TGL/ADL DSI can be configured to place the clock lane into
LP state during LPM, if otherwise configured for continuous
HS clock.
Hook that up. VBT tells us whether this should be done.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patch.msgid.link/20260326111814.9800-6-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
TGL/ADL DSI can be configured to fill all BLLPs with blanking
packets. Currently we enable that always, but the VBT actually
tells us whether this is desired or not. Hook that up.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patch.msgid.link/20260326111814.9800-5-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Based on feature revision, number of buckets can be less than the
TRL_MAX_BUCKETS. In that case core counts in the remaining buckets
can be set to some invalid values.
Hence reset core count to 0 for all buckets before assigning correct
values.
Fixes: 885d1c2a30 ("platform/x86: ISST: Support SST-TF revision 2")
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260325192638.3417281-1-srinivas.pandruvada@linux.intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Since the PM core automatically falls back to using the driver PM
callbacks directly if no bus type callbacks are present, it is not
necessary to define a struct dev_pm_ops for a bus type that will only
invoke driver PM callbacks from its PM callbacks.
Accordingly, auxiliary_dev_pm_ops is redundant, so drop it.
No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/4738700.LvFx2qVVIh@rafael.j.wysocki
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The DSI 'clock_stop' parameter is a boolean, so use a real
'bool' for it. And pimp the debug print while at it.
Note that we also remove the incorrect negation of the value
in the debug print. That has been there since the code was
introduced in commit 2ab8b458c6 ("drm/i915: Add support for
Generic MIPI panel driver"). An earlier version of the patch
https://lore.kernel.org/intel-gfx/1397454507-10273-5-git-send-email-shobhit.kumar@intel.com/
got it right, but looks like it got fumbled while dealing
with other review comments.
v2: Highlight the removal of the '!' (Jani)
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patch.msgid.link/20260326111814.9800-4-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
eotp == "End of Transmission Packet". Drop the redundant
extra 'p' from 'eotp_pkt', and make the thing a boolean
while at it.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patch.msgid.link/20260326111814.9800-3-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Stop adjusting the horizontal timing values based on the
compression ratio in command mode. Bspec seems to be telling
us to do this only in video mode, and this is also how the
Windows driver does things.
This should also fix a div-by-zero on some machines because
the adjusted htotal ends up being so small that we end up with
line_time_us==0 when trying to determine the vtotal value in
command mode.
Note that this doesn't actually make the display on the
Huawei Matebook E work, but at least the kernel no longer
explodes when the driver loads.
Cc: stable@vger.kernel.org
Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/12045
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patch.msgid.link/20260326111814.9800-2-ville.syrjala@linux.intel.com
Fixes: 53693f02d8 ("drm/i915/dsi: account for DSC in horizontal timings")
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
The newly added hid-lenovo-go and hid-lenovo-go-s drivers attempt to
'select LEDS_CLASS', which has a dependency on NEW_LEDS, causing a build
failure when NEW_LEDS itself it disabled:
WARNING: unmet direct dependencies detected for LEDS_CLASS
Depends on [n]: NEW_LEDS [=n]
Selected by [m]:
- HID_LENOVO_GO [=m] && HID_SUPPORT [=y] && HID [=m] && USB_HID [=m]
- HID_LENOVO_GO_S [=m] && HID_SUPPORT [=y] && HID [=m] && USB_HID [=m]
WARNING: unmet direct dependencies detected for LEDS_CLASS_MULTICOLOR
Depends on [n]: NEW_LEDS [=n] && LEDS_CLASS [=m]
Selected by [m]:
- HID_LENOVO_GO [=m] && HID_SUPPORT [=y] && HID [=m] && USB_HID [=m]
- HID_LENOVO_GO_S [=m] && HID_SUPPORT [=y] && HID [=m] && USB_HID [=m]
ERROR: modpost: "led_set_brightness_nopm" [drivers/leds/led-class.ko] undefined!
ERROR: modpost: "led_set_brightness" [drivers/leds/led-class.ko] undefined!
ERROR: modpost: "led_get_color_name" [drivers/leds/led-class-multicolor.ko] undefined!
ERROR: modpost: "led_set_brightness" [drivers/leds/led-class-multicolor.ko] undefined!
Device drivers generally should not select other subsystems like this, as
that tends to cause dependency problems including loops in the dependency
graph.
Change these two and the older hid-lenovo driver to behave the same way as all
other HID drivers and use 'depends on LEDS_CLASS' or 'depends on LEDS_CLASS_MULTICOLOR'
instead, which itself has NEW_LEDS and LEDS_CLASS as dependencies.
Fixes: a23f3497bf ("HID: hid-lenovo-go-s: Add Lenovo Legion Go S Series HID Driver")
Fixes: d69ccfcbc9 ("HID: hid-lenovo-go: Add Lenovo Legion Go Series HID Driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Mark Pearson <mpearson-lenovo@squebb.ca>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
According to a mailing list report [1], this controller's predecessor
has the same issue. However, it uses the xpad driver instead of HID, so
this quirk wouldn't apply.
[1]: https://lore.kernel.org/linux-input/unufo3$det$1@ciao.gmane.io/
Signed-off-by: leo vriska <leo@60228.dev>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
roccat_report_event() iterates over the device->readers list without
holding the readers_lock. This allows a concurrent roccat_release() to
remove and free a reader while it's still being accessed, leading to a
use-after-free.
Protect the readers list traversal with the readers_lock mutex.
Signed-off-by: Benoît Sevens <bsevens@google.com>
Reviewed-by: Silvan Jegen <s.jegen@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
of_property_read_u32 returns 0 on success. The current check returns
-EINVAL if the property is read successfully.
Fix the check by removing ! from of_property_read_u32
Fixes: b9c7aff481 ("drivers/thermal/spear_thermal.c: add Device Tree probing capability")
Signed-off-by: Gopi Krishna Menon <krishnagopi487@gmail.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@kernel.org>
Suggested-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Link: https://patch.msgid.link/20260327090526.59330-1-krishnagopi487@gmail.com
Document the compatible for Qualcomm Eliza SoC TSENS module, fully
compatible with TSENS v2 generation (e.g. SM8650).
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://patch.msgid.link/20260327100733.365573-2-krzysztof.kozlowski@oss.qualcomm.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@kernel.org>
As part of an effort to refactor user_mem_abort() into smaller, more
focused helper functions, extract the logic responsible for determining
the VMA shift and page size into a new static helper,
kvm_s2_resolve_vma_size().
Reviewed-by: Joey Gouly <joey.gouly@arm.com>
Signed-off-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Commit d6edc31f3a ("clk: qcom: smd-rpm: Separate out interconnect bus
clocks") moved control over several RPM resources from the clk-smd-rpm
driver to the icc-rpm.c interconnect helpers. Most of the platforms were
fixed before that commit or shortly after. However the MSM8974 was left
as a foster child in broken state. Fix the loose ends and reenable
interconnects on that platform.
* icc-msm8974
dt-bindings: interconnect: qcom,msm8974: drop bus clocks
dt-bindings: interconnect: qcom,msm8974: use qcom,rpm-common
interconnect: qcom: drop unused is_on flag
interconnect: qcom: icc-rpm: allow overwriting get_bw callback
interconnect: qcom: define OCMEM bus resource
interconnect: qcom: let platforms declare their bugginess
interconnect: qcom: msm8974: switch to the main icc-rpm driver
interconnect: qcom: msm8974: expand DEFINE_QNODE macros
Link: https://msgid.link/20260324-msm8974-icc-v2-0-527280043ad8@oss.qualcomm.com
Tested-by: Alexandre Messier <alex@me.ssier.org>
Tested-by: Luca Weiss <luca.weiss@fairphone.com> # fairphone-fp2
Signed-off-by: Georgi Djakov <djakov@kernel.org>
Correct the upper bound from CTIINOUTEN_MAX to config->nr_trig_max,
since nr_trig_max varies across CTI devices. An out-of-bounds issue
occurs when a value greater than config->nr_trig_max is provided,
leading to unexpected errors.
Fixes: b5213376c2 ("coresight: cti: Add sysfs access to program function registers")
Signed-off-by: Jie Gan <jie.gan@oss.qualcomm.com>
Reviewed-by: Leo Yan <leo.yan@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20260327-fix-cti-issue-v1-1-2c8921e21fc8@oss.qualcomm.com
The behavior of RTLA on receiving SIGINT is currently undocumented.
Describe it in RTLA's common appendix that appears in man pages for all
RTLA tools to avoid confusion.
Suggested-by: Attila Fazekas <afazekas@redhat.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Link: https://lore.kernel.org/r/20260324123229.152424-1-tglozar@redhat.com
Signed-off-by: Tomas Glozar <tglozar@redhat.com>
commit 30b3211aa2 ("ALSA: hda/intel: Add MSI X870E Tomahawk
to denylist") was added to silence a warning, but this effectively
reintroduced commit df42ee7e22 ("ALSA: hda: Add ASRock
X670E Taichi to denylist") which was already reported to cause
problems and reverted in commit ee8f161359 ("Revert "ALSA: hda:
Add ASRock X670E Taichi to denylist"")
Revert it yet again.
Cc: stable@vger.kernel.org
Reported-by: Juhyun Song <juju6985@outlook.kr>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=221274
Cc: Stuart Hayhurst <stuart.a.hayhurst@gmail.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://patch.msgid.link/20260326190542.524515-1-mario.limonciello@amd.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Replace memset() followed by memcpy() with memcpy_and_pad() to simplify
the code and to write to ->auth_key only once.
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Add the missing > characters to the end of the email address
Signed-off-by: Mieczyslaw Nalewaj <namiltd@yahoo.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Correct the typo in the name "ecb(des-eip93)".
Signed-off-by: Mieczyslaw Nalewaj <namiltd@yahoo.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
During packet transmission, if the system is under heavy load,
the hardware might complete processing the packet and free the
request memory (req) before the transmission function finishes.
If the software subsequently accesses this req, a use-after-free
error will occur. The qp_ctx memory exists throughout the packet
sending process, so replace the req with the qp_ctx.
Fixes: f0ae287c50 ("crypto: hisilicon/sec2 - implement full backlog mode for sec")
Signed-off-by: Wenkai Lin <linwenkai6@hisilicon.com>
Signed-off-by: Chenghai Huang <huangchenghai2@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Many functions in cryptd.c no longer have any caller. Remove them.
Also remove several associated structs and includes. Finally, inline
cryptd_shash_desc() into its only caller, allowing it to be removed too.
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Econet SoCs feature an integrated EIP93 in revision 3.0p1. It is identical
to the one used by the Airoha AN7581 and the MediaTek MT7621. Ahmed reports
that the EN7528 passes testmgr's self-tests. This driver should also work
on other little endian Econet SoCs.
CC: Ahmed Naseef <naseefkm@gmail.com>
Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
Reviewed-by: Antoine Tenart <atenart@kernel.org>
Tested-by: Ahmed Naseef <naseefkm@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
AES-CCM is an AEAD algorithm supporting both encryption and
authentication of data. This patch introduces support for AES-CCM AEAD
algorithm in the DTHEv2 driver.
Signed-off-by: T Pratham <t-pratham@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
AES-GCM is an AEAD algorithm supporting both encryption and
authentication of data. This patch introduces support for AES-GCM as the
first AEAD algorithm supported by the DTHEv2 driver.
Signed-off-by: T Pratham <t-pratham@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Use list_first_entry_or_null() to simplify stm32_cryp_find_dev() and
remove the now-unused local variable 'struct stm32_cryp *tmp'.
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Kees Cook <kees@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Use list_first_entry_or_null() to simplify stm32_hash_find_dev() and
remove the now-unused local variable 'struct stm32_hash_dev *tmp'.
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Test vectors were generated starting from existing RFC3686(CTR(AES)) test
vectors and adding HMAC(MD5) computed with software implementation.
Then, the results were double-checked on Mediatek MT7986 (safexcel).
Platform pass self-tests.
Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Anti-Rollback (ARB) is a QAT GEN6 hardware feature that prevents loading
firmware with a Security Version Number (SVN) lower than an authorized
minimum. This protects against downgrade attacks by ensuring that only
firmware at or above a committed SVN can run on the acceleration device.
During firmware loading, the driver checks the SVN validation status via
a hardware CSR. If the check reports a failure, firmware authentication
is aborted. If it reports a retry status, the driver reissues the
authentication command up to a maximum number of retries.
Extend the firmware admin interface with two new messages,
ICP_QAT_FW_SVN_READ and ICP_QAT_FW_SVN_COMMIT, to query and commit the
SVN, respectively. Integrate the SVN check into the firmware
authentication path in qat_uclo.c so the driver can react to
anti-rollback status during device bring-up.
Expose SVN information to userspace via a new sysfs attribute group,
qat_svn, under the PCI device directory. The group provides read-only
attributes for the active, enforced minimum, and permanent minimum SVN
values, as well as a write-only commit attribute that allows a system
administrator to commit the currently active SVN as the new authorized
minimum.
This is based on earlier work by Ciunas Bennett.
Signed-off-by: Suman Kumar Chakraborty <suman.kumar.chakraborty@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Use print_hex_dump_devel() for dumping sensitive HMAC key bytes in
hash_digest_key() to avoid leaking secrets at runtime when
CONFIG_DYNAMIC_DEBUG is enabled.
Fixes: 045e36780f ("crypto: caam - ahash hmac support")
Fixes: 3f16f6c9d6 ("crypto: caam/qi2 - add support for ahash algorithms")
Cc: stable@vger.kernel.org
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Add print_hex_dump_devel() as the hex dump equivalent of pr_devel(),
which emits output only when DEBUG is enabled, but keeps call sites
compiled otherwise.
Suggested-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: John Ogness <john.ogness@linutronix.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Add the __counted_by() compiler attribute to the flexible array member
'group' to improve access bounds-checking via CONFIG_UBSAN_BOUNDS and
CONFIG_FORTIFY_SOURCE.
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Replace memset() followed by memcpy() with memcpy_and_pad() to simplify
the code and to write to 'cache' only once.
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Replace multiple for loops with calls to crypto_unregister_ahashes() and
crypto_unregister_skciphers().
If crypto_register_skcipher() fails in s5p_aes_probe(), log the error
directly instead of checking 'i < ARRAY_SIZE(algs)' later. Also drop
now-unused local index variables. No functional changes.
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Reviewed-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Setting up the interface when suspended/resumeing fail on this card.
Adding a reset and delay quirk will eliminate this problem.
usb 1-1: new full-speed USB device number 2 using xhci-hcd
usb 1-1: New USB device found, idVendor=001f, idProduct=0b23
usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1: Product: AB17X USB Audio
usb 1-1: Manufacturer: Generic
usb 1-1: SerialNumber: 20241228172028
Signed-off-by: Lianqin Hu <hulianqin@vivo.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/PUZPR06MB6224CA59AD2B26054120B276D249A@PUZPR06MB6224.apcprd06.prod.outlook.com
Refactor the futex atomic operations using ll/sc instructions in
preparation for FEAT_LSUI support. In addition, use named operands for
the inline asm.
No functional change.
Signed-off-by: Yeoreum Yun <yeoreum.yun@arm.com>
[catalin.marinas@arm.com: remove unnecessary stringify.h include]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
HP Laptop 15-fd0xxx with ALC236 codec does not handle the toggling of
the mute LED.
This patch adds a quirk entry for subsystem ID 0x8dd7 using
ALC236_FIXUP_HP_MUTE_LED_COEFBIT2 fixup, enabling correct mute LED
behavior.
Signed-off-by: Kshamendra Kumar Mishra <kshamendrakumarmishra@gmail.com>
Link: https://patch.msgid.link/DHAB51ISUM96.2K9SZIABIDEQ0@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The HP Pavilion 15-eg0xxx with subsystem ID 0x103c87cb uses a Realtek
ALC287 codec with a mute LED wired to GPIO pin 4 (mask 0x10). The
existing ALC287_FIXUP_HP_GPIO_LED fixup already handles this correctly,
but the subsystem ID was missing from the quirk table.
GPIO pin confirmed via manual hda-verb testing:
hda-verb SET_GPIO_MASK 0x10
hda-verb SET_GPIO_DIRECTION 0x10
hda-verb SET_GPIO_DATA 0x10
Signed-off-by: César Montoya <sprit152009@gmail.com>
Link: https://patch.msgid.link/20260321153603.12771-1-sprit152009@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
On the HP EliteBoard G1a platform (models without a headphone jack).
the speaker mute LED failed to function. The Sysfs ctl-led info showed
empty values because the standard LED registration couldn't correctly
bind to the master switch.
Adding this patch will fix and enable the speaker mute LED feature.
Tested-by: Chris Chiu <chris.chiu@canonical.com>
Signed-off-by: Kailang Yang <kailang@realtek.com>
Link: https://lore.kernel.org/279e929e884849df84687dbd67f20037@realtek.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Currently, the mmc_host_class_dev_pm_ops and its callback
functions are wrapped in #ifdef CONFIG_PM_SLEEP to handle the
conditional compilation when PM support is disabled.
Replace this #ifdef usage with the standard pm_ptr() helpers. This
allows the compiler to automatically optimize away the unused code
paths when CONFIG_PM_SLEEP is not selected, resulting in cleaner and
more maintainable code.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The 'enable-sdio-wakeup' device tree property was marked as legacy and
superseded by the standard 'wakeup-source' property in commit 71a0151c5c
("Documentation: devicetree: fix reference to legacy wakeup properties")
back in 2015.
Since it has been a decade and the migration to the standard property
has long been completed, remove this obsolete legacy support.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Simplifies allocations by using a flexible array member in these structs.
Add __counted_by to get extra runtime analysis.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This is two week's worth of fixes and quirks so it's a bit larger than
you might expect, there's nothing too exciting individually and nothing
in core code.
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Merge tag 'asoc-fix-v7.0-rc5' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v7.0
This is two week's worth of fixes and quirks so it's a bit larger than
you might expect, there's nothing too exciting individually and nothing
in core code.
Update header inclusions to follow IWYU (Include What You Use)
principle.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
linedisp_release() currently retrieves the enclosing struct linedisp via
to_linedisp(). That lookup depends on the attachment list, but the
attachment may already have been removed before put_device() invokes the
release callback. This can happen in linedisp_unregister(), and can also
be reached from some linedisp_register() error paths.
In that case, to_linedisp() returns NULL and linedisp_release()
dereferences it while freeing the display resources.
The struct device released here is the embedded linedisp->dev used by
linedisp_register(), so retrieve the enclosing object directly with
container_of() instead.
Fixes: 66c9380948 ("auxdisplay: linedisp: encapsulate container_of usage within to_linedisp")
Cc: stable@vger.kernel.org
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
After enabling CONFIG_GCOV_KERNEL and CONFIG_GCOV_PROFILE_ALL, following
build failure is observed under GCC 14.2.1:
In function 'amdv1pt_install_leaf_entry',
inlined from '__do_map_single_page' at drivers/iommu/generic_pt/fmt/../iommu_pt.h:650:3,
inlined from '__map_single_page0' at drivers/iommu/generic_pt/fmt/../iommu_pt.h:661:1,
inlined from 'pt_descend' at drivers/iommu/generic_pt/fmt/../pt_iter.h:391:9,
inlined from '__do_map_single_page' at drivers/iommu/generic_pt/fmt/../iommu_pt.h:657:10,
inlined from '__map_single_page1.constprop' at drivers/iommu/generic_pt/fmt/../iommu_pt.h:661:1:
././include/linux/compiler_types.h:706:45: error: call to '__compiletime_assert_71' declared with attribute error: FIELD_PREP: value too large for the field
706 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
|
......
drivers/iommu/generic_pt/fmt/amdv1.h:220:26: note: in expansion of macro 'FIELD_PREP'
220 | FIELD_PREP(AMDV1PT_FMT_OA,
| ^~~~~~~~~~
In the path '__do_map_single_page()', level 0 always invokes
'pt_install_leaf_entry(&pts, map->oa, PAGE_SHIFT, …)'. At runtime that
lands in the 'if (oasz_lg2 == isz_lg2)' arm of 'amdv1pt_install_leaf_entry()';
the contiguous-only 'else' block is unreachable for 4 KiB pages.
With CONFIG_GCOV_KERNEL + CONFIG_GCOV_PROFILE_ALL, the extra
instrumentation changes GCC's inlining so that the "dead" 'else' branch
still gets instantiated. The compiler constant-folds the contiguous OA
expression, runs the 'FIELD_PREP()' compile-time check, and produces:
FIELD_PREP: value too large for the field
gcov-enabled builds therefore fail even though the code path never executes.
Fix this by marking amdv1pt_install_leaf_entry as __always_inline.
Fixes: dcd6a011a8 ("iommupt: Add map_pages op")
Suggested-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sherry Yang <sherry.yang@oracle.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
