mfd/axp20x: add support for fuel gauge cell
Register definitions and platform data structure
for fuel gauge cell devices.
Signed-off-by: Todd Brandt <todd.e.brandt@intel.com>
Acked-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
After commit: 6e3f62f079 ("mfd: core: Fix platform-device id generation")
We must set the id base when register a duplicate name of mfd_cell.
If not, duplicate filename error was reported.
- sysfs: cannot create duplicate filename '/devices/.../wm8994-ldo'
Signed-off-by: Inha Song <ideal.song@samsung.com>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Without suspend/resume functionality in the USB driver the USB core
will disconnect and reconnect the DLN2 port and because the GPIO
framework does not yet support removal of an in-use controller a
suspend/resume operation will result in a crash.
This patch provides suspend and resume functions for the DLN2 driver
so that the above scenario is avoided, if the host controller does not
drop VBUS during suspend, since in this case the device state is
preserved.
We chose not implemented reset_resume so that if the host controller
does drop VBUS the resume path will go through above the
disconnect/reconnect process since it is probably better to fix the
GPIO framework disconnect issue then to save and restore the device
state for every driver.
Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Reviewed-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This is in preparation for adding suspend / resume support.
Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Reviewed-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Quark X1000 uses ie6xx_wdt driver for WDT. To enable WDT, we declare WDT IO
resource size for Quark X1000.
Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
DA9150 is a combined Charger and Fuel-Gauge IC, with additional
GPIO and GPADC functionality.
Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Remove the function prcmu_get_boot_status() that is not used anywhere.
This was partially found by using a static code analysis program called cppcheck.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Add support for the ir-clk which is part of the sun6i SoC prcm module.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This patch adds a new driver for Richtek RT5033 driver.
RT5033 is a Multifunction device which includes battery charger, fuel gauge,
flash LED current source, LDO and synchronous Buck converter. It is interfaced
to host controller using I2C interface.
Signed-off-by: Beomho Seo <beomho.seo@samsung.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
- Skip caching volatile registers in tps65218
- Use correct address base in tps65218
- Repair deadlock on suspend in rtsx_usb
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Merge tag 'mfd-fixes-3.19' into HEAD
- Avoid platform ID collision in da9052
- Skip caching volatile registers in tps65218
- Use correct address base in tps65218
- Repair deadlock on suspend in rtsx_usb
sd_set_power_mode() in derived module drivers/mmc/host/rtsx_usb_sdmmc.c
acquires dev_mutex and then calls pm_runtime_get_sync() to make sure the
device is awake while initializing a newly inserted card. Once it is
called during suspending state and explicitly before rtsx_usb_suspend()
acquires the same dev_mutex, both routine deadlock and further hang the
driver because pm_runtime_get_sync() waits the pending PM operations.
Fix this by using an empty suspend method. mmc_core always turns the
LED off after a request is done and thus it is ok to remove the only
rtsx_usb_turn_off_led() here.
Cc: <stable@vger.kernel.org> # v3.16+
Fixes: 730876be25 ("mfd: Add realtek USB card reader driver")
Signed-off-by: Roger Tseng <rogerable@realtek.com>
[Lee: Removed newly unused variable]
Signed-off-by: Lee Jones <lee.jones@linaro.org>
If we don't tell regmap-irq that our first status
register is at offset 1, it will try to read offset
zero, which is the chipid register.
Fixes: 44b4dc6 mfd: tps65218: Add driver for the TPS65218 PMIC
Cc: <stable@vger.kernel.org> # v3.15+
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
STATUS register can be modified by the HW, so we
should bypass cache because of that.
In the case of INT[12] registers, they are the ones
that actually clear the IRQ source at the time they
are read. If we rely on the cache for them, we will
never be able to clear the interrupt, which will cause
our IRQ line to be disabled due to IRQ throttling.
Fixes: 44b4dc6 mfd: tps65218: Add driver for the TPS65218 PMIC
Cc: <stable@vger.kernel.org> # v3.15+
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Allow multiple DA9052 regulators be registered by registering with
PLATFORM_DEVID_AUTO instead of PLATFORM_DEVID_NONE.
The subdevices are currently registered with PLATFORM_DEVID_NONE, which
will cause a name collision on the platform bus when multiple regulators
are registered:
[ 0.128855] da9052-regulator da9052-regulator: invalid regulator ID specified
[ 0.128973] da9052-regulator: probe of da9052-regulator failed with error -22
[ 0.129148] ------------[ cut here ]------------
[ 0.129200] WARNING: CPU: 0 PID: 1 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x5c/0x7c()
[ 0.129233] sysfs: cannot create duplicate filename '/devices/platform/soc/60000000.aips/63fc8000.i2c/i2c-0/0-0048/da9052-regulator
...
[ 0.132891] ------------[ cut here ]------------
[ 0.132924] WARNING: CPU: 0 PID: 1 at lib/kobject.c:240 kobject_add_internal+0x24c/0x2cc()
[ 0.132957] kobject_add_internal failed for da9052-regulator with -EEXIST, don't try to register things with the same name in the same directory.
...
[ 0.137000] da9052 0-0048: mfd_add_devices failed: -17
[ 0.138486] da9052: probe of 0-0048 failed with error -17
Based on the fix done by Johan Hovold at commit b668422872 ("mfd:
viperboard: Fix platform-device id collision").
Tested on a imx53-qsb board, where multiple DA9053 regulators can be
successfully probed.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
On top of this, add a couple of WARN_ONs and stop spamming dmesg on
pretty much every boot of a virtual machine.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"The important fixes are for two bugs introduced by the merge window.
On top of this, add a couple of WARN_ONs and stop spamming dmesg on
pretty much every boot of a virtual machine"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
kvm: warn on more invariant breakage
kvm: fix sorting of memslots with base_gfn == 0
kvm: x86: drop severity of "generation wraparound" message
kvm: x86: vmx: reorder some msr writing
Pull vfs fix from Al Viro:
"An embarrassing bug in lustre patches from this cycle ;-/"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
[regression] braino in "lustre: use is_root_inode()"
Modifying a non-existent slot is not allowed. Also check that the
first loop doesn't move a deleted slot beyond the used part of
the mslots array.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Before commit 0e60b0799f (kvm: change memslot sorting rule from size
to GFN, 2014-12-01), the memslots' sorting key was npages, meaning
that a valid memslot couldn't have its sorting key equal to zero.
On the other hand, a valid memslot can have base_gfn == 0, and invalid
memslots are identified by base_gfn == npages == 0.
Because of this, commit 0e60b0799f broke the invariant that invalid
memslots are at the end of the mslots array. When a memslot with
base_gfn == 0 was created, any invalid memslot before it were left
in place.
This can be fixed by changing the insertion to use a ">=" comparison
instead of "<=", but some care is needed to avoid breaking the case
of deleting a memslot; see the comment in update_memslots.
Thanks to Tiejun Chen for posting an initial patch for this bug.
Reported-by: Jamie Heilman <jamie@audible.transient.net>
Reported-by: Andy Lutomirski <luto@amacapital.net>
Tested-by: Jamie Heilman <jamie@audible.transient.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Just a couple of fixes for the new Intel Skylake HD-audio support.
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Merge tag 'sound-3.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Just a couple of fixes for the new Intel Skylake HD-audio support"
* tag 'sound-3.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda_intel: apply the Seperate stream_tag for Skylake
ALSA: hda_controller: Separate stream_tag for input and output streams.
Since most virtual machines raise this message once, it is a bit annoying.
Make it KERN_DEBUG severity.
Cc: stable@vger.kernel.org
Fixes: 7a2e8aaf0f
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The commit 34a1cd60d1, "x86: vmx: move some vmx setting from
vmx_init() to hardware_setup()", tried to refactor some codes
specific to vmx hardware setting into hardware_setup(), but some
msr writing should depend on our previous setting condition like
enable_apicv, enable_ept and so on.
Reported-by: Jamie Heilman <jamie@audible.transient.net>
Tested-by: Jamie Heilman <jamie@audible.transient.net>
Signed-off-by: Tiejun Chen <tiejun.chen@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
In one of the places (ll_md_blocking_ast()) we had open-coded
!is_root_inode(inode) and replaced it with is_root_inode(inode).
See the last chunk of f76c23:
- inode != inode->i_sb->s_root->d_inode)
+ is_root_inode(inode))
should've been
+ !is_root_inode(inode))
obviously...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Pull parisc build fix from Helge Deller:
"This unbreaks the kernel compilation on parisc with gcc-4.9"
* 'parisc-3.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: fix out-of-register compiler error in ldcw inline assembler function
The __ldcw macro has a problem when its argument needs to be reloaded from
memory. The output memory operand and the input register operand both need to
be reloaded using a register in class R1_REGS when generating 64-bit code.
This fails because there's only a single register in the class. Instead, use a
memory clobber. This also makes the __ldcw macro a compiler memory barrier.
Signed-off-by: John David Anglin <dave.anglin@bell.net>
Cc: <stable@vger.kernel.org> [3.13+]
Signed-off-by: Helge Deller <deller@gmx.de>
The total stream number of Skylake's input and output stream
exceeds 15, which will cause some streams do not work because
of the overflow on SDxCTL.STRM field if using the legacy
stream tag allocation method.
This patch uses the new stream tag allocation method by add
the flag AZX_DCAPS_SEPARATE_STREAM_TAG for Skylake platform.
Signed-off-by: Libin Yang <libin.yang@intel.com>
Reviewed-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Implemented separate stream_tag assignment for input and output streams.
According to hda specification stream tag must be unique throughout the
input streams group, however an output stream might use a stream tag
which is already in use by an input stream. This change is necessary
to support HW which provides a total of more than 15 stream DMA engines
which with legacy implementation causes an overflow on SDxCTL.STRM
field (and the whole SDxCTL register) and as a result usage of
Reserved value 0 in the SDxCTL.STRM field which confuses HDA controller.
Signed-off-by: Rafal Redzimski <rafal.f.redzimski@intel.com>
Signed-off-by: Jayachandran B <jayachandran.b@intel.com>
Signed-off-by: Libin Yang <libin.yang@intel.com>
Reviewed-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Pull drm fixes from Dave Airlie:
"Xmas fixes pull:
core:
one atomic fix, revert the WARN_ON dumb buffers patch.
agp:
fixup Dave J.
nouveau:
fix 3.18 regression for old userspace
tegra fixes:
vblank and iommu fixes
amdkfd:
fix bugs shown by testing with userspace, init apertures once
msm:
hdmi fixes and cleanup
i915:
misc fixes
There is also a link ordering fix that I've asked to be cc'ed to you,
putting iommu before gpu, it fixes an issue with amdkfd when things
are all in the kernel, but I didn't like sending it via my tree
without discussion.
I'll probably be a bit on/off for a few weeks with pulls now, due to
holidays and LCA, so don't be surprised if stuff gets a bit backed up,
and things end up a bit large due to lag"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (28 commits)
Revert "drm/gem: Warn on illegal use of the dumb buffer interface v2"
agp: Fix up email address & attributions in AGP MODULE_AUTHOR tags
nouveau: bring back legacy mmap handler
drm/msm/hdmi: rework HDMI IRQ handler
drm/msm/hdmi: enable regulators before clocks to avoid warnings
drm/msm/mdp5: update irqs on crtc<->encoder link change
drm/msm: block incoming update on pending updates
drm/atomic: fix potential null ptr on plane enable
drm/msm: Deletion of unnecessary checks before the function call "release_firmware"
drm/msm: Deletion of unnecessary checks before two function calls
drm/tegra: dc: Select root window for event dispatch
drm/tegra: gem: Use the proper size for GEM objects
drm/tegra: gem: Flush buffer objects upon allocation
drm/tegra: dc: Fix a potential race on page-flip completion
drm/tegra: dc: Consistently use the same pipe
drm/irq: Add drm_crtc_vblank_count()
drm/irq: Add drm_crtc_handle_vblank()
drm/irq: Add drm_crtc_send_vblank_event()
drm/i915: Disable PSMI sleep messages on all rings around context switches
drm/i915: Force the CS stall for invalidate flushes
...
One that lockdep turned up, I didn't go far enough with cleanup
of attributes for IPMI. This has been there a long time; my
previous fix of this didn't fix all the attributes.
One fix for some arches that need an explicit linux/ctype.h for
isspace().
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Merge tag 'for-linus-2' of git://git.code.sf.net/p/openipmi/linux-ipmi
Pull ipmi driver bugfixes from Corey Minyard:
"Fix two bugs:
One that lockdep turned up, I didn't go far enough with cleanup of
attributes for IPMI. This has been there a long time; my previous fix
of this didn't fix all the attributes.
One fix for some arches that need an explicit linux/ctype.h for
isspace()"
* tag 'for-linus-2' of git://git.code.sf.net/p/openipmi/linux-ipmi:
ipmi: Fix compile issue with isspace()
ipmi: Finish cleanup of BMC attributes
This reverts commit 355a701838.
This had some bad side effects under normal operation, and should
have been dropped earlier.
Signed-off-by: Dave Airlie <airlied@redhat.com>
- Display MEC fw version in topology. Without this, the HSA userspace
stack is broken.
- Init apertures information only once per process
* tag 'amdkfd-fixes-2014-12-23' of git://people.freedesktop.org/~gabbayo/linux:
amdkfd: init aperture once per process
amdkfd: Display MEC fw version in topology node
drm/radeon: Add implementation of get_fw_version
drm/amd: Add get_fw_version to kfd-->kgd interface
Pull audit fixes from Paul Moore:
"Four patches to fix various problems with the audit subsystem, all are
fairly small and straightforward.
One patch fixes a problem where we weren't using the correct gfp
allocation flags (GFP_KERNEL regardless of context, oops), one patch
fixes a problem with old userspace tools (this was broken for a
while), one patch fixes a problem where we weren't recording pathnames
correctly, and one fixes a problem with PID based filters.
In general I don't think there is anything controversial with this
patchset, and it fixes some rather unfortunate bugs; the allocation
flag one can be particularly scary looking for users"
* 'upstream' of git://git.infradead.org/users/pcmoore/audit:
audit: restore AUDIT_LOGINUID unset ABI
audit: correctly record file names with different path name types
audit: use supplied gfp_mask from audit_buffer in kauditd_send_multicast_skb
audit: don't attempt to lookup PIDs when changing PID filtering audit rules
A regression was caused by commit 780a7654cee8:
audit: Make testing for a valid loginuid explicit.
(which in turn attempted to fix a regression caused by e1760bd)
When audit_krule_to_data() fills in the rules to get a listing, there was a
missing clause to convert back from AUDIT_LOGINUID_SET to AUDIT_LOGINUID.
This broke userspace by not returning the same information that was sent and
expected.
The rule:
auditctl -a exit,never -F auid=-1
gives:
auditctl -l
LIST_RULES: exit,never f24=0 syscall=all
when it should give:
LIST_RULES: exit,never auid=-1 (0xffffffff) syscall=all
Tag it so that it is reported the same way it was set. Create a new
private flags audit_krule field (pflags) to store it that won't interact with
the public one from the API.
Cc: stable@vger.kernel.org # v3.10-rc1+
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Paul Moore <pmoore@redhat.com>
This patch adds pgd_page definition in order to keep supporting
HAVE_GENERIC_RCU_GUP configuration. In addition, it changes pud_page
expression to align with pmd_page for readability.
An introduction of pgd_page resolves the following build breakage
under 4KB + 4Level memory management combo.
mm/gup.c: In function 'gup_huge_pgd':
mm/gup.c:889:2: error: implicit declaration of function 'pgd_page' [-Werror=implicit-function-declaration]
head = pgd_page(orig);
^
mm/gup.c:889:7: warning: assignment makes pointer from integer without a cast
head = pgd_page(orig);
Cc: Will Deacon <will.deacon@arm.com>
Cc: Steve Capper <steve.capper@linaro.org>
Signed-off-by: Jungseok Lee <jungseoklee85@gmail.com>
[catalin.marinas@arm.com: remove duplicate pmd_page definition]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
The usual defconfig tweaks, this time:
- FHANDLE and AUTOFS4_FS to keep systemd happy
- PID_NS, QUOTA and KEYS to keep LTP happy
- Disable DEBUG_PREEMPT, as this *really* hurts performance
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
On arm64 the TTBR0_EL1 register is set to either the reserved TTBR0
page tables on boot or to the active_mm mappings belonging to user space
processes, it must never be set to swapper_pg_dir page tables mappings.
When a CPU is booted its active_mm is set to init_mm even though its
TTBR0_EL1 points at the reserved TTBR0 page mappings. This implies
that when __cpu_suspend is triggered the active_mm can point at
init_mm even if the current TTBR0_EL1 register contains the reserved
TTBR0_EL1 mappings.
Therefore, the mm save and restore executed in __cpu_suspend might
turn out to be erroneous in that, if the current->active_mm corresponds
to init_mm, on resume from low power it ends up restoring in the
TTBR0_EL1 the init_mm mappings that are global and can cause speculation
of TLB entries which end up being propagated to user space.
This patch fixes the issue by checking the active_mm pointer before
restoring the TTBR0 mappings. If the current active_mm == &init_mm,
the code sets the TTBR0_EL1 to the reserved TTBR0 mapping instead of
switching back to the active_mm, which is the expected behaviour
corresponding to the TTBR0_EL1 settings when __cpu_suspend was entered.
Fixes: 95322526ef ("arm64: kernel: cpu_{suspend/resume} implementation")
Cc: <stable@vger.kernel.org> # 3.14+: 18ab7db
Cc: <stable@vger.kernel.org> # 3.14+: 714f599
Cc: <stable@vger.kernel.org> # 3.14+: c3684fb
Cc: <stable@vger.kernel.org> # 3.14+
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
- Remove soon-to-be-dead @redhat address.
- Jeff Hartmann wrote the bulk of the original backend code, and should
at least get a mention in the MODULE_AUTHOR for backend.o
- Various people at Intel have done a lot more work than myself on the
intel-* drivers, so again, mention that.
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
- Fix inability to discard used space when the thin-pool target is in
out-of-data-space mode and also transition the thin-pool back to write
mode once free space is made available.
- Fix DM core bio-based end_io bug that prevented proper post-processing
of the error code returned from the block layer.
- Fix crash in DM thin-pool due to thin device being added to the pool's
active_thins list before properly initializing the thin device's
refcount.
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Merge tag 'dm-3.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
"Thre stable fixes and one fix for a regression introduced during 3.19
merge:
- Fix inability to discard used space when the thin-pool target is in
out-of-data-space mode and also transition the thin-pool back to
write mode once free space is made available.
- Fix DM core bio-based end_io bug that prevented proper
post-processing of the error code returned from the block layer.
- Fix crash in DM thin-pool due to thin device being added to the
pool's active_thins list before properly initializing the thin
device's refcount"
* tag 'dm-3.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm: fix missed error code if .end_io isn't implemented by target_type
dm thin: fix crash by initializing thin device's refcount and completion earlier
dm thin: fix missing out-of-data-space to write mode transition if blocks are released
dm thin: fix inability to discard blocks when in out-of-data-space mode
This reverts commit c8475d144a.
There are several[1][2] of bug reports which points to this commit as potential
cause[3].
Let's revert it until we figure out what's going on.
[1] https://lkml.org/lkml/2014/11/14/342
[2] https://lkml.org/lkml/2014/12/22/213
[3] https://lkml.org/lkml/2014/12/9/741
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Acked-by: Davidlohr Bueso <dave@stgolabs.net>
Cc: Hugh Dickins <hughd@google.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Mel Gorman <mgorman@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This is a set of fixes for two regressions and one bug in the IOMMU
mapping code. It turns out that all of these issues turn up primarily
on Tegra30 hardware. The IOMMU mapping bug only manifests on buffers
that aren't multiples of the page size. I happened to be testing HDMI
with 1080p while writing the code and framebuffers for that happen to
fit exactly within 2025 pages of 4 KiB each.
One of the regressions is caused by the IOMMU code allocating pages from
shmem which can have associated cache lines. If the pages aren't flushed
then these cache lines may be flushed later on and cause framebuffer
corruption. I'm not sure why I didn't see this before. Perhaps the board
that I was using had enough RAM so that the pages shmem would hand out
had a better chance of being unused. Or maybe I didn't look too closely.
The fix for this is to fake up an SG table so that it can be passed to
the DMA API. Ideally this would use drm_clflush_*(), but implementing
that for ARM causes DRM to fail to build as a module since some of the
low-level cache maintenance functions aren't exported. Hopefully we can
get a suitable API exported on ARM for the next release.
The second regression is caused by a mismatch between the hardware pipe
number and the CRTC's DRM index. These were used inconsistently, which
could cause one code location to call drm_vblank_get() with a different
pipe than the corresponding drm_vblank_put(), thereby causing the
reference count to become unbalanced. Alexandre also reported a possible
race condition related to this, which this series also fixes.
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Merge tag 'drm/tegra/for-3.19-rc1-fixes' of git://people.freedesktop.org/~tagr/linux into drm-fixes
drm/tegra: Fixes for v3.19-rc1
This is a set of fixes for two regressions and one bug in the IOMMU
mapping code. It turns out that all of these issues turn up primarily
on Tegra30 hardware. The IOMMU mapping bug only manifests on buffers
that aren't multiples of the page size. I happened to be testing HDMI
with 1080p while writing the code and framebuffers for that happen to
fit exactly within 2025 pages of 4 KiB each.
One of the regressions is caused by the IOMMU code allocating pages from
shmem which can have associated cache lines. If the pages aren't flushed
then these cache lines may be flushed later on and cause framebuffer
corruption. I'm not sure why I didn't see this before. Perhaps the board
that I was using had enough RAM so that the pages shmem would hand out
had a better chance of being unused. Or maybe I didn't look too closely.
The fix for this is to fake up an SG table so that it can be passed to
the DMA API. Ideally this would use drm_clflush_*(), but implementing
that for ARM causes DRM to fail to build as a module since some of the
low-level cache maintenance functions aren't exported. Hopefully we can
get a suitable API exported on ARM for the next release.
The second regression is caused by a mismatch between the hardware pipe
number and the CRTC's DRM index. These were used inconsistently, which
could cause one code location to call drm_vblank_get() with a different
pipe than the corresponding drm_vblank_put(), thereby causing the
reference count to become unbalanced. Alexandre also reported a possible
race condition related to this, which this series also fixes.
* tag 'drm/tegra/for-3.19-rc1-fixes' of git://people.freedesktop.org/~tagr/linux:
drm/tegra: dc: Select root window for event dispatch
drm/tegra: gem: Use the proper size for GEM objects
drm/tegra: gem: Flush buffer objects upon allocation
drm/tegra: dc: Fix a potential race on page-flip completion
drm/tegra: dc: Consistently use the same pipe
drm/irq: Add drm_crtc_vblank_count()
drm/irq: Add drm_crtc_handle_vblank()
drm/irq: Add drm_crtc_send_vblank_event()
misc i915 fixes.
* tag 'drm-intel-next-fixes-2014-12-17' of git://anongit.freedesktop.org/drm-intel:
drm/i915: Disable PSMI sleep messages on all rings around context switches
drm/i915: Force the CS stall for invalidate flushes
drm/i915: Invalidate media caches on gen7
drm/i915: sanitize RPS resetting during GPU reset
drm/i915: move RPS PM_IER enabling to gen6_enable_rps_interrupts
drm/i915: vlv: fix IRQ masking when uninstalling interrupts
Yeah a pull for one patch is a bit overkill but I started to assemble the
various patches for 3.20 in a branch for atomic props/ioctl and didn't
realize that this bugfix here at the beginnning of the branch should be in
3.19 (because msm is using the helpers arleady). So if you'd merge we'd
have it twice or or I need to shuffle branches again. Can do if you want.
* tag 'topic/atomic-fixes-2014-12-17' of git://anongit.freedesktop.org/drm-intel:
drm/atomic: fix potential null ptr on plane enable
A few msm fixes for 3.19:
* hdmi regulators fix
* hdmi fix for spurious HPD interrupts
* fix for sync atomic update after async update (which could show
up with a setcrtc following a pageflip)
* couple little Coccinelle cleanups
* 'msm-fixes-3.19' of git://people.freedesktop.org/~robclark/linux:
drm/msm/hdmi: rework HDMI IRQ handler
drm/msm/hdmi: enable regulators before clocks to avoid warnings
drm/msm/mdp5: update irqs on crtc<->encoder link change
drm/msm: block incoming update on pending updates
drm/msm: Deletion of unnecessary checks before the function call "release_firmware"
drm/msm: Deletion of unnecessary checks before two function calls
nouveau userspace back at 1.0.1 used to call the X server
DRIOpenDRMMaster interface even for DRI2 (doh!), this attempts
to map the sarea and fails if it can't.
Since 884c6dabb0 from Daniel,
this fails, but only ancient drivers would see it.
Revert the nouveau bits of that fix.
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: <stable@vger.kernel.org> # 3.18
Signed-off-by: Dave Airlie <airlied@redhat.com>
There is a problem with the audit system when multiple audit records
are created for the same path, each with a different path name type.
The root cause of the problem is in __audit_inode() when an exact
match (both the path name and path name type) is not found for a
path name record; the existing code creates a new path name record,
but it never sets the path name in this record, leaving it NULL.
This patch corrects this problem by assigning the path name to these
newly created records.
There are many ways to reproduce this problem, but one of the
easiest is the following (assuming auditd is running):
# mkdir /root/tmp/test
# touch /root/tmp/test/567
# auditctl -a always,exit -F dir=/root/tmp/test
# touch /root/tmp/test/567
Afterwards, or while the commands above are running, check the audit
log and pay special attention to the PATH records. A faulty kernel
will display something like the following for the file creation:
type=SYSCALL msg=audit(1416957442.025:93): arch=c000003e syscall=2
success=yes exit=3 ... comm="touch" exe="/usr/bin/touch"
type=CWD msg=audit(1416957442.025:93): cwd="/root/tmp"
type=PATH msg=audit(1416957442.025:93): item=0 name="test/"
inode=401409 ... nametype=PARENT
type=PATH msg=audit(1416957442.025:93): item=1 name=(null)
inode=393804 ... nametype=NORMAL
type=PATH msg=audit(1416957442.025:93): item=2 name=(null)
inode=393804 ... nametype=NORMAL
While a patched kernel will show the following:
type=SYSCALL msg=audit(1416955786.566:89): arch=c000003e syscall=2
success=yes exit=3 ... comm="touch" exe="/usr/bin/touch"
type=CWD msg=audit(1416955786.566:89): cwd="/root/tmp"
type=PATH msg=audit(1416955786.566:89): item=0 name="test/"
inode=401409 ... nametype=PARENT
type=PATH msg=audit(1416955786.566:89): item=1 name="test/567"
inode=393804 ... nametype=NORMAL
This issue was brought up by a number of people, but special credit
should go to hujianyang@huawei.com for reporting the problem along
with an explanation of the problem and a patch. While the original
patch did have some problems (see the archive link below), it did
demonstrate the problem and helped kickstart the fix presented here.
* https://lkml.org/lkml/2014/9/5/66
Reported-by: hujianyang <hujianyang@huawei.com>
Signed-off-by: Paul Moore <pmoore@redhat.com>
Acked-by: Richard Guy Briggs <rgb@redhat.com>
Commit a3a60f81ee (dma-mapping: replace set_arch_dma_coherent_ops with
arch_setup_dma_ops) changes the of_dma_configure() arch dma_ops callback
to arch_setup_dma_ops but only the arch/arm code is updated. Subsequent
commit 97890ba928 (dma-mapping: detect and configure IOMMU in
of_dma_configure) changes the arch_setup_dma_ops() prototype further to
handle iommu. The patch makes the corresponding arm64 changes.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reported-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Will Deacon <will.deacon@arm.com>
The previous cleanup of BMC attributes left a few holes, and if
you run with lockdep debugging with a BMC with the proper attributes,
you could get a warning.
This patch removes all the unused attributes from the BMC structure,
since they are all declared in the .data section now. It makes
the attributes all static. It fixes the referencing of the
attributes in a couple of cases that dynamically added the files
depending on BMC information.
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Cc: Huang Ying <ying.huang@intel.com>
Tested-by: Alexei Starovoitov <ast@plumgrid.com>
Todd E Brandt
Inha Song
Octavian Purdila
Ong Boon Leong
Adam Thomson
Rickard Strandqvist
Hans de Goede
Beomho Seo
Lee Jones
Roger Tseng
Felipe Balbi
Fabio Estevam
Linus Torvalds
Paolo Bonzini
Tiejun Chen
Al Viro
John David Anglin
Libin Yang
Rafal Redzimski
Dave Airlie
Richard Guy Briggs
Jungseok Lee
Will Deacon
Lorenzo Pieralisi
Dave Jones
Kirill A. Shutemov
Paul Moore
Catalin Marinas
Corey Minyard