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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
"These fix:
- Boot video device detection on dual-GPU Apple systems
- Hotplug fiascos on VGA switcheroo with radeon & nouveau drivers
- Boot hang on Freescale i.MX6 systems
- Excessive "no hotplug settings from platform" warnings
In particular:
Enumeration
- Don't default exclusively to first video device (Bruno Prémont)
PCI device hotplug
- Remove "no hotplug settings from platform" warning (Bjorn Helgaas)
- Add pci_ignore_hotplug() for VGA switcheroo (Bjorn Helgaas)
Freescale i.MX6
- Put LTSSM in "Detect" state before disabling (Lucas Stach)"
* tag 'pci-v3.17-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
vgaarb: Drop obsolete #ifndef
vgaarb: Don't default exclusively to first video device with mem+io
ACPIPHP / radeon / nouveau: Remove acpi_bus_no_hotplug()
PCI: Remove "no hotplug settings from platform" warning
PCI: Add pci_ignore_hotplug() to ignore hotplug events for a device
PCI: imx6: Put LTSSM in "Detect" state before disabling it
MAINTAINERS: Add Lucas Stach as co-maintainer for i.MX6 PCI driver
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* pci/vga:
vgaarb: Drop obsolete #ifndef
vgaarb: Don't default exclusively to first video device with mem+io
* commit '6a73336bde29':
PCI: Remove "no hotplug settings from platform" warning
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We print way too many messages like this:
pci 0000:00:00.0: no hotplug settings from platform
pci 0000:00:00.0: using default PCI settings
This usually happens when the platform doesn't supply an ACPI _HPP method,
but the method is optional, so there's no point in warning about it.
Not only are the messages useless, but we call pci_configure_slot() far too
many times, so they're repeated many times. I'll fix the overuse of
pci_configure_slot() too, but that will wait until the next merge window.
For now, just remove both log messages.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=84391
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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Commit 20cde694027e ("x86, ia64: Move EFI_FB vga_default_device()
initialization to pci_vga_fixup()") moved boot video device detection from
efifb to x86 and ia64 pci/fixup.c.
Remove the left-over #ifndef check that will always match since the
corresponding arch-specific define is gone with above patch.
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Matthew Garrett <matthew.garrett@nebula.com>
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Commit 20cde694027e ("x86, ia64: Move EFI_FB vga_default_device()
initialization to pci_vga_fixup()") moved boot video device detection from
efifb to x86 and ia64 pci/fixup.c.
For dual-GPU Apple computers above change represents a regression as code
in efifb did forcefully override vga_default_device while the merge did not
(vgaarb happens prior to PCI fixup).
To improve on initial device selection by vgaarb (it cannot know if PCI
device not behind bridges see/decode legacy VGA I/O or not), move the
screen_info based check from pci_video_fixup() to vgaarb's init function and
use it to refine/override decision taken while adding the individual PCI
VGA devices. This way PCI fixup has no reason to adjust vga_default_device
anymore but can depend on its value for flagging shadowed VBIOS.
This has the nice benefit of removing duplicated code but does introduce a
#if defined() block in vgaarb. Not all architectures have screen_info and
would cause compile to fail without it.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=84461
Reported-and-Tested-By: Andreas Noever <andreas.noever@gmail.com>
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Matthew Garrett <matthew.garrett@nebula.com>
CC: stable@vger.kernel.org # v3.5+
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* pci/hotplug-vga:
ACPIPHP / radeon / nouveau: Remove acpi_bus_no_hotplug()
PCI: Add pci_ignore_hotplug() to ignore hotplug events for a device
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Revert parts of f244d8b623da ("ACPIPHP / radeon / nouveau: Fix VGA
switcheroo problem related to hotplug").
A previous commit 5493b31f0b55 ("PCI: Add pci_ignore_hotplug() to ignore
hotplug events for a device") added equivalent functionality implemented in
a different way for both acpiphp and pciehp.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Acked-by: Rajat Jain <rajatxjain@gmail.com>
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Powering off a hot-pluggable device, e.g., with pci_set_power_state(D3cold),
normally generates a hot-remove event that unbinds the driver.
Some drivers expect to remain bound to a device even while they power it
off and back on again. This can be dangerous, because if the device is
removed or replaced while it is powered off, the driver doesn't know that
anything changed. But some drivers accept that risk.
Add pci_ignore_hotplug() for use by drivers that know their device cannot
be removed. Using pci_ignore_hotplug() tells the PCI core that hot-plug
events for the device should be ignored.
The radeon and nouveau drivers use this to switch between a low-power,
integrated GPU and a higher-power, higher-performance discrete GPU. They
power off the unused GPU, but they want to remain bound to it.
This is a reimplementation of f244d8b623da ("ACPIPHP / radeon / nouveau:
Fix VGA switcheroo problem related to hotplug") but extends it to work with
both acpiphp and pciehp.
This fixes a problem where systems with dual GPUs using the radeon drivers
become unusable, freezing every few seconds (see bugzillas below). The
resume of the radeon device may also fail, e.g.,
This fixes problems on dual GPU systems where the radeon driver becomes
unusable because of problems while suspending the device, as in bug 79701:
[drm] radeon: finishing device.
radeon 0000:01:00.0: Userspace still has active objects !
radeon 0000:01:00.0: ffff8800cb4ec288 ffff8800cb4ec000 16384 4294967297 force free
...
WARNING: CPU: 0 PID: 67 at /home/apw/COD/linux/drivers/gpu/drm/radeon/radeon_gart.c:234 radeon_gart_unbind+0xd2/0xe0 [radeon]()
trying to unbind memory from uninitialized GART !
or while resuming it, as in bug 77261:
radeon 0000:01:00.0: ring 0 stalled for more than 10158msec
radeon 0000:01:00.0: GPU lockup ...
radeon 0000:01:00.0: GPU pci config reset
pciehp 0000:00:01.0:pcie04: Card not present on Slot(1-1)
radeon 0000:01:00.0: GPU reset succeeded, trying to resume
*ERROR* radeon: dpm resume failed
radeon 0000:01:00.0: Wait for MC idle timedout !
Link: https://bugzilla.kernel.org/show_bug.cgi?id=77261
Link: https://bugzilla.kernel.org/show_bug.cgi?id=79701
Reported-by: Shawn Starr <shawn.starr@rogers.com>
Reported-by: Jose P. <lbdkmjdf@sharklasers.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Rajat Jain <rajatxjain@gmail.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Dave Airlie <airlied@redhat.com>
CC: stable@vger.kernel.org # v3.15+
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This fixes a boot hang observed when the bootloader already enabled the
PCIe link for its own use. The fundamental problem is that Freescale
forgot to wire up the core reset, so software doesn't have a sane way to
get the core into a defined state.
According to the DW PCIe core reference manual, configuration of the core
may only happen when the LTSSM is disabled, so this is one of the first
things we need to do. Apparently this isn't safe to do when the LTSSM is in
any state other than "detect" as we observe an instant machine hang when
trying to do so while the link is already up.
As a workaround, force LTSSM into detect state right before hitting the
disable switch. There is still a race window because the LTSSM may
transition out of "detect" before we can disable it, but it's the best
we can do for now.
[bhelgaas: mention race window]
Link: http://lkml.kernel.org/r/1406830565-23450-3-git-send-email-l.stach@pengutronix.de
Reported-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Tim Harvey <tharvey@gateworks.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is a set of three fixes.
One represents a nasty shared tag map regression (another inverted
condition) caused by recent SCSI MQ patches, one is a longstanding
potential buffer overrun in the iscsi data buffer and the final one is
a use after free for the rare bidirectional commands"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
[SCSI] fix for bidi use after free
[SCSI] fix regression that accidentally disabled block-based tcq
[SCSI] libiscsi: fix potential buffer overrun in __iscsi_conn_send_pdu
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When ending a bi-directionional SCSI request, blk_finish_request()
cleans up and frees the request, but scsi_release_bidi_buffers() tries
to indirect through the request to find it's data buffers. This causes
a panic due to a null pointer dereference.
Move the call to scsi_release_bidi_buffers() before the call to
blk_finish_request().
Signed-off-by: Daniel Gryniewicz <dang@linuxbox.com>
Reviewed-by: Webb Scales <webbnh@hp.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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This patches fixes a potential buffer overrun in __iscsi_conn_send_pdu.
This function is used by iscsi drivers and userspace to send iscsi PDUs/
commands. For login commands, we have a set buffer size. For all other
commands we do not support data buffers.
This was reported by Dan Carpenter here:
http://www.spinics.net/lists/linux-scsi/msg66838.html
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: stable@vger.kernel.org
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"Misc fixes:
EFI fixes, a build fix, a page table dumping (debug) fix and a clang
build fix"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi/arm64: Fix fdt-related memory reservation
x86/mm: Apply the section attribute to the variable, not its type
x86/efi: Fixup GOT in all boot code paths
x86/efi: Only load initrd above 4g on second try
x86-64, ptdump: Mark espfix area only if existent
x86, irq: Fix build error caused by 9eabc99a635a77cbf09
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git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi into x86/urgent
Pull EFI fixes from Matt Fleming:
* Fix early boot regression affecting x86 EFI boot stub when loading
initrds above 4GB - Yinghai Lu
* Relocate GOT entries in the x86 EFI boot stub now that we have
symbols with global visibility - Matt Fleming
* fdt memory reservation fix for arm64 - Mark Salter
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Commit 86c8b27a01cf:
"arm64: ignore DT memreserve entries when booting in UEFI mode
prevents early_init_fdt_scan_reserved_mem() from being called for
arm64 kernels booting via UEFI. This was done because the kernel
will use the UEFI memory map to determine reserved memory regions.
That approach has problems in that early_init_fdt_scan_reserved_mem()
also reserves the FDT itself and any node-specific reserved memory.
By chance of some kernel configs, the FDT may be overwritten before
it can be unflattened and the kernel will fail to boot. More subtle
problems will result if the FDT has node specific reserved memory
which is not really reserved.
This patch has the UEFI stub remove the memory reserve map entries
from the FDT as it does with the memory nodes. This allows
early_init_fdt_scan_reserved_mem() to be called unconditionally
so that the other needed reservations are made.
Signed-off-by: Mark Salter <msalter@redhat.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fix from Mark Brown:
"Fix some leaked OF node references in regulator drivers that have been
left over following a fix on a fix to the reference counting"
* tag 'regulator-v3.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: remove unnecessary of_node_get() to parent
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These of_node_get() were added to balance refcount decrements inside of
of_find_node_by_name().
See: commit c92f5dd2c42f ("regulator: Add missing of_node_put()")
However of_find_node_by_name() was then replaced by of_get_child_by_name(),
which doesn't call of_node_put() against its input parameter.
So, need to remove these unnecessary of_node_get() calls.
Signed-off-by: Guodong Xu <guodong.xu@linaro.org>
Reviewed-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A few driver specific fixes for v3.17:
- Fix davinci so that GPIO chip selects work with deferred probe of
GPIOs (which could happen in production depending on kernel config)
plus one incremental stylistic fix to that.
- Several fixes for the newly introduced rockchip driver that came up
in wider testing of the device.
- A couple of small things in the sirf driver, one bug that would
stop DMA transfers working and another update to follow the
documented procedure in the datasheet.
- Fix some memory leaks with devm_kzalloc() being used outside of the
device bind path"
* tag 'spi-v3.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: davinci: remove empty function davinci_spi_cleanup
spi: davinci: request cs_gpio's from probe
spi/pl022: Fix error message
spi/rockchip: Mark DMA as optional
spi/rockchip: Don't warn if SPI is busy but disabled
spi/rockchip: Fix the wait_for_idle() timeout
spi: sirf: add fifo reset/start for cmd transfer
spi: sirf: enable RX_IO_DMA_INT interrupt
spi: dw: Don't use devm_kzalloc in master->setup callback
spi: fsl: Don't use devm_kzalloc in master->setup callback
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'spi/fix/fsl', 'spi/fix/pl022', 'spi/fix/rockchip' and 'spi/fix/sirf' into spi-linus
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for command mode spi transfer, HW spec requires to do fifo reset work to
clear FIFO status.
Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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in spi interrupt handler, we need check RX_IO_DMA status to ensure
rx fifo have received the specify count data.
if not set, the while statement in spi isr function will keep loop,
at last, make the kernel hang.
[The code is actually there in the interrupt handler but apparently it
needs the interrupt unmasking so the handler sees the status -- broonie]
Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
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The reference manual from Rockchip claims this about the BSF (SPI Busy
Flag):
* 0 - SPI is idle or disabled
* 1 - SPI is actively transferring data
The above doesn't quite appear to be true. Specifically I found the
busy bit set when SPI was disabled. Let's change the WARN_ON() so we
only check the busy bit if the controller was enabled.
Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
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The wait_for_idle() could get unlucky and timeout too quickly.
Specifically, the old calculation was effectively:
timeout = jiffies + 1;
if (jiffies >= timeout) print warning;
From the above it should be obvious that if jiffies ticks in just the
wrong place then we'll have an effective timeout of 0.
Fix this by effectively changing the above ">=" to a ">". That gives
us an extra jiffy to finish.
Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
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This patch fixes an error message typo ("not" missing).
Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
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device_add() expects that any memory allocated via devm_* API is only
done in the device's probe function.
Fix below boot warning:
[ 3.092348] WARNING: at drivers/base/dd.c:286
[ 3.096637] Modules linked in:
[ 3.099697] CPU: 0 PID: 25 Comm: kworker/u2:1 Tainted: G W 3.16.1-s3k-drv-999-svn5771_knld-999 #158
[ 3.109610] Workqueue: deferwq deferred_probe_work_func
[ 3.114736] task: c787f020 ti: c790c000 task.ti: c790c000
[ 3.120062] NIP: c01df158 LR: c01df144 CTR: 00000000
[ 3.124983] REGS: c790db30 TRAP: 0700 Tainted: G W (3.16.1-s3k-drv-999-svn5771_knld-999)
[ 3.134162] MSR: 00029032 <EE,ME,IR,DR,RI> CR: 22002082 XER: 20000000
[ 3.140703]
[ 3.140703] GPR00: 00000001 c790dbe0 c787f020 00000044 00000054 00000308 c056da0e 20737069
[ 3.140703] GPR08: 33323736 000ebfe0 00000308 000ebfdf 22002082 00000000 c046c5a0 c046c608
[ 3.140703] GPR16: c046c614 c046c620 c046c62c c046c638 c046c648 c046c654 c046c68c c046c6c4
[ 3.140703] GPR24: 00000000 00000000 00000003 c0401aa0 c0596638 c059662c c054e7a8 c7996800
[ 3.170102] NIP [c01df158] driver_probe_device+0xf8/0x334
[ 3.175431] LR [c01df144] driver_probe_device+0xe4/0x334
[ 3.180633] Call Trace:
[ 3.183093] [c790dbe0] [c01df144] driver_probe_device+0xe4/0x334 (unreliable)
[ 3.190147] [c790dc10] [c01dd15c] bus_for_each_drv+0x7c/0xc0
[ 3.195741] [c790dc40] [c01df5fc] device_attach+0xcc/0xf8
[ 3.201076] [c790dc60] [c01dd6d4] bus_probe_device+0xb4/0xc4
[ 3.206666] [c790dc80] [c01db9f8] device_add+0x270/0x564
[ 3.211923] [c790dcc0] [c0219e84] spi_add_device+0xc0/0x190
[ 3.217427] [c790dce0] [c021a79c] spi_register_master+0x720/0x834
[ 3.223455] [c790dd40] [c021cb48] of_fsl_spi_probe+0x55c/0x614
[ 3.229234] [c790dda0] [c01e0d2c] platform_drv_probe+0x30/0x74
[ 3.234987] [c790ddb0] [c01df18c] driver_probe_device+0x12c/0x334
[ 3.241008] [c790dde0] [c01dd15c] bus_for_each_drv+0x7c/0xc0
[ 3.246602] [c790de10] [c01df5fc] device_attach+0xcc/0xf8
[ 3.251937] [c790de30] [c01dd6d4] bus_probe_device+0xb4/0xc4
[ 3.257536] [c790de50] [c01de9d8] deferred_probe_work_func+0x98/0xe0
[ 3.263816] [c790de70] [c00305b8] process_one_work+0x18c/0x440
[ 3.269577] [c790dea0] [c0030a00] worker_thread+0x194/0x67c
[ 3.275105] [c790def0] [c0039198] kthread+0xd0/0xe4
[ 3.279911] [c790df40] [c000c6d0] ret_from_kernel_thread+0x5c/0x64
[ 3.285970] Instruction dump:
[ 3.288900] 80de0000 419e01d0 3b7b0038 3c60c046 7f65db78 38635264 48211b99 813f00a0
[ 3.296559] 381f00a0 7d290278 3169ffff 7c0b4910 <0f000000> 93df0044 7fe3fb78 4bfffd4d
Reported-by: leroy christophe <christophe.leroy@c-s.fr>
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Tested-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
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device_add() expects that any memory allocated via devm_* API is only
done in the device's probe function.
Fix below boot warning:
WARNING: CPU: 1 PID: 1 at drivers/base/dd.c:286 driver_probe_device+0x2b4/0x2f4()
Modules linked in:
CPU: 1 PID: 1 Comm: swapper/0 Not tainted 3.16.0-10474-g835c90b-dirty #160
[<c0016364>] (unwind_backtrace) from [<c001251c>] (show_stack+0x20/0x24)
[<c001251c>] (show_stack) from [<c04eaefc>] (dump_stack+0x7c/0x98)
[<c04eaefc>] (dump_stack) from [<c0023d4c>] (warn_slowpath_common+0x78/0x9c)
[<c0023d4c>] (warn_slowpath_common) from [<c0023d9c>] (warn_slowpath_null+0x2c/0x34)
[<c0023d9c>] (warn_slowpath_null) from [<c0302c60>] (driver_probe_device+0x2b4/0x2f4)
[<c0302c60>] (driver_probe_device) from [<c0302d90>] (__device_attach+0x50/0x54)
[<c0302d90>] (__device_attach) from [<c0300e60>] (bus_for_each_drv+0x54/0x9c)
[<c0300e60>] (bus_for_each_drv) from [<c0302958>] (device_attach+0x84/0x90)
[<c0302958>] (device_attach) from [<c0301f10>] (bus_probe_device+0x94/0xb8)
[<c0301f10>] (bus_probe_device) from [<c03000c0>] (device_add+0x434/0x4fc)
[<c03000c0>] (device_add) from [<c0342dd4>] (spi_add_device+0x98/0x164)
[<c0342dd4>] (spi_add_device) from [<c03444a4>] (spi_register_master+0x598/0x768)
[<c03444a4>] (spi_register_master) from [<c03446b4>] (devm_spi_register_master+0x40/0x80)
[<c03446b4>] (devm_spi_register_master) from [<c0346214>] (dw_spi_add_host+0x1a8/0x258)
[<c0346214>] (dw_spi_add_host) from [<c0346920>] (dw_spi_mmio_probe+0x1d4/0x294)
[<c0346920>] (dw_spi_mmio_probe) from [<c0304560>] (platform_drv_probe+0x3c/0x6c)
[<c0304560>] (platform_drv_probe) from [<c0302a98>] (driver_probe_device+0xec/0x2f4)
[<c0302a98>] (driver_probe_device) from [<c0302d3c>] (__driver_attach+0x9c/0xa0)
[<c0302d3c>] (__driver_attach) from [<c0300f0c>] (bus_for_each_dev+0x64/0x98)
[<c0300f0c>] (bus_for_each_dev) from [<c0302518>] (driver_attach+0x2c/0x30)
[<c0302518>] (driver_attach) from [<c0302134>] (bus_add_driver+0xdc/0x1f4)
[<c0302134>] (bus_add_driver) from [<c03035c8>] (driver_register+0x88/0x104)
[<c03035c8>] (driver_register) from [<c030445c>] (__platform_driver_register+0x58/0x6c)
[<c030445c>] (__platform_driver_register) from [<c0700f00>] (dw_spi_mmio_driver_init+0x18/0x20)
[<c0700f00>] (dw_spi_mmio_driver_init) from [<c0008914>] (do_one_initcall+0x90/0x1d4)
[<c0008914>] (do_one_initcall) from [<c06d7d90>] (kernel_init_freeable+0x178/0x248)
[<c06d7d90>] (kernel_init_freeable) from [<c04e687c>] (kernel_init+0x18/0xfc)
[<c04e687c>] (kernel_init) from [<c000ecd8>] (ret_from_fork+0x14/0x20)
Reported-by: Thor Thayer <tthayer@opensource.altera.com>
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
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Remove empty function davinci_spi_cleanup().
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Now CS GPIOs are requested from struct spi_master.setup() callback
and that causes failures when Client SPI device is getting accessed
through SPIDEV driver. The failure happens, because .setup() callback
may be called many times from IOCTL handler and when it's called
second time gpio_request() will fail and return -EBUSY.
Hence, fix it by moving CS GPIOs requesting code in .probe().
Reported-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux
Pull virtio fixes from Rusty Russell:
"virtio-rng corner case fixes, with cc:stable.
Survived a few days in linux-next"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
virtio-rng: skip reading when we start to remove the device
virtio-rng: fix stuck of hot-unplugging busy device
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Before we really unregister the hwrng device, reading will get stuck if
the virtio device is reset. We should return error for reading when we
start to remove the device.
Signed-off-by: Amos Kong <akong@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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When we try to hot-remove a busy virtio-rng device from QEMU monitor,
the device can't be hot-removed. Because virtio-rng driver hangs at
wait_for_completion_killable().
This patch exits the waiting by completing have_data completion before
unregistering, resets data_avail to avoid the hwrng core use wrong
buffer bytes.
Signed-off-by: Amos Kong <akong@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap fix from Mark Brown:
"Fix registers file in debugfs
Ensure that the mode reported for the registers file in debugfs is
accurate by marking it as read only when the define to enable writes
has not been set. This is on the edge of being a bug fix but it's
debugfs and it makes it much easier for users to spot what's going
wrong when they forget to enable writeability"
* tag 'regmap-v3.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: Fix debugfs-file 'registers' mode
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The macro "REGMAP_ALLOW_WRITE_DEBUGFS" can be used to enable write
support on the registers file in the debugfs. The mode of the file is
fixed to 0400 so it is not possible to write the file ever.
This patch fixes the mode by setting it to the correct value depending
on the macro.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
"A few quirks for i8042/AT keyboards and a small device tree doc fix
for Atmel Touchscreens"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: atmel_mxt_ts - fix merge in DT documentation
Input: i8042 - also set the firmware id for MUXed ports
Input: i8042 - add nomux quirk for Avatar AVIU-145A6
Input: i8042 - add Fujitsu U574 to no_timeout dmi table
Input: atkbd - do not try 'deactivate' keyboard on any LG laptops
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So that firmware-id matching can be used with multiplexed aux ports too.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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The sys_vendor / product_name are somewhat generic unfortunately, so this
may lead to some false positives. But nomux usually does no harm, where as
not having it clearly is causing problems on the Avatar AVIU-145A6.
https://bugzilla.kernel.org/show_bug.cgi?id=77391
Cc: stable@vger.kernel.org
Reported-by: Hugo P <saurosii@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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https://bugzilla.kernel.org/show_bug.cgi?id=69731
Cc: stable@vger.kernel.org
Reported-by: Jason Robinson <mail@jasonrobinson.me>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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We are getting more and more reports about LG laptops not having
functioning keyboard if we try to deactivate keyboard during probe.
Given that having keyboard deactivated is merely "nice to have"
instead of a hard requirement for probing, let's disable it on all
LG boxes instead of trying to hunt down particular models.
This change is prompted by patches trying to add "LG Electronics"/"ROCKY"
and "LG Electronics"/"LW60-F27B" to the DMI list.
https://bugzilla.kernel.org/show_bug.cgi?id=77051
Cc: stable@vger.kernel.org
Reported-by: Jaime Velasco Juan <jsagarribay@gmail.com>
Reported-by: Georgios Tsalikis <georgios@tsalikis.net>
Tested-by: Jaime Velasco Juan <jsagarribay@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs fixes from Al Viro:
"double iput() on failure exit in lustre, racy removal of spliced
dentries from ->s_anon in __d_materialise_dentry() plus a bunch of
assorted RCU pathwalk fixes"
The RCU pathwalk fixes end up fixing a couple of cases where we
incorrectly dropped out of RCU walking, due to incorrect initialization
and testing of the sequence locks in some corner cases. Since dropping
out of RCU walk mode forces the slow locked accesses, those corner cases
slowed down quite dramatically.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
be careful with nd->inode in path_init() and follow_dotdot_rcu()
don't bugger nd->seq on set_root_rcu() from follow_dotdot_rcu()
fix bogus read_seqretry() checks introduced in b37199e
move the call of __d_drop(anon) into __d_materialise_unique(dentry, anon)
[fix] lustre: d_make_root() does iput() on dentry allocation failure
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double-free is a bad thing
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller:
"The most important patch is a new Light Weigth Syscall (LWS) for 8,
16, 32 and 64 bit atomic CAS operations which is required in order to
be able to implement the atomic gcc builtins on our platform.
Other than that, we wire up the seccomp, getrandom and memfd_create
syscalls, fixes a minor off-by-one bug and a wrong printk string"
* 'parisc-3.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Implement new LWS CAS supporting 64 bit operations.
parisc: Wire up seccomp, getrandom and memfd_create syscalls
parisc: dino: fix %d confusingly prefixed with 0x in format string
parisc: sys_hpux: NUL terminator is one past the end
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Signed-off-by: Hans Wennborg <hans@hanshq.net>
Signed-off-by: Helge Deller <deller@gmx.de>
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Pull ntb driver bugfixes from Jon Mason:
"NTB driver fixes for queue spread and buffer alignment. Also, update
to MAINTAINERS to reflect new e-mail address"
* tag 'ntb-3.17' of git://github.com/jonmason/ntb:
ntb: Add alignment check to meet hardware requirement
MAINTAINERS: update NTB info
NTB: correct the spread of queues over mw's
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The NTB translate register must have the value to be BAR size aligned.
This alignment check make sure that the DMA memory allocated has the
proper alignment. Another requirement for NTB to function properly with
memory window BAR size greater or equal to 4M is to use the CMA feature
in 3.16 kernel with the appropriate CONFIG_CMA_ALIGNMENT and
CONFIG_CMA_SIZE_MBYTES set.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
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The detection of an uneven number of queues on the given memory windows
was not correct. The mw_num is zero based and the mod should be
division to spread them evenly over the mw's.
Signed-off-by: Jon Mason <jon.mason@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull ARM irq chip fixes from Thomas Gleixner:
"Another pile of ARM specific irq chip fixlets:
- off by one bugs in the crossbar driver
- missing annotations
- a bunch of "make it compile" updates
I pulled the lot today from Jason, but it has been in -next for at
least a week"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip: gic-v3: Declare rdist as __percpu pointer to __iomem pointer
irqchip: gic: Make gic_default_routable_irq_domain_ops static
irqchip: exynos-combiner: Fix compilation error on ARM64
irqchip: crossbar: Off by one bugs in init
irqchip: gic-v3: Tag all low level accessors __maybe_unused
irqchip: gic-v3: Only define gic_peek_irq() when building SMP
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git://git.infradead.org/users/jcooper/linux into irq/urgent
irqchip fixes for v3.17 from Jason Cooper
- GIC/GICV3: Various fixlets
- crossbar: Fix off-by-one bug
- exynos-combiner: Fix arm64 build error
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The __percpu __iomem annotations on the rdist base are contradictory
and confuse static checkers such as sparse.
This patch fixes the anotations so that rdist is described as a __percpu
pointer to an __iomem pointer.
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Link: https://lkml.kernel.org/r/1409062410-25891-9-git-send-email-will.deacon@arm.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
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The internal irq domain ops for the GIC are not used directly anywhere
else, so make them static. This gets rid of a sparse warning on the
file.
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Link: https://lkml.kernel.org/r/1409062410-25891-8-git-send-email-will.deacon@arm.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
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The following compilation error occurs on 64-bit Exynos7 SoC:
drivers/irqchip/exynos-combiner.c: In function ‘combiner_irq_domain_map’:
drivers/irqchip/exynos-combiner.c:162:2: error: implicit declaration of function ‘set_irq_flags’ [-Werror=implicit-function-declaration]
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
^
drivers/irqchip/exynos-combiner.c:162:21: error: ‘IRQF_VALID’ undeclared (first use in this function)
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
^
drivers/irqchip/exynos-combiner.c:162:21: note: each undeclared identifier is reported only once for each function it appears in
drivers/irqchip/exynos-combiner.c:162:34: error: ‘IRQF_PROBE’ undeclared (first use in this function)
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
Fix the build error by including linux/interrupt.h.
Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Link: https://lkml.kernel.org/r/1409722329-18309-1-git-send-email-ch.naveen@samsung.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
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