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Add a basic test for exercising modifying the entities scheduler list at
runtime.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Philipp Stanner <phasta@kernel.org>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Philipp Stanner <phasta@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250324092633.49746-6-tvrtko.ursulin@igalia.com
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Add some basic tests for exercising entity priority handling.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Philipp Stanner <phasta@kernel.org>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Philipp Stanner <phasta@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250324092633.49746-5-tvrtko.ursulin@igalia.com
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Add a very simple timeout test which submits a single job and verifies
that the timeout handling will run if the backend failed to complete the
job in time.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Philipp Stanner <phasta@kernel.org>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Philipp Stanner <phasta@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250324092633.49746-4-tvrtko.ursulin@igalia.com
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Implement a mock scheduler backend and add some basic test to exercise the
core scheduler code paths.
Mock backend (kind of like a very simple mock GPU) can either process jobs
by tests manually advancing the "timeline" job at a time, or alternatively
jobs can be configured with a time duration in which case they get
completed asynchronously from the unit test code.
Core scheduler classes are subclassed to support this mock implementation.
The tests added are just a few simple submission patterns.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Suggested-by: Philipp Stanner <phasta@kernel.org>
Cc: Christian König <christian.koenig@amd.com>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Philipp Stanner <phasta@kernel.org>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Philipp Stanner <phasta@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250324092633.49746-3-tvrtko.ursulin@igalia.com
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Move some options out into a new debug specific kconfig file in order to
make things a bit cleaner.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Philipp Stanner <phasta@kernel.org>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Philipp Stanner <phasta@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250324092633.49746-2-tvrtko.ursulin@igalia.com
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It seems there really exists the need for a simple sysfs interface that
can be easily used from minimal initramfs images that don't contain much
more than busybox. However the current interface poses a challenge to
the removal of global GPIO numberspace. Add an item that tracks
extending the existing ABI with a per-chip export/unexport attribute
pair.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250321-gpio-todo-updates-v1-6-7b38f07110ee@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Add an item tracking the treewide conversion of GPIO drivers to using
the new line value setter callbacks in struct gpio_chip instead of the
old ones that don't allow drivers to signal failures to callers.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250321-gpio-todo-updates-v1-5-7b38f07110ee@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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For better readability of the TODO, let's add some graphical delimiters
between tasks.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250321-gpio-todo-updates-v1-4-7b38f07110ee@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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While there are surely some arguments in favor of integrating the GPIO
and pinctrl subsystems into one, I believe this is not the right
approach.
The GPIO subsystem uses intricate locking with SRCU to handle the fact
that both consumers and providers may run in different contexts.
Pin-controller drivers are always meant to run in process context. This
alone is a huge obstacle to any attempt at integration as evident by
many problems we already encountered during the hotplug rework.
The current glue code is pretty minimal and for most part already allows
GPIO controllers to query pinctrl about the information they need.
I suggest to drop this task and keep the subsystems separate even if
many pin-controllers implement GPIO functionality in addition to pin
functions.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250321-gpio-todo-updates-v1-3-7b38f07110ee@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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The removal of linux/gpio.h is already tracked by the item about
converting drivers to using the descriptor-based API. Remove the
duplicate.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250321-gpio-todo-updates-v1-2-7b38f07110ee@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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The consensus among core GPIO stakeholders seems to be that a new
debugfs interface will only increase maintenance burden and will fail
to attract users that care about long-term stability of the ABI[1].
Let's not go this way and not add a fourth user-facing interface to the
GPIO subsystem.
[1] https://lore.kernel.org/all/9d3f1ca4-d865-45af-9032-c38cacc7fe93@pengutronix.de/
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250321-gpio-todo-updates-v1-1-7b38f07110ee@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Failing to set up connector polling is not significant enough to
fail device probing. Print a warning and return nothing from the
init helper.
This only affects the managed init function. The unmanaged init
already never fails with an error.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250303145604.62962-4-tzimmermann@suse.de
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Call drmm_kms_helper_poll_init() to set up managed cleanup for
connector polling.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250303145604.62962-3-tzimmermann@suse.de
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Disconnecting a DisplayLink device results in the following kernel
error messages
[ 93.041748] [drm:udl_urb_completion [udl]] *ERROR* udl_urb_completion - nonzero write bulk status received: -115
[ 93.055299] [drm:udl_submit_urb [udl]] *ERROR* usb_submit_urb error fffffffe
[ 93.065363] [drm:udl_urb_completion [udl]] *ERROR* udl_urb_completion - nonzero write bulk status received: -115
[ 93.078207] [drm:udl_submit_urb [udl]] *ERROR* usb_submit_urb error fffffffe
coming from KMS poll helpers. Shutting down poll helpers runs them
one final time when the USB device is already gone.
Run drm_dev_unplug() first in udl's USB disconnect handler. Udl's
polling code already handles disconnects gracefully if the device has
been marked as unplugged.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: b1a981bd5576 ("drm/udl: drop drm_driver.release hook")
Cc: dri-devel@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v5.8+
Reviewed-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250303145604.62962-2-tzimmermann@suse.de
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https://gitlab.freedesktop.org/agd5f/linux into drm-next
amd-drm-next-6.15-2025-03-21:
amdgpu:
- Refine nomodeset handling
- RAS fixes
- DCN 3.x fixes
- DMUB fixes
- eDP fixes
- SMU 14.0.2 fixes
- SMU 13.0.6 fixes
- SMU 13.0.12 fixes
- SDMA engine reset fixes
- Enforce Isolation fixes
- Runtime workload profile ref count fixes
- Documentation fixes
- SR-IOV fixes
- MES fixes
- GC 11.5 cleaner shader support
- SDMA VM invalidation fixes
- IP discovery improvements for GC based chips
amdkfd:
- Dequeue wait count fixes
- Precise memops fixes
radeon:
- Code cleanup
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250321210909.2809595-1-alexander.deucher@amd.com
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https://gitlab.freedesktop.org/agd5f/linux into drm-next
amd-drm-next-6.15-2025-03-14:
amdgpu:
- GC 12.x DCC fixes
- VCN 2.5 fix
- Replay/PSR fixes
- HPD fixes
- DMUB fixes
- Backlight fixes
- DM suspend/resume cleanup
- Misc DC fixes
- HDCP UAF fix
- Misc code cleanups
- VCE 2.x fix
- Wedged event support
- GC 12.x PTE fixes
- Misc multimedia cap fixes
- Enable unique id support for GC 12.x
- XGMI code cleanup
- GC 11.x and 12.x MQD cleanups
- SMU 13.x updates
- SMU 14.x fan speed reporting
- Enable VCN activity reporting for additional chips
- SR-IOV fixes
- RAS fixes
- MES fixes
amdkfd:
- Dequeue wait count API cleanups
- Queue eviction cleanup fixes
- Retry fault fixes
- Dequeue retry timeout adjustments
- GC 12.x trap handler fixes
- GC 9.5.x updates
radeon:
- VCE command parser fix
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250314170618.3142042-1-alexander.deucher@amd.com
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https://gitlab.freedesktop.org/drm/misc/kernel into drm-next
Short summary of fixes pull:
appletbdrm:
- Fix device refcount
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20250313180135.GA276891@linux.fritz.box
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For flexible routing, eint will be divided into 5 bases,
and it will obtain the operation address through the pins array.
Signed-off-by: Hao Chang <ot_chhao.chang@mediatek.com>
Signed-off-by: Qingliang Li <qingliang.li@mediatek.com>
Link: https://lore.kernel.org/20250322035307.4811-2-ot_chhao.chang@mediatek.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This warning notifies a clock was set to an inaccurate value. Modify the
string to also show the clock name.
While doing that also rewrap the entire function call.
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Acked-by: Liu Ying <victor.liu@nxp.com>
Signed-off-by: Liu Ying <victor.liu@nxp.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250306-drm-two-ldb-improvements-v1-2-f139d768b92c@bootlin.com
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'ret' can only be 0 at this point, being preceded by a 'if (ret) return
ret;'. So return 0 for clarity.
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Reviewed-by: Liu Ying <victor.liu@nxp.com>
Signed-off-by: Liu Ying <victor.liu@nxp.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250306-drm-two-ldb-improvements-v1-1-f139d768b92c@bootlin.com
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In addition to the standard reset controller, V3D 7.x requires configuring
the V3D_SMS registers for proper power on/off and reset. Add the new
registers to `v3d_regs.h` and ensure they are properly configured during
device probing, removal, and reset.
This change fixes GPU reset issues on the Raspberry Pi 5 (BCM2712).
Without exposing these registers, a GPU reset causes the GPU to hang,
stopping any further job execution and freezing the desktop GUI. The same
issue occurs when unloading and loading the v3d driver.
Link: https://github.com/raspberrypi/linux/issues/6660
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Signed-off-by: Maíra Canal <mcanal@igalia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250317-v3d-gpu-reset-fixes-v6-5-f3ee7717ed17@igalia.com
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The V3D driver currently determines the GPU tech version (33, 41...)
by reading a register. This approach has worked so far since this
information wasn’t needed before powering on the GPU.
V3D 7.1 introduces new registers that must be written to power on the
GPU, requiring us to know the V3D version beforehand. To address this,
associate each supported SoC with the corresponding VideoCore GPU version
as part of the device data.
To prevent possible mistakes, add an assertion to verify that the version
specified in the device data matches the one reported by the hardware.
If there is a mismatch, the kernel will trigger a warning.
With the goal of maintaining consistency around the driver, use `enum
v3d_gen` to assign values to `v3d->ver` and for comparisons with other
V3D generations. Note that all mentions of unsupported or non-existing V3D
generations (such as V3D 4.0) were removed by this commit and replaced
with supported generations without functional changes.
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Reviewed-by: Stefan Wahren <wahrenst@gmx.net>
Signed-off-by: Maíra Canal <mcanal@igalia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250317-v3d-gpu-reset-fixes-v6-1-f3ee7717ed17@igalia.com
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When BIOS neglects to assign bus numbers to PCI bridges, the kernel
attempts to correct that during PCI device enumeration. If it runs out
of bus numbers, no pci_bus is allocated and the "subordinate" pointer in
the bridge's pci_dev remains NULL.
The PCIe bandwidth controller erroneously does not check for a NULL
subordinate pointer and dereferences it on probe.
Bandwidth control of unusable devices below the bridge is of questionable
utility, so simply error out instead. This mirrors what PCIe hotplug does
since commit 62e4492c3063 ("PCI: Prevent NULL dereference during pciehp
probe").
The PCI core emits a message with KERN_INFO severity if it has run out of
bus numbers. PCIe hotplug emits an additional message with KERN_ERR
severity to inform the user that hotplug functionality is disabled at the
bridge. A similar message for bandwidth control does not seem merited,
given that its only purpose so far is to expose an up-to-date link speed
in sysfs and throttle the link speed on certain laptops with limited
Thermal Design Power. So error out silently.
User-visible messages:
pci 0000:16:02.0: bridge configuration invalid ([bus 00-00]), reconfiguring
[...]
pci_bus 0000:45: busn_res: [bus 45-74] end is updated to 74
pci 0000:16:02.0: devices behind bridge are unusable because [bus 45-74] cannot be assigned for them
[...]
pcieport 0000:16:02.0: pciehp: Hotplug bridge without secondary bus, ignoring
[...]
BUG: kernel NULL pointer dereference
RIP: pcie_update_link_speed
pcie_bwnotif_enable
pcie_bwnotif_probe
pcie_port_probe_service
really_probe
Fixes: 665745f27487 ("PCI/bwctrl: Re-add BW notification portdrv as PCIe BW controller")
Reported-by: Wouter Bijlsma <wouter@wouterbijlsma.nl>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=219906
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Tested-by: Wouter Bijlsma <wouter@wouterbijlsma.nl>
Cc: stable@vger.kernel.org # v6.13+
Link: https://lore.kernel.org/r/3b6c8d973aedc48860640a9d75d20528336f1f3c.1742669372.git.lukas@wunner.de
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Update the CPM5 check to include CPM5_HOST1 variant. Previously, only
CPM5 was considered when mapping the "cpm_csr" register.
With this change, CPM5_HOST1 is also supported, ensuring proper
resource mapping for this variant.
Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
[kwilczynski: commit log]
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Link: https://lore.kernel.org/r/20250317124136.1317723-1-thippeswamy.havalige@amd.com
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Don't populate the const read-only arrays "data" and "regs" on the
stack at run time, instead make them static.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
[kwilczynski: commit log, wrap overly long line to 80 columns]
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Link: https://lore.kernel.org/r/20250317143456.477901-1-colin.i.king@gmail.com
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Add support for AMD MDB (Multimedia DMA Bridge) IP core as Root Port.
The Versal2 devices include MDB Module. The integrated block for MDB
along with the integrated bridge can function as PCIe Root Port
controller at Gen5 32-GT/s operation per lane.
Bridge supports error and INTx interrupts and are handled using platform
specific interrupt line in Versal2.
Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20250228093351.923615-4-thippeswamy.havalige@amd.com
[bhelgaas: only present on ARM64-based SoCs; squash Kconfig dependency on
ARM64 from Geert Uytterhoeven <geert+renesas@glider.be>:
https://lore.kernel.org/r/eaef1dea7edcf146aa377d5e5c5c85a76ff56bae.1742306383.git.geert+renesas@glider.be]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
[kwilczynski: commit log, code comments and error messages clean-up,
drop redundant "depends on PCI" from Kconfig, expose the error code
as part of error messages where appropriatie, change "depends on"
expression to match existing style from other drivers]
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fix from Wolfram Sang:
"Fix double free of irq in amd-mp2 driver"
* tag 'i2c-for-6.14-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: amd-mp2: drop free_irq() of devm_request_irq() allocated irq
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The kernel bots complain about untidy code found using
coccinelle, fix it up.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202503212354.Hx2qaDRe-lkp@intel.com/
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-next
Johan writes:
USB-serial update for 6.15-rc1
Here's a single USB-serial cleanup for 6.15-rc1 that's been sitting in
linux-next for a few weeks without any reported issues.
* tag 'usb-serial-6.15-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
USB: serial: mos7840: drop unused defines
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git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm
Merge ARM cpufreq updates for 6.15 from Viresh Kumar:
"- manage sysfs attributes and boost frequencies efficiently from cpufreq
core to reduce boilerplate code from drivers (Viresh Kumar).
- Minor cleanups to cpufreq drivers (Aaron Kling, Benjamin Schneider,
Dhananjay Ugwekar, Imran Shaik, and zuoqian).
- Migrate to using for_each_present_cpu (Jacky Bai).
- cpufreq-qcom-hw DT binding fixes (Krzysztof Kozlowski).
- Use str_enable_disable() helper (Lifeng Zheng)."
* tag 'cpufreq-arm-updates-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm: (59 commits)
dt-bindings: cpufreq: cpufreq-qcom-hw: Narrow properties on SDX75, SA8775p and SM8650
dt-bindings: cpufreq: cpufreq-qcom-hw: Drop redundant minItems:1
dt-bindings: cpufreq: cpufreq-qcom-hw: Add missing constraint for interrupt-names
dt-bindings: cpufreq: cpufreq-qcom-hw: Add QCS8300 compatible
cpufreq: Init cpufreq only for present CPUs
cpufreq: tegra186: Share policy per cluster
cpufreq: tegra194: Allow building for Tegra234
cpufreq: enable 1200Mhz clock speed for armada-37xx
cpufreq: Remove cpufreq_enable_boost_support()
cpufreq: staticize policy_has_boost_freq()
cpufreq: qcom: Set .set_boost directly
cpufreq: dt: Set .set_boost directly
cpufreq: scmi: Set .set_boost directly
cpufreq: powernv: Set .set_boost directly
cpufreq: loongson: Set .set_boost directly
cpufreq: apple: Set .set_boost directly
cpufreq: Restrict enabling boost on policies with no boost frequencies
cpufreq: cppc: Set policy->boost_supported
cpufreq: amd: Set policy->boost_supported
cpufreq: acpi: Set policy->boost_supported
...
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The mask operation link->flags | DL_FLAG_PM_RUNTIME is always true which
is incorrect. The mask operation should be using the bit-wise &
operator. Fix this.
Fixes: bca84a7b93fd ("PM: sleep: Use DPM_FLAG_SMART_SUSPEND conditionally")
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://patch.msgid.link/20250319114324.791829-1-colin.i.king@gmail.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Only go into the if condition for single-PD handling when there's
actually just one power domain specified there. Otherwise it'll be an
issue in the dts and we should fail in the regular code path.
This also mirrors the latest changes in the qcom_q6v5_mss driver.
Suggested-by: Stephan Gerhold <stephan.gerhold@linaro.org>
Fixes: 17ee2fb4e856 ("remoteproc: qcom: pas: Vote for active/proxy power domains")
Signed-off-by: Luca Weiss <luca@lucaweiss.eu>
Reviewed-by: Stephan Gerhold <stephan.gerhold@linaro.org>
Link: https://lore.kernel.org/r/20250128-pas-singlepd-v1-2-85d9ae4b0093@lucaweiss.eu
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
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MSM8226 requires the CX power domain, so use the msm8996_adsp_resource
which has cx under proxy_pd_names and is otherwise equivalent.
Suggested-by: Stephan Gerhold <stephan.gerhold@linaro.org>
Fixes: fb4f07cc9399 ("remoteproc: qcom: pas: Add MSM8226 ADSP support")
Signed-off-by: Luca Weiss <luca@lucaweiss.eu>
Reviewed-by: Stephan Gerhold <stephan.gerhold@linaro.org>
Link: https://lore.kernel.org/r/20250128-pas-singlepd-v1-1-85d9ae4b0093@lucaweiss.eu
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
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There is case as below could trigger kernel dump:
Use U-Boot to start remote processor(rproc) with resource table
published to a fixed address by rproc. After Kernel boots up,
stop the rproc, load a new firmware which doesn't have resource table
,and start rproc.
When starting rproc with a firmware not have resource table,
`memcpy(loaded_table, rproc->cached_table, rproc->table_sz)` will
trigger dump, because rproc->cache_table is set to NULL during the last
stop operation, but rproc->table_sz is still valid.
This issue is found on i.MX8MP and i.MX9.
Dump as below:
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
Mem abort info:
ESR = 0x0000000096000004
EC = 0x25: DABT (current EL), IL = 32 bits
SET = 0, FnV = 0
EA = 0, S1PTW = 0
FSC = 0x04: level 0 translation fault
Data abort info:
ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000
CM = 0, WnR = 0, TnD = 0, TagAccess = 0
GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
user pgtable: 4k pages, 48-bit VAs, pgdp=000000010af63000
[0000000000000000] pgd=0000000000000000, p4d=0000000000000000
Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP
Modules linked in:
CPU: 2 UID: 0 PID: 1060 Comm: sh Not tainted 6.14.0-rc7-next-20250317-dirty #38
Hardware name: NXP i.MX8MPlus EVK board (DT)
pstate: a0000005 (NzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __pi_memcpy_generic+0x110/0x22c
lr : rproc_start+0x88/0x1e0
Call trace:
__pi_memcpy_generic+0x110/0x22c (P)
rproc_boot+0x198/0x57c
state_store+0x40/0x104
dev_attr_store+0x18/0x2c
sysfs_kf_write+0x7c/0x94
kernfs_fop_write_iter+0x120/0x1cc
vfs_write+0x240/0x378
ksys_write+0x70/0x108
__arm64_sys_write+0x1c/0x28
invoke_syscall+0x48/0x10c
el0_svc_common.constprop.0+0xc0/0xe0
do_el0_svc+0x1c/0x28
el0_svc+0x30/0xcc
el0t_64_sync_handler+0x10c/0x138
el0t_64_sync+0x198/0x19c
Clear rproc->table_sz to address the issue.
Fixes: 9dc9507f1880 ("remoteproc: Properly deal with the resource table when detaching")
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Link: https://lore.kernel.org/r/20250319100106.3622619-1-peng.fan@oss.nxp.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
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The comment says the qcom_add_sysmon_subdev() returns NULL on error but
it actually returns error pointers.
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/77a6b65b-5f3f-4a21-a837-7a4a7e09b099@stanley.mountain
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
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The bcm_iproc_i2c_init() always returns 0. As a result, there
is no need to check its return value or handle errors.
This patch changes the prototype of bcm_iproc_i2c_init() to
return void and removes the redundant error handling code after
calls to bcm_iproc_i2c_init() in both the bcm_iproc_i2c_probe()
and bcm_iproc_i2c_resume().
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Acked-by: Ray Jui <ray.jui@broadcom.com>
Link: https://lore.kernel.org/r/20250121084818.2719-1-vulab@iscas.ac.cn
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
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With the current settings, the I2C buses are achieving around 370KHz
instead of the expected 400KHz. For 100KHz and 1MHz, the settings are
now more compliant and adhere to the Qualcomm’s internal programming
guide.
Update the I2C frequency table to align with the recommended values
outlined in the I2C hardware programming guide, ensuring proper
communication and performance.
Signed-off-by: Mukesh Kumar Savaliya <quic_msavaliy@quicinc.com>
Reviewed-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Link: https://lore.kernel.org/r/20250122064634.2864432-1-quic_msavaliy@quicinc.com
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
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Convert the usage of an open-coded custom tight poll while loop
with the provided readl_poll_timeout_atomic() macro.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Asmaa Mnebhi <asmaa@nvidia.com>
Link: https://lore.kernel.org/r/20250212165128.2413430-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
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Add the missing register bits to the defines and also switch
those to use the BIT macro which is much more readable than
using hardcoded masks
Co-developed-by: Hector Martin <marcan@marcan.st>
Signed-off-by: Hector Martin <marcan@marcan.st>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20250222-pasemi-fixes-v1-1-d7ea33d50c5e@svenpeter.dev
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Commit 95a8ca229032 ("i2c: spacemit: add support for SpacemiT K1
SoC") introduced a check in the probe function to warn the user
if the DTS has incorrect frequency settings. In such cases, the
driver falls back to default values.
However, the return value of of_property_read_u32() was not
stored, making the check ineffective. Fix this by storing the
return value in 'ret' and evaluating it properly.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202503200928.eBWfwnHG-lkp@intel.com/
Cc: Troy Mitchell <troymitchell988@gmail.com>
Link: https://lore.kernel.org/r/20250320113521.3966762-1-andi.shyti@kernel.org
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
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CONFIG_TRACE_BRANCH_PROFILING inserts a call to ftrace_likely_update()
for each use of likely() or unlikely(). That breaks noinstr rules if
the affected function is annotated as noinstr.
Disable branch profiling for files with noinstr functions. In addition
to some individual files, this also includes the entire arch/x86
subtree, as well as the kernel/entry, drivers/cpuidle, and drivers/idle
directories, all of which are noinstr-heavy.
Due to the nature of how sched binaries are built by combining multiple
.c files into one, branch profiling is disabled more broadly across the
sched code than would otherwise be needed.
This fixes many warnings like the following:
vmlinux.o: warning: objtool: do_syscall_64+0x40: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: __rdgsbase_inactive+0x33: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: handle_bug.isra.0+0x198: call to ftrace_likely_update() leaves .noinstr.text section
...
Reported-by: Ingo Molnar <mingo@kernel.org>
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/fb94fc9303d48a5ed370498f54500cc4c338eb6d.1742586676.git.jpoimboe@kernel.org
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Update the NR_BALLOON_PAGES counter when pages are added to or removed
from the Xen balloon.
Link: https://lkml.kernel.org/r/20250314213757.244258-5-npache@redhat.com
Signed-off-by: Nico Pache <npache@redhat.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Cc: Alexander Atanasov <alexander.atanasov@virtuozzo.com>
Cc: Chengming Zhou <chengming.zhou@linux.dev>
Cc: David Hildenbrand <david@redhat.com>
Cc: Dexuan Cui <decui@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Juegren Gross <jgross@suse.com>
Cc: Kanchana P Sridhar <kanchana.p.sridhar@intel.com>
Cc: K. Y. Srinivasan <kys@microsoft.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Nhat Pham <nphamcs@gmail.com>
Cc: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Wei Liu <wei.liu@kernel.org>
Cc: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Update the NR_BALLOON_PAGES counter when pages are added to or removed
from the Hyper-V balloon.
Link: https://lkml.kernel.org/r/20250314213757.244258-4-npache@redhat.com
Signed-off-by: Nico Pache <npache@redhat.com>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Cc: Alexander Atanasov <alexander.atanasov@virtuozzo.com>
Cc: Chengming Zhou <chengming.zhou@linux.dev>
Cc: David Hildenbrand <david@redhat.com>
Cc: Dexuan Cui <decui@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Juegren Gross <jgross@suse.com>
Cc: Kanchana P Sridhar <kanchana.p.sridhar@intel.com>
Cc: K. Y. Srinivasan <kys@microsoft.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Nhat Pham <nphamcs@gmail.com>
Cc: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Wei Liu <wei.liu@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Prepare the emc2305 driver to use configuration from Device Tree nodes.
Switch to devm_thermal_of_cooling_device_register to simplify the
cleanup procedure, allowing the removal of emc2305_unset_tz and
emc2305_remove, which are no longer needed.
Signed-off-by: Florin Leotescu <florin.leotescu@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20250321143308.4008623-4-florin.leotescu@oss.nxp.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Introduce OF support for Microchip emc2305 pwm fan controller.
Signed-off-by: Florin Leotescu <florin.leotescu@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20250321143308.4008623-3-florin.leotescu@oss.nxp.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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The pds_fwctl driver doesn't know what RPC operations are available
in the firmware, so also doesn't know what scope they might have. The
userland utility supplies the firmware "endpoint" and "operation" id values
and this driver queries the firmware for endpoints and their available
operations. The operation descriptions include the scope information
which the driver uses for scope testing.
Link: https://patch.msgid.link/r/20250320194412.67983-6-shannon.nelson@amd.com
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Brett Creeley <brett.creeley@amd.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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Initial files for adding a new fwctl driver for the AMD/Pensando PDS
devices. This sets up a simple auxiliary_bus driver that registers
with fwctl subsystem. It expects that a pds_core device has set up
the auxiliary_device pds_core.fwctl
Link: https://patch.msgid.link/r/20250320194412.67983-5-shannon.nelson@amd.com
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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hwspin_lock_get_id() has been unused since the original 2011
commit bd9a4c7df256 ("drivers: hwspinlock: add framework")
Remove it and the corresponding docs.
Note that the of_hwspin_lock_get_id() version is still in use,
so leave that alone.
Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Link: https://lore.kernel.org/r/20241215022023.181435-1-linux@treblig.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
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devm_hwspin_lock_request() was added by 2018's
commit 4f1acd758b08 ("hwspinlock: Add devm_xxx() APIs to request/free
hwlock") however, it's never been used, everyone uses the
devm_hwspin_lock_request_specific() call instead.
Remove it.
Similarly, the none-devm variant isn't used.
Remove it, and the referring documentation.
Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Link: https://lore.kernel.org/r/20241027205445.239108-1-linux@treblig.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
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PCIe devices (not CXL) can support DOE as well, so allow DOE to be enabled
even if CXL isn't.
Link: https://lore.kernel.org/r/20250306075211.1855177-4-alistair@alistair23.me
Signed-off-by: Alistair Francis <alistair@alistair23.me>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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