No longer create a work item to clean each execlist queue item.
Instead, move retired execlist requests to a queue and clean up the
items during retire_requests.
v2: Fix legacy ring path broken during overzealous cleanup
v3: Update idle detection to take execlists queue into account
v4: Grab execlist lock when checking queue state
v5: Fix leaking requests by freeing in execlists_retire_requests.
Issue: VIZ-4274
Signed-off-by: Thomas Daniel <thomas.daniel@intel.com>
Reviewed-by: Deepak S <deepak.s@linux.intel.com>
Reviewed-by: Akash Goel <akash.goels@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
So with all the code movement and extraction in intel_pm.c in -next
git is hopelessly confused with
commit 2208d655a9
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Fri Nov 14 09:25:29 2014 +0100
drm/i915: drop WaSetupGtModeTdRowDispatch:snb
from -fixes. Worse even small changes in -next move around the
conflict context so rerere is equally useless. Let's just backmerge
and be done with it.
Conflicts:
drivers/gpu/drm/i915/i915_drv.c
drivers/gpu/drm/i915/intel_pm.c
Except for git getting lost no tricky conflicts really.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
After the previous patch RPS disabling doesn't depend any more on the
first level interrupts being disabled, so we can move it everywhere
earlier. Doing so let's us think about the uninitialization steps
afterwards independently of any asynchronous RPS events that can happen
atm. It also makes the system/runtime suspend time RPS disabling more
uniform. Finally this gets rid of the WARN in
intel_suspend_gt_powersave(), which we can hit if a final RPS work runs
after we disabled the first level interrupts.
Testcase: igt/pm_rpm
Reference: https://bugs.freedesktop.org/show_bug.cgi?id=82939
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
When disabling the RPS interrupts there is a tricky dependency between
the thread disabling the interrupts, the RPS interrupt handler and the
corresponding RPS work. The RPS work can reenable the interrupts, so
there is no straightforward order in the disabling thread to (1) make
sure that any RPS work is flushed and to (2) disable all RPS
interrupts. Currently this is solved by masking the interrupts using two
separate mask registers (first level display IMR and PM IMR) and doing
the disabling when all first level interrupts are disabled.
This works, but the requirement to run with all first level interrupts
disabled is unnecessary making the suspend / unload time ordering of RPS
disabling wrt. other unitialization steps difficult and error prone.
Removing this restriction allows us to disable RPS early during suspend
/ unload and forget about it for the rest of the sequence. By adding a
more explicit method for avoiding the above race, it also becomes easier
to prove its correctness. Finally currently we can hit the WARN in
snb_update_pm_irq(), when a final RPS work runs with the first level
interrupts already disabled. This won't lead to any problem (due to the
separate interrupt masks), but with the change in this and the next
patch we can get rid of the WARN, while leaving it in place for other
scenarios.
To address the above points, add a new RPS interrupts_enabled flag and
use this during RPS disabling to avoid requeuing the RPS work and
reenabling of the RPS interrupts. Since the interrupt disabling happens
now in intel_suspend_gt_powersave(), we will disable RPS interrupts
explicitly during suspend (and not just through the first level mask),
but there is no problem doing so, it's also more consistent and allows
us to unify more of the RPS disabling during suspend and unload time in
the next patch.
v2/v3:
- rebase on patch "drm/i915: move rps irq disable one level up" in the
patchset
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Atm we first enable the RPS interrupts then we clear any pending ones.
By this we could lose an interrupt arriving after we unmasked it. This
may not be a problem as the caller should handle such a race, but logic
still calls for the opposite order. Also we can delay enabling the
interrupts until after all the RPS initialization is ready with the
following order:
1. disable left-over RPS (earlier via intel_uncore_sanitize)
2. clear any pending RPS interrupts
3. initialize RPS
4. enable RPS interrupts
This also allows us to do the 2. and 4. step the same way for all
platforms, so let's follow this order to simplifying things.
Also make sure any queued interrupts are also cleared.
v2:
- rebase on the GEN9 patches where we don't support RPS yet, so we
musn't enable RPS interrupts on it (Paulo)
v3:
- avoid enabling RPS interrupts on GEN>9 too (Paulo)
- clarify the RPS init sequence in the log message (Chris)
- add POSTING_READ to gen6_reset_rps_interrupts() (Paulo)
- WARN if any PM_IIR bits are set in gen6_enable_rps_interrupts()
(Paulo)
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
We disable the RPS interrupts for all platforms at the same spot, so
move it one level up in the callstack to simplify things.
No functional change.
v2:
- rebase on the GEN9 patches where RPS isn't supported yet, so we don't
need to disable RPS interrupts on it (Paulo)
v3:
- avoid disabling the interrupts on GEN>9 too (Paulo)
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This extends
commit 132f3f1767
Author: Imre Deak <imre.deak@intel.com>
Date: Mon Nov 10 15:34:33 2014 +0200
drm/i915: WARN if we receive any gen9 rps interrupts
to GEN>9 platforms as suggested by Paulo.
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
When using the universal plane interface, the source rectangle
coordinates define the panning offset for the primary plane, which needs
to be stored in crtc->{x,y}. The original universal plane code
negelected to set these panning offset fields, which was partially
remedied in:
commit ccc759dc2a
Author: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Date: Wed Sep 24 14:20:22 2014 -0300
drm/i915: Merge of visible and !visible paths for primary planes
However the plane source coordinates are provided in 16.16 fixed point
format and the above commit forgot to convert back to integer
coordinates before saving the values. When we replace
intel_pipe_set_base() with plane->funcs->update_plane() in a future
patch, this bug becomes visible via the set_config entrypoint as well as
update_plane.
Cc: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Testcase: igt/kms_plane
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Just like we do in the HDMI code, set the infoframe flag if we detect
that infoframes are enabled.
v2: check for actual infoframe status as in hdmi code (Daniel)
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
In sandybridge_pcode_read and sandybridge_pcode_write,
extend the mbox parameter from u8 to u32.
On Haswell and Sandybridge, bits 7:0 encode the mailbox
command and bits 28:8 are used for address control for
specific commands.
Based on suggestion from Ville Syrjälä.
Signed-off-by: Tom O'Rourke <Tom.O'Rourke@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
For whatever reasons this can happen. For real testcases the test will
notice the -EIO and fall over, but we also have some testcases that
just read all debugfs files. And that shouldn't cause dmesg spam.
So tune it down a bit so that we still have the information for
debugging. And change the errno so that real testcases can easily
differentiate.
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=84890
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
With multiple rings, we may continue to render on the blitter whilst
executing an infinite shader on the render ring. As we currently, rearm
the timer with each execbuf, in this scenario the hangcheck will never
fire and we will never detect the lockup on the render ring. Instead,
only arm the timer once per hangcheck, so that hangcheck runs more
frequently.
v2: Rearrange code to avoid triggering a BUG_ON in add_timer from
softirq context.
Testcase: igt/gem_reset_stats/defer-hangcheck*
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=86225
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This goes back to
commit 362b8af7ad
Author: Ben Widawsky <benjamin.widawsky@intel.com>
Date: Thu Jan 30 00:19:38 2014 -0800
drm/i915: Move per ring error state to ring_error
Spotted while reading error states.
Cc: Ben Widawsky <benjamin.widawsky@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Indicate the monitor has been disconnected on disable.
The regression has been introduced in
commit 5fad84a753
Author: Jani Nikula <jani.nikula@intel.com>
Date: Tue Nov 4 10:30:23 2014 +0200
drm/i915: rewrite hsw/bdw audio codec enable/disable sequences
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=86424
Cc: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The lack of a break here wasn't for falling through to some other
important code, so made me do a double take. Add a break just to make
things a little less confusing.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
kmap never fails.
Spotted-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Arun Siluvery <arun.siluvery@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
When invalid cloning configurations were detected during modeset, we
never copied the error code into the return value variable, leading us
to return 0 (success) to userspace.
This regression has been introduced in
commit 50f5275698
Author: Jesse Barnes <jbarnes@virtuousgeek.org>
Date: Fri Nov 7 13:11:00 2014 -0800
drm/i915: use compute_config in set_config v4
Testcase: igt/kms_setmode
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=86226
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
On SKL DPLL0 is used to derive CDCLK but can also be used to drive an
eDP port (as long as we don't want SSC). DPLL0 is special enough to not
be handled by the shared DPLL framework (drives CDCLK, not supposed to
enable the HDMI mode), So we need to compute the configuration
separately from the other DPLLs.
Note that we don't need to reprogram DPLL0 (which would mean bringing
down CDCLK) to support the various eDP 1.3 link rates as they all share
the same VCO (8100).
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Let's document PSR a bit. No functional changes.
v2: Add actual DocBook entry and accept Daniel's improvements.
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
No functional changes. Just cleaning and reorganizing it.
v2: Rebase it puting it to begin of psr rework. This helps to blame easily
at least latest changes.
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
No functional change. Just making it public for use outside intel_dp.c
Allowing split psr functions.
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
GEN6_GT_THREAD_STATUS_REG doesn't seem to exist on VLV. Reads just give
0x0 no matter what the state of the render and media wells.
There was also some hint in the Gunit HAS that thread status not being
needed on VLV, and hence dropped when bringing stuff over from the IVB
design. Not really a definite comment about the specific register itself
though.
Also the w/a itself is no longer listed for VLV in the database. It was
there some time ago in the past, but I guess someone figured out the
mistake and dropped it.
So let's just drop it from the code as well.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Deepak S<deepak.s@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Bits [18:16] of GEN6_GT_THREAD_STATUS_REG have always had the same
meaning since SNB. So treating them as something special for HSW doesn't
make sense to me.
Also the bits *seem* to work exactly the same way on IVB, HSW GT2 and
HSW GT3. At least intel_reg_read gives the identical results on all
platforms with and without forcewake.
Also the HSW PM guide rev 0.99 (ww05 2013) doesn't say anything about
those bits. It just says to poll for bits [2:0]. As does the more recent
BDW PM guide.
So just drop the HSW special case and treat all platforms the same way.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Deepak S<deepak.s@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
When reading out a DDI config that uses a PLL that is not part of the
shared_dpll scheme (DPLL0), it's totally normal to end up in the
default: case of that switch.
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
According to "Cherryview_GFXclocks_y14w36d1.xlsx" the GPU frequency
divider should be 10 in when the CZ clock is 400 MHz. Change the code
to agree so that we report the correct frequencies.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Deepak S<deepak.s@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The divider used in the GPU frequency calculations is compatible between
vlv and chv. vlv just wants doubled values compared to chv.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Deepak S<deepak.s@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Always print the final PCBR register value on both vlv and chv, and
also tell us whether the BIOS was a good citizen or not.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Deepak S<deepak.s@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Our freq<->opcode conversions assume that GPLL is always used.
Apparently that should be the case always, but let's scream if we
ever encounter something different.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Deepak S<deepak.s@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Remove the magic number for the GPLLENABLE bit by adding a name for it.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Deepak S<deepak.s@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Even with the rps debug messages signficantly recuced by
commit 67956867aa
Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Tue Sep 2 15:12:17 2014 +0300
drm/i915: Don't spam dmesg with rps messages on vlv/chv
we still get an inordinate amount of spam from this. Just kill the debug
print. If someone wants to observe it they can just use the tracepoint.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Deepak S<deepak.s@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
It's magic, but it seems to work.
This fixes a regression introduced in
commit 1bb9e632a0
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Tue Jul 8 10:02:43 2014 +0200
drm/i915: Only unbind vgacon, not other console drivers
My best guess is that the vga fbdev driver falls over if we rip out
parts of vgacon. Hooray.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=82439
Cc: stable@vger.kernel.org (v3.16+)
Reported-and-tested-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This reverts the regressing
commit 6547fbdbff
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Fri Dec 14 23:38:29 2012 +0100
drm/i915: Implement WaSetupGtModeTdRowDispatch
that causes GPU hangs immediately on boot.
Reported-by: Leo Wolf <jclw@ymail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=79996
Cc: stable@vger.kernel.org (v3.8+)
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
[Jani: amended the commit message slightly.]
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
On chv the pipe-a power well is the new disp2d well, and it kills pretty
much everything in the display block. So we need to do the the same
dance that vlv does wrt. display irqs and hpd when the power well goes
up or down.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Another small set of fixes:
- Some DT compatible typo fixes
- irq setup fix dealing with irq storms on orion
- i2c quirk generalization for mvebu
- A handful of smaller fixes for OMAP
- A couple of added file patterns for OMAP entries in MAINTAINERS
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Merge tag 'armsoc-for-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"Another small set of fixes:
- some DT compatible typo fixes
- irq setup fix dealing with irq storms on orion
- i2c quirk generalization for mvebu
- a handful of smaller fixes for OMAP
- a couple of added file patterns for OMAP entries in MAINTAINERS"
* tag 'armsoc-for-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: at91/dt: Fix sama5d3x typos
pinctrl: dra: dt-bindings: Fix output pull up/down
MAINTAINERS: Update entry for omap related .dts files to cover new SoCs
MAINTAINERS: add more files under OMAP SUPPORT
ARM: dts: AM437x-SK-EVM: Fix DCDC3 voltage
ARM: dts: AM437x-GP-EVM: Fix DCDC3 voltage
ARM: dts: AM43x-EPOS-EVM: Fix DCDC3 voltage
ARM: dts: am335x-evm: Fix 5th NAND partition's name
ARM: orion: Fix for certain sequence of request_irq can cause irq storm
ARM: mvebu: armada xp: Generalize use of i2c quirk
Pull sparc fixes from David Miller:
1) Fix NULL oops in Schizo PCI controller error handler.
2) Fix race between xchg and other operations on 32-bit sparc, from
Andreas Larsson.
3) swab*() helpers need a dummy memory input operand to show data flow
on 64-bit sparc.
4) Fix RCU warnings due to missing irq_{enter,exit}() around
generic_smp_call_function*() calls.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
sparc64: Fix constraints on swab helpers.
sparc32: Implement xchg and atomic_xchg using ATOMIC_HASH locks
sparc64: Do irq_{enter,exit}() around generic_smp_call_function*().
sparc64: Fix crashes in schizo_pcierr_intr_other().
This fixes a regression introduced in 3.13.
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Merge tag 'md/3.18-fix' of git://neil.brown.name/md
Pull md bugfix from Neil Brown:
"One fix for md for 3.18.
This fixes a regression introduced in 3.13"
* tag 'md/3.18-fix' of git://neil.brown.name/md:
md: Always set RECOVERY_NEEDED when clearing RECOVERY_FROZEN
Some DT files had a typo with a missing "5" in sama5d3x first compatible string.
Signed-off-by: Peter Rosin <peda@axentia.se>
[nicolas.ferre@atmel.com: modify commit log]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
MAINTAINERS file to avoid missing PMIC and SoC related patches:
- Fix random hangs on am437x because of incorrect default
value for the DDR regulator
- Fix wrong partition name for NAND on am335x-evm
- Fix wrong pinctrl defines for dra7xx
- Update maintainers entries for PMICs and SoCs
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Merge tag 'omap-fixes-against-v3.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Merge "omap fixes against v3.18-rc4" from Tony Lindgren:
Few omap fixes for hangs and wrong pinctrl defines, and update
MAINTAINERS file to avoid missing PMIC and SoC related patches:
- Fix random hangs on am437x because of incorrect default
value for the DDR regulator
- Fix wrong partition name for NAND on am335x-evm
- Fix wrong pinctrl defines for dra7xx
- Update maintainers entries for PMICs and SoCs
* tag 'omap-fixes-against-v3.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
pinctrl: dra: dt-bindings: Fix output pull up/down
MAINTAINERS: Update entry for omap related .dts files to cover new SoCs
MAINTAINERS: add more files under OMAP SUPPORT
ARM: dts: AM437x-SK-EVM: Fix DCDC3 voltage
ARM: dts: AM437x-GP-EVM: Fix DCDC3 voltage
ARM: dts: AM43x-EPOS-EVM: Fix DCDC3 voltage
ARM: dts: am335x-evm: Fix 5th NAND partition's name
Signed-off-by: Olof Johansson <olof@lixom.net>
- Armada XP
- Generalize i2c quirk
- orion
- Fix irq storm caused by specific sequence of request_irq
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Merge tag 'mvebu-fixes-3.18' of git://git.infradead.org/linux-mvebu into fixes
Merge "mvebu fixes for v3.18" from Jason Cooper:
- Armada XP
- Generalize i2c quirk
- orion
- Fix irq storm caused by specific sequence of request_irq
* tag 'mvebu-fixes-3.18' of git://git.infradead.org/linux-mvebu:
ARM: orion: Fix for certain sequence of request_irq can cause irq storm
ARM: mvebu: armada xp: Generalize use of i2c quirk
md_check_recovery will skip any recovery and also clear
MD_RECOVERY_NEEDED if MD_RECOVERY_FROZEN is set.
So when we clear _FROZEN, we must set _NEEDED and ensure that
md_check_recovery gets run.
Otherwise we could miss out on something that is needed.
In particular, this can make it impossible to remove a
failed device from an array is the 'recovery-needed' processing
didn't happen.
Suitable for stable kernels since 3.13.
Cc: stable@vger.kernel.org (3.13+)
Reported-and-tested-by: Joe Lawrence <joe.lawrence@stratus.com>
Fixes: 30b8feb730
Signed-off-by: NeilBrown <neilb@suse.de>
We are reading the memory location, so we have to have a memory
constraint in there purely for the sake of showing the data flow
to the compiler.
Reported-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This is a set of six fixes and a MAINTAINER update. The fixes are two
multipath (one in Test Unit Ready handling for the path checkers and one in
the section of code that sends a start unit after failover; both of these were
perturbed by the scsi-mq update), a CD-ROM door locking fix that was likewise
introduced by scsi-mq and three driver fixes for a previous code update in
cxgb4i, megaraid_sas and bnx2fc.
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is a set of six fixes and a MAINTAINER update.
The fixes are two multipath (one in Test Unit Ready handling for the
path checkers and one in the section of code that sends a start unit
after failover; both of these were perturbed by the scsi-mq update), a
CD-ROM door locking fix that was likewise introduced by scsi-mq and
three driver fixes for a previous code update in cxgb4i, megaraid_sas
and bnx2fc"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
bnx2fc: fix tgt spinlock locking
megaraid_sas: fix bug in handling return value of pci_enable_msix_range()
cxgb4i: send abort_rpl correctly
cxgbi: add maintainer for cxgb3i/cxgb4i
scsi: TUR path is down after adapter gets reset with multipath
scsi: call device handler for failed TUR command
scsi: only re-lock door after EH on devices that were reset
Pull x86 fixes from Ingo Molnar:
"Microcode fixes, a Xen fix and a KASLR boot loading fix with certain
memory layouts"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86, microcode, AMD: Fix ucode patch stashing on 32-bit
x86/core, x86/xen/smp: Use 'die_complete' completion when taking CPU down
x86, microcode: Fix accessing dis_ucode_ldr on 32-bit
x86, kaslr: Prevent .bss from overlaping initrd
x86, microcode, AMD: Fix early ucode loading on 32-bit
Al Viro pointed out that the x86-64 csum_partial_copy_from_user() is
somewhat confused about what it should do on errors, notably it mostly
clears the uncopied end result buffer, but misses that for the initial
alignment case.
All users should check for errors, so it's dubious whether the clearing
is even necessary, and Al also points out that we should probably clean
up the calling conventions, but regardless of any future changes to this
function, the fact that it is inconsistent is just annoying.
So make the __get_user() failure path use the same error exit as all the
other errors do.
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: David Miller <davem@davemloft.net>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull ARM fixes from Russell King:
"Two fixes this time, one to ensure that the kuser helper option
depends on MMU as they aren't available for noMMU targets (and if the
option is selected, we end up oopsing.)
The second fix plugs a corner case with the decompressor, ensuring
that the instruction stream can see the relocated code in every case
on ARMv7 CPUs"
* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
ARM: 8198/1: make kuser helpers depend on MMU
ARM: 8191/1: decompressor: ensure I-side picks up relocated code
Pull parisc updates from Helge Deller:
"Changes include:
- wire up the bpf syscall
- remove CONFIG_64BIT usage from some userspace-exported header files
- use compat functions for msgctl, shmat, shmctl and semtimedop
syscalls"
* 'parisc-3.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Avoid using CONFIG_64BIT in userspace exported headers
parisc: Use compat layer for msgctl, shmat, shmctl and semtimedop syscalls
parisc: Use BUILD_BUG() instead of undefined functions
parisc: Wire up bpf syscall
