Development tree for the kernel CSPRNG https://git.zx2c4.com/linux-rng/atom/drivers/hwtracing?h=master 2025-10-27T16:16:36Z 2025-10-27T16:16:36Z Marc Zyngier maz@kernel.org 2025-10-20T12:29:37Z urn:sha1:4cdf4813f528cdadfc3778fed6b7783cfe1eb75a Let the TRBE driver request interrupts with an affinity mask matching the TRBE implementation affinity. Signed-off-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Will Deacon <will@kernel.org> Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://patch.msgid.link/20251020122944.3074811-21-maz@kernel.org 2025-10-27T16:16:33Z Marc Zyngier maz@kernel.org 2025-10-20T12:29:24Z urn:sha1:541454dd204b66c9f03761e00a28ad9702b24829 Now that the relevant interrupt controllers are equipped with a callback returning the affinity of per-CPU interrupts, switch the TRBE driver over to this new method. Signed-off-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Will Deacon <will@kernel.org> Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://patch.msgid.link/20251020122944.3074811-8-maz@kernel.org 2025-10-04T23:26:32Z Linus Torvalds torvalds@linux-foundation.org 2025-10-04T23:26:32Z urn:sha1:6093a688a07da07808f0122f9aa2a3eed250d853 Pull Char/Misc/IIO/Binder updates from Greg KH: "Here is the big set of char/misc/iio and other driver subsystem changes for 6.18-rc1. Loads of different stuff in here, it was a busy development cycle in lots of different subsystems, with over 27k new lines added to the tree. Included in here are: - IIO updates including new drivers, reworking of existing apis, and other goodness in the sensor subsystems - MEI driver updates and additions - NVMEM driver updates - slimbus removal for an unused driver and some other minor updates - coresight driver updates and additions - MHI driver updates - comedi driver updates and fixes - extcon driver updates - interconnect driver additions - eeprom driver updates and fixes - minor UIO driver updates - tiny W1 driver updates But the majority of new code is in the rust bindings and additions, which includes: - misc driver rust binding updates for read/write support, we can now write "normal" misc drivers in rust fully, and the sample driver shows how this can be done. - Initial framework for USB driver rust bindings, which are disabled for now in the build, due to limited support, but coming in through this tree due to dependencies on other rust binding changes that were in here. I'll be enabling these back on in the build in the usb.git tree after -rc1 is out so that developers can continue to work on these in linux-next over the next development cycle. - Android Binder driver implemented in Rust. This is the big one, and was driving a huge majority of the rust binding work over the past years. Right now there are two binder drivers in the kernel, selected only at build time as to which one to use as binder wants to be included in the system at boot time. The binder C maintainers all agreed on this, as eventually, they want the C code to be removed from the tree, but it will take a few releases to get there while both are maintained to ensure that the rust implementation is fully stable and compliant with the existing userspace apis. All of these have been in linux-next for a while" * tag 'char-misc-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (320 commits) rust: usb: keep usb::Device private for now rust: usb: don't retain device context for the interface parent USB: disable rust bindings from the build for now samples: rust: add a USB driver sample rust: usb: add basic USB abstractions coresight: Add label sysfs node support dt-bindings: arm: Add label in the coresight components coresight: tnoc: add new AMBA ID to support Trace Noc V2 coresight: Fix incorrect handling for return value of devm_kzalloc coresight: tpda: fix the logic to setup the element size coresight: trbe: Return NULL pointer for allocation failures coresight: Refactor runtime PM coresight: Make clock sequence consistent coresight: Refactor driver data allocation coresight: Consolidate clock enabling coresight: Avoid enable programming clock duplicately coresight: Appropriately disable trace bus clocks coresight: Appropriately disable programming clocks coresight: etm4x: Support atclk coresight: catu: Support atclk ... 2025-09-23T13:14:13Z Mao Jinlong quic_jinlmao@quicinc.com 2025-08-16T07:25:29Z urn:sha1:01f96b812526a2c8dcd5c0e510dda37e09ec8bcd For some coresight components like CTI and TPDM, there could be numerous of them. From the node name, we can only get the type and register address of the component. We can't identify the HW or the system the component belongs to. Add label sysfs node support for showing the intuitive name of the device. Signed-off-by: Mao Jinlong <quic_jinlmao@quicinc.com> Reviewed-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20250816072529.3716968-3-quic_jinlmao@quicinc.com 2025-09-23T13:14:13Z Yuanfang Zhang yuanfang.zhang@oss.qualcomm.com 2025-08-14T09:00:13Z urn:sha1:28a272d8eb9fb8a1fa3ef27f665c04d47d74e037 Add the new AMBA ID 0x001f0c00 to support Trace Noc V2 instances. Signed-off-by: Yuanfang Zhang <yuanfang.zhang@oss.qualcomm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20250814-tnoc_v2-v1-1-3285e37280c9@oss.qualcomm.com 2025-09-23T13:14:13Z Lin Yujun linyujun809@h-partners.com 2025-09-08T12:20:22Z urn:sha1:70714eb7243eaf333d23501d4c7bdd9daf011c01 The return value of devm_kzalloc could be an null pointer, use "!desc.pdata" to fix incorrect handling return value of devm_kzalloc. Fixes: 4277f035d227 ("coresight: trbe: Add a representative coresight_platform_data for TRBE") Signed-off-by: Lin Yujun <linyujun809@h-partners.com> Reviewed-by: James Clark <james.clark@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20250908122022.1315399-1-linyujun809@h-partners.com 2025-09-23T13:14:13Z Jie Gan jie.gan@oss.qualcomm.com 2025-09-05T23:53:04Z urn:sha1:43e0a92c04de7c822f6104abc73caa4a857b4a02 Some TPDM devices support both CMB and DSB datasets, requiring the system to enable the port with both corresponding element sizes. Currently, the logic treats tpdm_read_element_size as successful if the CMB element size is retrieved correctly, regardless of whether the DSB element size is obtained. This behavior causes issues when parsing data from TPDM devices that depend on both element sizes. To address this, the function should explicitly fail if the DSB element size cannot be read correctly. Fixes: e6d7f5252f73 ("coresight-tpda: Add support to configure CMB element") Reviewed-by: James Clark <james.clark@linaro.org> Signed-off-by: Jie Gan <jie.gan@oss.qualcomm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20250906-fix_element_size_issue-v2-1-dbb0ac2541a9@oss.qualcomm.com 2025-09-23T13:14:13Z Leo Yan leo.yan@arm.com 2025-09-04T14:13:52Z urn:sha1:8a55c161f7f9c1aa1c70611b39830d51c83ef36d When the TRBE driver fails to allocate a buffer, it currently returns the error code "-ENOMEM". However, the caller etm_setup_aux() only checks for a NULL pointer, so it misses the error. As a result, the driver continues and eventually causes a kernel panic. Fix this by returning a NULL pointer from arm_trbe_alloc_buffer() on allocation failures. This allows that the callers can properly handle the failure. Fixes: 3fbf7f011f24 ("coresight: sink: Add TRBE driver") Reported-by: Tamas Zsoldos <tamas.zsoldos@arm.com> Signed-off-by: Leo Yan <leo.yan@arm.com> Reviewed-by: James Clark <james.clark@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20250904-cs_etm_auxsetup_fix_error_handling-v2-1-a502d0bafb95@arm.com 2025-09-23T13:14:13Z Leo Yan leo.yan@arm.com 2025-07-31T12:23:46Z urn:sha1:dc783892cca69e721f81d54293dac6286134abfe The validation for driver data pointers and clock pointers are redundant in the runtime PM callbacks. After a driver's probing, its driver data and clocks have been initialized successfully, this ensures it is safe to access driver data and clocks in the runtime PM callbacks. A corner case is a clock pointer is NULL, in this case, the clock core layer can handle it properly. So remove these redundant checking. In runtime resume, respect values returned from clock function and add error handling. Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com> Reviewed-by: Yeoreum Yun <yeoreum.yun@arm.com> Tested-by: James Clark <james.clark@linaro.org> Signed-off-by: Leo Yan <leo.yan@arm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20250731-arm_cs_fix_clock_v4-v6-10-1dfe10bb3f6f@arm.com 2025-09-23T13:14:13Z Leo Yan leo.yan@arm.com 2025-07-31T12:23:45Z urn:sha1:7b20a4fac7c82c0aed6beb22a8523df28361b1ad Since atclk is enabled after pclk during the probe phase, this commit maintains the same sequence for the runtime resume flow. Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com> Reviewed-by: Yeoreum Yun <yeoreum.yun@arm.com> Tested-by: James Clark <james.clark@linaro.org> Signed-off-by: Leo Yan <leo.yan@arm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20250731-arm_cs_fix_clock_v4-v6-9-1dfe10bb3f6f@arm.com