- mutex_unlock(&s->ops_mutex);
- /* now, add the new card */
- ds_event(skt, CS_EVENT_CARD_INSERTION,
- CS_EVENT_PRI_LOW);
- }
- break;
...
- }
- pcmcia_put_socket(s);
- return 0;
-} /* ds_event */
to:
+static int pcmcia_bus_early_resume(struct pcmcia_socket *skt)
+{
+ if (!verify_cis_cache(skt)) {
+ pcmcia_put_socket(skt);
+ return 0;
+ }
+ dev_dbg(&skt->dev, "cis mismatch - different card\n");
+ /* first, remove the card */
+ pcmcia_bus_remove(skt);
+ mutex_lock(&skt->ops_mutex);
+ destroy_cis_cache(skt);
+ kfree(skt->fake_cis);
+ skt->fake_cis = NULL;
+ skt->functions = 0;
+ mutex_unlock(&skt->ops_mutex);
+ /* now, add the new card */
+ pcmcia_bus_add(skt);
+ return 0;
+}
As can be seen, the original function called pcmcia_get_socket() and
pcmcia_put_socket() around the guts, whereas the replacement code
calls pcmcia_put_socket() only in one path. This creates an imbalance
in the refcounting.
Testing with pcmcia_put_socket() put removed shows that the bug is gone:
dpm_suspend: c1a10998 [pcmcia_socket0] 5
dpm_suspend_noirq: c1a10998 [pcmcia_socket0] 5
dpm_resume_noirq: c1a10998 [pcmcia_socket0] 5
dpm_resume: c1a10998 [pcmcia_socket0] 5
dpm_complete: c1a10998 [pcmcia_socket0] 5
Tested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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In current code, pltfm->als_vmin is set to LM3530_ALS_WINDOW_mV and
pltfm->als_vmax is 0. This does not make sense. I think what we want
here is setting pltfm->als_vmax to LM3530_ALS_WINDOW_mV.
Both als_vmin and als_vmax local variables will be set to
pltfm->als_vmin and pltfm->als_vmax by a few lines latter. Thus also
remove a redundant assignment for als_vmin and als_vmax in this patch.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Shreshtha Kumar Sahu <shreshthakumar.sahu@stericsson.com>
Acked-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Tested-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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fbdev fixes for 3.3
It includes:
- compile fix for fsl-diu-fb
- fix for a suspend/resume issue in atmel_lcdfb
- fix for a suspend/resume issue in OMAP
- workaround for a hardware bug to avoid physical damage in OMAP
- really trivial dead code removal in intelfb
* tag 'fbdev-fixes-for-3.3-1' of git://github.com/schandinat/linux-2.6:
atmel_lcdfb: fix usage of CONTRAST_CTR in suspend/resume
intelfb: remove some dead code
drivers/video: compile fixes for fsl-diu-fb.c
OMAPDSS: HDMI: PHY burnout fix
OMAP: 4430SDP/Panda: add HDMI HPD gpio
OMAP: 4430SDP/Panda: setup HDMI GPIO muxes
OMAPDSS: remove wrong HDMI HPD muxing
OMAP: 4430SDP/Panda: rename HPD GPIO to CT_CP_HPD
OMAP: 4430SDP/Panda: use gpio_free_array to free HDMI gpios
OMAPDSS: use sync versions of pm_runtime_put
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An error was existing in the saving of CONTRAST_CTR register
across suspend/resume.
Signed-off-by: Hubert Feurstein <h.feurstein@gmail.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
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The goto on the line before means the return is unreachable. The goto
also returns -ENODEV so no changes are needed there.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
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fbdev-for-linus
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A hardware bug in the OMAP4 HDMI PHY causes physical damage to the board
if the HDMI PHY is kept powered on when the cable is not connected.
This patch solves the problem by adding hot-plug-detection into the HDMI
IP driver. This is not a real HPD support in the sense that nobody else
than the IP driver gets to know about the HPD events, but is only meant
to fix the HW bug.
The strategy is simple: If the display device is turned off by the user,
the PHY power is set to OFF. When the display device is turned on by the
user, the PHY power is set either to LDOON or TXON, depending on whether
the HDMI cable is connected.
The reason to avoid PHY OFF when the display device is on, but the cable
is disconnected, is that when the PHY is turned OFF, the HDMI IP is not
"ticking" and thus the DISPC does not receive pixel clock from the HDMI
IP. This would, for example, prevent any VSYNCs from happening, and
would thus affect the users of omapdss. By using LDOON when the cable is
disconnected we'll avoid the HW bug, but keep the HDMI working as usual
from the user's point of view.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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omapdss doesn't work properly on system suspend. The problem seems to be
the fact that omapdss uses pm_runtime_put() functions when turning off
the hardware, and when system suspend is in process only sync versions
are allowed.
Using non-sync versions normally and sync versions when suspending would
need rather ugly hacks to convey the information of
suspending/not-suspending to different functions. Optimally the driver
wouldn't even need to care about this, and the PM layer would handle
syncing when suspend is in process.
This patch changes all omapdss's pm_runtime_put calls to
pm_runtime_put_sync. This fixes the suspend problem, and probably the
performance penalty of always using sync versions is negligible.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Kevin Hilman <khilman@ti.com>
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Fix a compiler errors introduced in:
commit ddd3d905436b572ebadc09dcf2d12ca5b37020a0
Author: Timur Tabi <timur@freescale.com>
drivers/video: fsl-diu-fb: merge all allocated data into one block
Signed-off-by: Michael Neuling <mikey@neuling.org>
Acked-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
Cleanups and error path fixes for the new SRP (SCSI RDMA protocol) target.
* tag 'ib-srpt-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
IB/srpt: Don't return freed pointer from srpt_alloc_ioctx_ring()
IB/srpt: Fix ERR_PTR() vs. NULL checking confusion
IB/srpt: Remove unneeded <linux/version.h> include
IB/srpt: Use ARRAY_SIZE() instead of open-coding
IB/srpt: Use DEFINE_SPINLOCK()/LIST_HEAD()
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Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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transport_init_session() and target_fabric_configfs_init() don't
return NULL pointers, they only return ERR_PTRs or valid pointers.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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Signed-off-by: Roland Dreier <roland@purestorage.com>
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Signed-off-by: Roland Dreier <roland@purestorage.com>
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Those lines have two copies.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Thomas Renninger <trenn@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
* 'upstream-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
HID: wiimote: fix invalid power_supply_powers call
HID: wacom: Fix invalid power_supply_powers calls
HID: hyperv: Properly disconnect the input device
HID: usbhid: fix dead lock between open and disconect
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Analogically to d7cb3dbd1 ("HID: wacom: Fix invalid power_supply_powers
calls"), fix also the same occurence in wiimote driver.
Reported-by: przemo@firszt.eu
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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power_supply_powers calls added in 35b4c01e2 ("power_supply: add "powers" links
to self-powered HID devices") have to be called after power device is created.
This patch also fixes the second call - it has to be "ac" instead of "battery"
Signed-off-by: Przemo Firszt <przemo@firszt.eu>
Signed-off-by: Chris Bagwell <chris@cnpbagwell.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into upstream-fixes
Sync with Linus' tree. This is necessary to have a base for
patch that fixes commit 35b4c01e29b ("power_supply: add "powers"
links to self-powered HID devices") which went in through Anton's
tree.
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When we unload the mouse driver, properly disconnect the input device.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reported-by: Fuzhou Chen <fuzhouch@microsoft.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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There is no reason to hold hiddev->existancelock before
calling usb_deregister_dev, so move it out of the lock.
The patch fixes the lockdep warning below.
[ 5733.386271] ======================================================
[ 5733.386274] [ INFO: possible circular locking dependency detected ]
[ 5733.386278] 3.2.0-custom-next-20120111+ #1 Not tainted
[ 5733.386281] -------------------------------------------------------
[ 5733.386284] khubd/186 is trying to acquire lock:
[ 5733.386288] (minor_rwsem){++++.+}, at: [<ffffffffa0011a04>] usb_deregister_dev+0x37/0x9e [usbcore]
[ 5733.386311]
[ 5733.386312] but task is already holding lock:
[ 5733.386315] (&hiddev->existancelock){+.+...}, at: [<ffffffffa0094d17>] hiddev_disconnect+0x26/0x87 [usbhid]
[ 5733.386328]
[ 5733.386329] which lock already depends on the new lock.
[ 5733.386330]
[ 5733.386333]
[ 5733.386334] the existing dependency chain (in reverse order) is:
[ 5733.386336]
[ 5733.386337] -> #1 (&hiddev->existancelock){+.+...}:
[ 5733.386346] [<ffffffff81082d26>] lock_acquire+0xcb/0x10e
[ 5733.386357] [<ffffffff813df961>] __mutex_lock_common+0x60/0x465
[ 5733.386366] [<ffffffff813dfe4d>] mutex_lock_nested+0x36/0x3b
[ 5733.386371] [<ffffffffa0094ad6>] hiddev_open+0x113/0x193 [usbhid]
[ 5733.386378] [<ffffffffa0011971>] usb_open+0x66/0xc2 [usbcore]
[ 5733.386390] [<ffffffff8111a8b5>] chrdev_open+0x12b/0x154
[ 5733.386402] [<ffffffff811159a8>] __dentry_open.isra.16+0x20b/0x355
[ 5733.386408] [<ffffffff811165dc>] nameidata_to_filp+0x43/0x4a
[ 5733.386413] [<ffffffff81122ed5>] do_last+0x536/0x570
[ 5733.386419] [<ffffffff8112300b>] path_openat+0xce/0x301
[ 5733.386423] [<ffffffff81123327>] do_filp_open+0x33/0x81
[ 5733.386427] [<ffffffff8111664d>] do_sys_open+0x6a/0xfc
[ 5733.386431] [<ffffffff811166fb>] sys_open+0x1c/0x1e
[ 5733.386434] [<ffffffff813e7c79>] system_call_fastpath+0x16/0x1b
[ 5733.386441]
[ 5733.386441] -> #0 (minor_rwsem){++++.+}:
[ 5733.386448] [<ffffffff8108255d>] __lock_acquire+0xa80/0xd74
[ 5733.386454] [<ffffffff81082d26>] lock_acquire+0xcb/0x10e
[ 5733.386458] [<ffffffff813e01f5>] down_write+0x44/0x77
[ 5733.386464] [<ffffffffa0011a04>] usb_deregister_dev+0x37/0x9e [usbcore]
[ 5733.386475] [<ffffffffa0094d2d>] hiddev_disconnect+0x3c/0x87 [usbhid]
[ 5733.386483] [<ffffffff8132df51>] hid_disconnect+0x3f/0x54
[ 5733.386491] [<ffffffff8132dfb4>] hid_device_remove+0x4e/0x7a
[ 5733.386496] [<ffffffff812c0957>] __device_release_driver+0x81/0xcd
[ 5733.386502] [<ffffffff812c09c3>] device_release_driver+0x20/0x2d
[ 5733.386507] [<ffffffff812c0564>] bus_remove_device+0x114/0x128
[ 5733.386512] [<ffffffff812bdd6f>] device_del+0x131/0x183
[ 5733.386519] [<ffffffff8132def3>] hid_destroy_device+0x1e/0x3d
[ 5733.386525] [<ffffffffa00916b0>] usbhid_disconnect+0x36/0x42 [usbhid]
[ 5733.386530] [<ffffffffa000fb60>] usb_unbind_interface+0x57/0x11f [usbcore]
[ 5733.386542] [<ffffffff812c0957>] __device_release_driver+0x81/0xcd
[ 5733.386547] [<ffffffff812c09c3>] device_release_driver+0x20/0x2d
[ 5733.386552] [<ffffffff812c0564>] bus_remove_device+0x114/0x128
[ 5733.386557] [<ffffffff812bdd6f>] device_del+0x131/0x183
[ 5733.386562] [<ffffffffa000de61>] usb_disable_device+0xa8/0x1d8 [usbcore]
[ 5733.386573] [<ffffffffa0006bd2>] usb_disconnect+0xab/0x11f [usbcore]
[ 5733.386583] [<ffffffffa0008aa0>] hub_thread+0x73b/0x1157 [usbcore]
[ 5733.386593] [<ffffffff8105dc0f>] kthread+0x95/0x9d
[ 5733.386601] [<ffffffff813e90b4>] kernel_thread_helper+0x4/0x10
[ 5733.386607]
[ 5733.386608] other info that might help us debug this:
[ 5733.386609]
[ 5733.386612] Possible unsafe locking scenario:
[ 5733.386613]
[ 5733.386615] CPU0 CPU1
[ 5733.386618] ---- ----
[ 5733.386620] lock(&hiddev->existancelock);
[ 5733.386625] lock(minor_rwsem);
[ 5733.386630] lock(&hiddev->existancelock);
[ 5733.386635] lock(minor_rwsem);
[ 5733.386639]
[ 5733.386640] *** DEADLOCK ***
[ 5733.386641]
[ 5733.386644] 6 locks held by khubd/186:
[ 5733.386646] #0: (&__lockdep_no_validate__){......}, at: [<ffffffffa00084af>] hub_thread+0x14a/0x1157 [usbcore]
[ 5733.386661] #1: (&__lockdep_no_validate__){......}, at: [<ffffffffa0006b77>] usb_disconnect+0x50/0x11f [usbcore]
[ 5733.386677] #2: (hcd->bandwidth_mutex){+.+.+.}, at: [<ffffffffa0006bc8>] usb_disconnect+0xa1/0x11f [usbcore]
[ 5733.386693] #3: (&__lockdep_no_validate__){......}, at: [<ffffffff812c09bb>] device_release_driver+0x18/0x2d
[ 5733.386704] #4: (&__lockdep_no_validate__){......}, at: [<ffffffff812c09bb>] device_release_driver+0x18/0x2d
[ 5733.386714] #5: (&hiddev->existancelock){+.+...}, at: [<ffffffffa0094d17>] hiddev_disconnect+0x26/0x87 [usbhid]
[ 5733.386727]
[ 5733.386727] stack backtrace:
[ 5733.386731] Pid: 186, comm: khubd Not tainted 3.2.0-custom-next-20120111+ #1
[ 5733.386734] Call Trace:
[ 5733.386741] [<ffffffff81062881>] ? up+0x34/0x3b
[ 5733.386747] [<ffffffff813d9ef3>] print_circular_bug+0x1f8/0x209
[ 5733.386752] [<ffffffff8108255d>] __lock_acquire+0xa80/0xd74
[ 5733.386756] [<ffffffff810808b4>] ? trace_hardirqs_on_caller+0x15d/0x1a3
[ 5733.386763] [<ffffffff81043a3f>] ? vprintk+0x3f4/0x419
[ 5733.386774] [<ffffffffa0011a04>] ? usb_deregister_dev+0x37/0x9e [usbcore]
[ 5733.386779] [<ffffffff81082d26>] lock_acquire+0xcb/0x10e
[ 5733.386789] [<ffffffffa0011a04>] ? usb_deregister_dev+0x37/0x9e [usbcore]
[ 5733.386797] [<ffffffff813e01f5>] down_write+0x44/0x77
[ 5733.386807] [<ffffffffa0011a04>] ? usb_deregister_dev+0x37/0x9e [usbcore]
[ 5733.386818] [<ffffffffa0011a04>] usb_deregister_dev+0x37/0x9e [usbcore]
[ 5733.386825] [<ffffffffa0094d2d>] hiddev_disconnect+0x3c/0x87 [usbhid]
[ 5733.386830] [<ffffffff8132df51>] hid_disconnect+0x3f/0x54
[ 5733.386834] [<ffffffff8132dfb4>] hid_device_remove+0x4e/0x7a
[ 5733.386839] [<ffffffff812c0957>] __device_release_driver+0x81/0xcd
[ 5733.386844] [<ffffffff812c09c3>] device_release_driver+0x20/0x2d
[ 5733.386848] [<ffffffff812c0564>] bus_remove_device+0x114/0x128
[ 5733.386854] [<ffffffff812bdd6f>] device_del+0x131/0x183
[ 5733.386859] [<ffffffff8132def3>] hid_destroy_device+0x1e/0x3d
[ 5733.386865] [<ffffffffa00916b0>] usbhid_disconnect+0x36/0x42 [usbhid]
[ 5733.386876] [<ffffffffa000fb60>] usb_unbind_interface+0x57/0x11f [usbcore]
[ 5733.386882] [<ffffffff812c0957>] __device_release_driver+0x81/0xcd
[ 5733.386886] [<ffffffff812c09c3>] device_release_driver+0x20/0x2d
[ 5733.386890] [<ffffffff812c0564>] bus_remove_device+0x114/0x128
[ 5733.386895] [<ffffffff812bdd6f>] device_del+0x131/0x183
[ 5733.386905] [<ffffffffa000de61>] usb_disable_device+0xa8/0x1d8 [usbcore]
[ 5733.386916] [<ffffffffa0006bd2>] usb_disconnect+0xab/0x11f [usbcore]
[ 5733.386921] [<ffffffff813dff82>] ? __mutex_unlock_slowpath+0x130/0x141
[ 5733.386929] [<ffffffffa0008aa0>] hub_thread+0x73b/0x1157 [usbcore]
[ 5733.386935] [<ffffffff8106a51d>] ? finish_task_switch+0x78/0x150
[ 5733.386941] [<ffffffff8105e396>] ? __init_waitqueue_head+0x4c/0x4c
[ 5733.386950] [<ffffffffa0008365>] ? usb_remote_wakeup+0x56/0x56 [usbcore]
[ 5733.386955] [<ffffffff8105dc0f>] kthread+0x95/0x9d
[ 5733.386961] [<ffffffff813e90b4>] kernel_thread_helper+0x4/0x10
[ 5733.386966] [<ffffffff813e24b8>] ? retint_restore_args+0x13/0x13
[ 5733.386970] [<ffffffff8105db7a>] ? __init_kthread_worker+0x55/0x55
[ 5733.386974] [<ffffffff813e90b0>] ? gs_change+0x13/0x13
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6:
mfd: Avoid twl6040-codec PLL reconfiguration when not needed
mfd: Store twl6040-codec mclk configuration
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Do not reconfigure the PLL in case it has been configured already
with the requested parameters.
In case of different PLL configuration do only the needed changes.
This can save considerable amount of time since we can avoid the
defined protocol (with delays) for the PLL configuration.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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Store the last used mclk configuration for the PLL.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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GPIO fixes for v3.3-rc2
Straight forward bug fixes in this branch. A couple of x86 gpio drivers
missing spinlock initialization, an API change fixup for the samsung driver
and a name typo fix.
* tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6:
gpio: Add missing spin_lock_init in gpio-ml-ioh driver
gpio: Add missing spin_lock_init in gpio-pch driver
gpio: samsung: adapt to changes in gpio specifier translator function declaration
Correct bad gpio naming
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This bug was introduced by commit 54be5663
"gpio-ml-ioh: Support interrupt function" which adds a spinlock to struct
ioh_gpio but never init the spinlock.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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This bug was introduced by commit d568a681
"gpio-pch: add spinlock in suspend/resume processing"
which adds a spinlock to struct pch_gpio but never init the spinlock.
Reported-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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declaration
Commit 15c9a0acc3f7 (of: create of_phandle_args to simplify return of phandle
parsing data) modifies the parameter list of of_xlate function pointer declaration
in gpio_chip. Adapt the gpio specifier translate function for this change.
Reported-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Tested-by: Karol Lewandowski <k.lewandowsk@samsung.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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One of the GPIO names in drivers/gpio/gpio-lpc32xx.c
was bad. Renaming gpi000 -> gpio00
Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
One patch to fix fan detection on NCT6776F.
* tag 'hwmon-fixes-for-3.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (w83627ehf) Fix number of fans for NCT6776F
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NCT6776F can select fan input pins for fans 3 to 5 with a secondary set of
chip register bits. Check that second set of bits in addition to the first set
to detect if fans 3..5 are monitored.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: stable@vger.kernel.org # 3.0+
Acked-by: Jean Delvare <khali@linux-fr.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
arm-soc fixes for 3.3-rc
* A series of OMAP regression fixes for merge window fallout
* Two patches for Davinci, one removes some misdefined clocks, the other
is a regression fix for merge window fallout
* Two patches that makes Broadcom bcmring build again (and removes a
bunch of unused code in the process)
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: bcmring: fix build failure in mach-bcmring/arch.c
ARM: bcmring: remove unused DMA map code
ARM: davinci: update mdio bus name
ARM: OMAP2+: arch/arm/mach-omap2/smartreflex.c: add missing iounmap
ARM: OMAP2+: arch/arm/mach-omap2/devices.c: introduce missing kfree
ARM: OMAP: fix MMC2 loopback clock handling
ARM: OMAP: fix erroneous mmc2 clock change on mmc3 setup
ARM: OMAP2+: GPMC: fix device size setup
ARM: OMAP2+: timer: Fix crash due to wrong arg to __omap_dm_timer_read_counter
ARM: OMAP3: hwmod data: register dss hwmods after dss_core
ARM: OMAP2/3: PRM: fix missing plat/irqs.h build breakage
ARM: OMAP2+: io: fix compilation breakage on 2420-only configs
ARM: OMAP4: hwmod data: Add names for DMIC memory address space
ARM: OMAP3: hwmod data: add SYSC_HAS_ENAWAKEUP for dispc
ARM: OMAP2+: hwmod data: split omap2/3 dispc hwmod class
ARM: davinci: DA850: remove non-existing pll1_sysclk4-7 clocks
ARM: OMAP2: fix regulator warnings
ARM: OMAP2: fix omap3 touchbook kconfig warning
i2c: OMAP: Fix OMAP1 build error
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git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2+: arch/arm/mach-omap2/smartreflex.c: add missing iounmap
ARM: OMAP2+: arch/arm/mach-omap2/devices.c: introduce missing kfree
ARM: OMAP: fix MMC2 loopback clock handling
ARM: OMAP: fix erroneous mmc2 clock change on mmc3 setup
ARM: OMAP2+: GPMC: fix device size setup
ARM: OMAP2+: timer: Fix crash due to wrong arg to __omap_dm_timer_read_counter
ARM: OMAP3: hwmod data: register dss hwmods after dss_core
ARM: OMAP2/3: PRM: fix missing plat/irqs.h build breakage
ARM: OMAP2+: io: fix compilation breakage on 2420-only configs
ARM: OMAP4: hwmod data: Add names for DMIC memory address space
ARM: OMAP3: hwmod data: add SYSC_HAS_ENAWAKEUP for dispc
ARM: OMAP2+: hwmod data: split omap2/3 dispc hwmod class
ARM: OMAP2: fix regulator warnings
ARM: OMAP2: fix omap3 touchbook kconfig warning
i2c: OMAP: Fix OMAP1 build error
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CONFIG_OF is not defined for OMAP1 yet and thus the omap1_defconfig build
generate an error for 3.3-rc1.
drivers/i2c/busses/i2c-omap.c: In function 'omap_i2c_probe':
drivers/i2c/busses/i2c-omap.c:1021:26: error: 'omap_i2c_of_match' undeclared (first use in this function)
drivers/i2c/busses/i2c-omap.c:1021:26: note: each undeclared identifier is reported only once for each function it appears in
Wrap omap_i2c_of_match with of_match_ptr() to prevent compilation error in case of OMAP1 build.
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: i8042 - add Lenovo Ideapad U455 to 'reset' blacklist
Input: serio_raw - return proper result when serio_raw_read fails
Input: document device properties
Input: twl4030_keypad - fix comment (trivial)
Input: gpio_keys - fix struct device declared inside parameter list
Input: evdev - fix variable initialisation
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