Add new compatible for MSM8998 (compatible with MSM8996) to allow further
customizing if needed and to accurately describe the hardware.
Link: https://lore.kernel.org/r/20230106081203.14118-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rob Herring <robh@kernel.org>
Add a missing NULL pointer check to the cpufreq drver for Qualcomm
platforms (Manivannan Sadhasivam).
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Merge tag 'pm-6.2-rc9' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fix from Rafael Wysocki:
"Add a missing NULL pointer check to the cpufreq drver for Qualcomm
platforms (Manivannan Sadhasivam)"
* tag 'pm-6.2-rc9' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: qcom-hw: Add missing null pointer check
Clean up config files by:
- removing configs that were deleted in the past
- removing configs not in tree and without recently pending patches
- adding new configs that are replacements for old configs in the file
For some detailed information, see Link.
Link: https://lore.kernel.org/kernel-janitors/20220929090645.1389-1-lukas.bulwahn@gmail.com/
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Previously, R_ALPHA_LITERAL relocations would overflow for large kernel
modules.
This was because the Alpha's apply_relocate_add was relying on the kernel's
module loader to have sorted the GOT towards the very end of the module as it
was mapped into memory in order to correctly assign the global pointer. While
this behavior would mostly work fine for small kernel modules, this approach
would overflow on kernel modules with large GOT's since the global pointer
would be very far away from the GOT, and thus, certain entries would be out of
range.
This patch fixes this by instead using the Tru64 behavior of assigning the
global pointer to be 32KB away from the start of the GOT. The change made
in this patch won't work for multi-GOT kernel modules as it makes the
assumption the module only has one GOT located at the beginning of .got,
although for the vast majority kernel modules, this should be fine. Of the
kernel modules that would previously result in a relocation error, none of
them, even modules like nouveau, have even come close to filling up a single
GOT, and they've all worked fine under this patch.
Signed-off-by: Edward Humes <aurxenon@lunos.org>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Add a space after ','.
Add spaces around the '=', '>' and '=='.
Signed-off-by: Zhang Jiaming <jiaming@nfschina.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Reference to other arch likes x86_64 or arm64 to do this replacement.
To solve compile error when using NR_syscalls in kernel[1].
[1] https://lore.kernel.org/all/202203270449.WBYQF9X3-lkp@intel.com/
Signed-off-by: Yang Yang <yang.yang29@zte.com.cn>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Remove a number of asm headers locally redirected to the respective
generic or generated versions.
For asm-offsets.h all that is needed is a Kbuild entry for the generic
version, and for div64.h, irq_regs.h and kdebug.h nothing is needed as
in their absence they will be redirected automatically according to
include/asm-generic/Kbuild.
Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: Matt Turner <mattst88@gmail.com>
To follow the existing per-arch conventions replace open-coded use
of asm "$30" as "current_stack_pointer". This will let it be used in
non-arch places (like HARDENED_USERCOPY).
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: "Alexander A. Klimov" <grandmaster@al2klimov.de>
Cc: linux-alpha@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Return value from __hw_perf_event_init() directly instead
of taking this in another redundant variable.
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn>
Signed-off-by: CGEL ZTE <cgel.zte@gmail.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Calling the osf_mount system call with an invalid typenr value will
spam the kernel log with error messages. Reduce the spamming by making
it a ratelimited printk. Issue found when exercising with the stress-ng
enosys system call stressor.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>
predictions bug. When running in SMT mode and one of the sibling threads
transitions out of C0 state, the other thread gets access to twice as many
entries in the RSB, but unfortunately the predictions of the now-halted
logical processor are not purged. Therefore, the executing processor
could speculatively execute from locations that the now-halted processor
had trained the RSB on.
The Spectre v2 mitigations cover the Linux kernel, as it fills the RSB
when context switching to the idle thread. However, KVM allows a VMM to
prevent exiting guest mode when transitioning out of C0 using the
KVM_CAP_X86_DISABLE_EXITS capability can be used by a VMM to change this
behavior. To mitigate the cross-thread return address predictions bug,
a VMM must not be allowed to override the default behavior to intercept
C0 transitions.
These patches introduce a KVM module parameter that, if set, will prevent
the user from disabling the HLT, MWAIT and CSTATE exits.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"Certain AMD processors are vulnerable to a cross-thread return address
predictions bug. When running in SMT mode and one of the sibling
threads transitions out of C0 state, the other thread gets access to
twice as many entries in the RSB, but unfortunately the predictions of
the now-halted logical processor are not purged. Therefore, the
executing processor could speculatively execute from locations that
the now-halted processor had trained the RSB on.
The Spectre v2 mitigations cover the Linux kernel, as it fills the RSB
when context switching to the idle thread. However, KVM allows a VMM
to prevent exiting guest mode when transitioning out of C0 using the
KVM_CAP_X86_DISABLE_EXITS capability can be used by a VMM to change
this behavior. To mitigate the cross-thread return address predictions
bug, a VMM must not be allowed to override the default behavior to
intercept C0 transitions.
These patches introduce a KVM module parameter that, if set, will
prevent the user from disabling the HLT, MWAIT and CSTATE exits"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
Documentation/hw-vuln: Add documentation for Cross-Thread Return Predictions
KVM: x86: Mitigate the cross-thread return address predictions bug
x86/speculation: Identify processors vulnerable to SMT RSB predictions
Convert Qualcomm G-Link RPM edge binding to DT schema. Move it to
remoteproc as it better suits the purpose - communication channel with
remote processor.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230208101545.45711-6-krzysztof.kozlowski@linaro.org
Correct CDSP and MPSS power domains to match what is used in DTS and the
Linux driver:
sm8550-mtp.dtb: remoteproc@32300000: power-domain-names: ['cx', 'mxc', 'nsp'] is too long
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Neil Armstrong <neil.armstrong@linaro.org>
Fixes: 084258d607 ("dt-bindings: remoteproc: qcom: adsp: document sm8550 adsp, cdsp & mpss compatible")
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230206193313.30667-1-krzysztof.kozlowski@linaro.org
This documents the aDSP, cDSP and MPSS DSPs present
on the SM6115 SoC.
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230128053504.2099620-2-bhupesh.sharma@linaro.org
Among the subsystems in the Qualcomm sm6115 platform we find
audio, compute and modem DSPs.
Add support for controlling these using the peripheral
authentication service (PAS) remoteproc driver.
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
Reviewed-by: Mukesh Ojha <quic_mojha@quicinc.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230128053504.2099620-1-bhupesh.sharma@linaro.org
The minidump table in the toc contains physical addresses that may lie
before the physical address of the first elf segment in relocatable
images. This change adds a custom dump function for minidumps which
calculates the offset into the carveout region using the start of
the physical address instead of the start of the first elf segment.
Signed-off-by: Yogesh Lal <quic_ylal@quicinc.com>
Reviewed-by: Sibi Sankar <quic_sibis@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/1667409129-6254-1-git-send-email-quic_ylal@quicinc.com
Reportedly, clang cannot do interprocedural analysis:
https://lore.kernel.org/r/20230213-amd64_edac-wsometimes-uninitialized-v1-1-5bde32b89e02@kernel.org
and see that those arguments won't be used uninitialized.
So, yeah, the code's fine even without this. Normally, such a "fix"
won't be applied but that warning gets automatically enabled in -Wall
builds and when CONFIG_WERROR is set in allmodconfig builds, the build
fails.
So shut it up with a minimal fix as this code will see more
reorganization very soon.
[ bp: Write commit message. ]
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/Y%2BqdVHidnrrKvxiD@dev-arch.thelio-3990X
When device_hmem.o is enabled but dax itself is a loadable module, the
dax_hmem support fails to link because Kbuild never compiles built-in
code under drivers/dax:
ERROR: modpost: "walk_hmem_resources" [drivers/dax/hmem/dax_hmem.ko] undefined!
Make sure that drivers/dax is entered for compiling built-in code
even with CONFIG_DAX=m.
Fixes: 7dab174e2e ("dax/hmem: Move hmem device registration to dax_hmem.ko")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20230214131913.1431969-1-arnd@kernel.org
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
There is already a dependency on CXL_REGION, which depends on CXL_BUS,
but since CXL_REGION is a 'bool' symbol, it's possible to configure
DAX as built-in even though CXL itself is a loadable module:
x86_64-linux-ld: drivers/dax/cxl.o: in function `cxl_dax_region_probe':
cxl.c:(.text+0xb): undefined reference to `to_cxl_dax_region'
x86_64-linux-ld: drivers/dax/cxl.o: in function `cxl_dax_region_driver_init':
cxl.c:(.init.text+0x10): undefined reference to `__cxl_driver_register'
x86_64-linux-ld: drivers/dax/cxl.o: in function `cxl_dax_region_driver_exit':
cxl.c:(.exit.text+0x9): undefined reference to `cxl_driver_unregister'
Prevent this with another depndency on the tristate symbol.
Fixes: 09d09e04d2 ("cxl/dax: Create dax devices for CXL RAM regions")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20230214103054.1082908-1-arnd@kernel.org
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The new cxl_add_to_region() function returns an uninitialized
value on success:
drivers/cxl/core/region.c:2628:6: error: variable 'rc' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized]
if (IS_ERR(cxlr)) {
^~~~~~~~~~~~
drivers/cxl/core/region.c:2654:9: note: uninitialized use occurs here
return rc;
Simplify the logic to have the rc variable always initialized in the
same place.
Fixes: a32320b71f ("cxl/region: Add region autodiscovery")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20230213101220.3821689-1-arnd@kernel.org
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Since, there is no guarantee that region.name will be 0-terminated
from the firmware side, replace kstrdup with kstrndup.
Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Mukesh Ojha <quic_mojha@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/1676383691-29738-1-git-send-email-quic_mojha@quicinc.com
During removal of the glink edge interrupts are disabled and no more
incoming messages are being serviced. In addition to the remote endpoint
being defunct that means that any outstanding requests for intents will
not be serviced, and qcom_glink_request_intent() will blindly wait for
up to 10 seconds.
Mark the intent request as not granted and complete the intent request
completion to fail the waiting client immediately.
Once the current intent request is failed, any potential clients waiting
for the intent request mutex will not enter the same wait, as the
qcom_glink_tx() call will fail fast.
Reviewed-by: Chris Lew <quic_clew@quicinc.com>
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230213155215.1237059-7-quic_bjorande@quicinc.com
Upon removing the glink edge, communication is at best one-way. This
means that the very common scenario of glink requesting intents will not
be possible to serve.
Typically a successful transmission results in the client waiting for a
response, with some timeout and a mechanism for aborting that timeout.
Because of this, once the glink edge is defunct once removal is
commenced it's better to fail transmissions fast.
Reviewed-by: Chris Lew <quic_clew@quicinc.com>
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230213155215.1237059-6-quic_bjorande@quicinc.com
Not all GLINK transports uses an interrupt and a mailbox instance. The
interrupt for RPM needs to be IRQF_NOSUSPEND, while it seems reasonable
for the SMEM interrupt to use irq_set_wake. The glink struct device is
constructed in the SMEM and RPM drivers but torn down in the core
driver.
Move the interrupt and kick handling into the SMEM and RPM driver, to
improve this and facilitate further improvements.
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Reviewed-by: Chris Lew <quic_clew@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230213155215.1237059-5-quic_bjorande@quicinc.com
As with the SMEM driver update, wrap the RPM context in a struct to
facilitate the upcoming changes of moving IRQ and mailbox registration
to the driver.
Reviewed-by: Chris Lew <quic_clew@quicinc.com>
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230213155215.1237059-4-quic_bjorande@quicinc.com
The Glink SMEM driver allocates a struct device and hangs two
devres-allocated pipe objects thereon. To facilitate the move of
interrupt and mailbox handling to the driver, introduce a wrapper object
capturing the device, glink reference and remote processor id.
The type of the remoteproc reference is updated, as these are
specifically targeting the SMEM implementation.
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Reviewed-by: Chris Lew <quic_clew@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230213155215.1237059-3-quic_bjorande@quicinc.com
Refactor out the tx kick operations to its own function, in preparation
for pushing the details to the individual transports.
Reviewed-by: Chris Lew <quic_clew@quicinc.com>
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230213155215.1237059-2-quic_bjorande@quicinc.com
Since commit ee6d3dd4ed ("driver core: make kobj_type constant.")
the driver core allows the usage of const struct kobj_type.
Take advantage of this to constify the structure definitions to prevent
modification at runtime.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Clarify the Explicit and Implicit meanings in the table of Pull Bias.
While at it, distinguish pull bias keywords used in ACPI by using bold
font in the table of the respective terms.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
For some reason, the drivers/base/class.c file still had the "old style"
of exports, at the end of the file. Move the exports to the proper
location, right after the function, to be correct.
Reviewed-by: Rafael J. Wysocki <rafael@kernel.org>
Link: https://lore.kernel.org/r/20230214144117.158956-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
- Add missing 'cache-unified' property in example for kryo OPP bindings
(Rob Herring).
- Fix error checking in opp_migrate_dentry() (Qi Zheng).
- Remove "select SRCU" (Paul E. McKenney).
- Let qcom,opp-fuse-level be a 2-long array for qcom SoCs (Konrad
Dybcio).
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Merge tag 'opp-updates-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm
Pull OPP (Operating Performance Points) updates for 6.3 from Viresh
Kumar:
"- Add missing 'cache-unified' property in example for kryo OPP bindings
(Rob Herring).
- Fix error checking in opp_migrate_dentry() (Qi Zheng).
- Remove "select SRCU" (Paul E. McKenney).
- Let qcom,opp-fuse-level be a 2-long array for qcom SoCs (Konrad
Dybcio)."
* tag 'opp-updates-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm:
OPP: fix error checking in opp_migrate_dentry()
dt-bindings: opp: v2-qcom-level: Let qcom,opp-fuse-level be a 2-long array
drivers/opp: Remove "select SRCU"
dt-bindings: opp: opp-v2-kryo-cpu: Add missing 'cache-unified' property in example
- Enable thermal cooling for Tegra194 (Yi-Wei Wang).
- Register module device table and add missing compatibles for
cpufreq-qcom-hw (Nícolas F. R. A. Prado, Abel Vesa and Luca Weiss).
- Various dt binding updates for qcom-cpufreq-nvmem and opp-v2-kryo-cpu
(Christian Marangi).
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Merge tag 'cpufreq-arm-updates-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm
Pull cpufreq ARM updates for 6.3 from Viresh Kumar:
"- Enable thermal cooling for Tegra194 (Yi-Wei Wang).
- Register module device table and add missing compatibles for
cpufreq-qcom-hw (Nícolas F. R. A. Prado, Abel Vesa and Luca Weiss).
- Various dt binding updates for qcom-cpufreq-nvmem and opp-v2-kryo-cpu
(Christian Marangi)."
* tag 'cpufreq-arm-updates-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm:
dt-bindings: opp: opp-v2-kryo-cpu: enlarge opp-supported-hw maximum
dt-bindings: cpufreq: qcom-cpufreq-nvmem: make cpr bindings optional
dt-bindings: cpufreq: qcom-cpufreq-nvmem: specify supported opp tables
dt-bindings: cpufreq: cpufreq-qcom-hw: Add SM8550 compatible
dt-bindings: cpufreq: cpufreq-qcom-hw: Add missing compatibles
cpufreq: mediatek-hw: Register to module device table
cpufreq: tegra194: Enable CPUFREQ thermal cooling
Smatch warns:
drivers/mtd/ubi/block.c:438 ubiblock_create()
warn: '&dev->list' not removed from list
'dev' is freed in 'out_free_dev:, but it is still on the list.
To fix this, delete the list item before freeing.
Fixes: 91cc8fbcc8 ("ubi: block: set BLK_MQ_F_BLOCKING")
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
On HP Laptops, requires the ALC245_FIXUP_CS35L41_SPI_2_HP_GPIO_LED quirk to
make its audio LEDs and speaker work.
Signed-off-by: Andy Chi <andy.chi@canonical.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20230214140432.39654-1-andy.chi@canonical.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
To ensure firmware for cs35l41 is correctly running, it is necessary
that a corresponding tuning file is also loaded. Without both,
the firmware may not be performing correctly
Ensure that if we load the firmware, we have also loaded the correct
tuning file. Otherwise, fall back to default firmware and tuning.
If default tuning is also missing, then disable DSP firmware.
Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230213145008.1215849-3-sbinding@opensource.cirrus.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Function cs_dsp_coeff_write_ctrl() can return 3 possible values:
0 - no change, 1 - value has changed and -1 - error, so positive value
is not an error.
Fixes: 7406bdbc4f ("ASoC: wm_adsp: Return whether changed when writing controls")
Signed-off-by: Vitaly Rodionov <vitalyr@opensource.cirrus.com>
Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230213145008.1215849-2-sbinding@opensource.cirrus.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Fixes in drivers for:
- Binding fix for g12a phys
- Kconfig operator precedence for TI driver
- renesas: register setting
- sunplus: null deref fix
- rockchip-inno fix for clk_disable_unprepare()
- MDM9607 init sequence revert due to regression
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Merge tag 'phy-fixes-6.2' into next
Merge fixes tag pulled into mainline by Linus into phy/next due to
dependency on amlogic patches
The existing logic in tcphy_get_mode() can cause the phy to be
incorrectly configured to USB UFP or DisplayPort mode when
extcon_get_state returns an error code.
extcon_get_state() can return 0, 1, or a negative error code.
It is possible to get into the failing state with an extcon driver
which does not support the extcon connector id specified as the
second argument to extcon_get_state().
tcphy_get_mode()
->extcon_get_state()
-->find_cable_index_by_id()
--->return -EINVAL;
Fixes: e96be45cb8 ("phy: Add USB Type-C PHY driver for rk3399")
Signed-off-by: Neill Kapron <nkapron@google.com>
Reviewed-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20230126001013.3707873-1-nkapron@google.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The ieee80211_accept_frame() function performs a number of early checks
to decide whether or not further processing needs to be done on a frame.
One of those checks is the ieee80211_is_robust_mgmt_frame() function.
It requires to peek into the frame payload, but because defragmentation
does not occur until later on in the receive path, this peek is invalid
for any fragment other than the first one. Also, in this scenario there
is no STA and so the fragmented frame will be dropped later on in the
process and will not reach the upper stack. This can happen with large
action frames at low rates, for example, we see issues with DPP on S1G.
This change will only check if the frame is robust if it's the first
fragment. Invalid fragmented packets will be discarded later after
defragmentation is completed.
Signed-off-by: Gilad Itzkovitch <gilad.itzkovitch@morsemicro.com>
Link: https://lore.kernel.org/r/20221124005336.1618411-1-gilad.itzkovitch@morsemicro.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
gcc-9 triggers a false-postive warning in ieee80211_mlo_multicast_tx()
for u32_encode_bits(ffs(links) - 1, ...), since ffs() can return zero
on an empty bitmask, and the negative argument to u32_encode_bits()
is then out of range:
In file included from include/linux/ieee80211.h:21,
from include/net/cfg80211.h:23,
from net/mac80211/tx.c:23:
In function 'u32_encode_bits',
inlined from 'ieee80211_mlo_multicast_tx' at net/mac80211/tx.c:4437:17,
inlined from 'ieee80211_subif_start_xmit' at net/mac80211/tx.c:4485:3:
include/linux/bitfield.h:177:3: error: call to '__field_overflow' declared with attribute error: value doesn't fit into mask
177 | __field_overflow(); \
| ^~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:197:2: note: in expansion of macro '____MAKE_OP'
197 | ____MAKE_OP(u##size,u##size,,)
| ^~~~~~~~~~~
include/linux/bitfield.h:200:1: note: in expansion of macro '__MAKE_OP'
200 | __MAKE_OP(32)
| ^~~~~~~~~
Newer compiler versions do not cause problems with the zero argument
because they do not consider this a __builtin_constant_p().
It's also harmless since the hweight16() check already guarantees
that this cannot be 0.
Replace the ffs() with an equivalent find_first_bit() check that
matches the later for_each_set_bit() style and avoids the warning.
Fixes: 963d0e8d08 ("wifi: mac80211: optionally implement MLO multicast TX")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20230214132025.1532147-1-arnd@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Consider a case where gserial_disconnect has already cleared
gser->ioport. And if a wakeup interrupt triggers afterwards,
gserial_resume gets called, which will lead to accessing of
gser->ioport and thus causing null pointer dereference.Add
a null pointer check to prevent this.
Added a static spinlock to prevent gser->ioport from becoming
null after the newly added check.
Fixes: aba3a8d01d ("usb: gadget: u_serial: add suspend resume callbacks")
Cc: stable <stable@kernel.org>
Signed-off-by: Prashanth K <quic_prashk@quicinc.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/1676309438-14922-1-git-send-email-quic_prashk@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If kstrtou8() fails, the mutex_unlock() is missed, move kstrtou8()
before mutex_lock() to fix it up.
Fixes: 0525210c98 ("usb: gadget: uvc: Allow definition of XUs in configfs")
Fixes: b3c839bd8a ("usb: gadget: uvc: Make bSourceID read/write")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20230213070926.776447-1-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
