May 2025 - Linux-stable-mirror

[PATCH v6] clk: qcom: dispcc-sm8750: Fix setting rate byte and pixel clocks

by Krzysztof Kozlowski

On SM8750 the setting rate of pixel and byte clocks, while the parent DSI PHY PLL, fails with: disp_cc_mdss_byte0_clk_src: rcg didn't update its configuration. DSI PHY PLL has to be unprepared and its "PLL Power Down" bits in CMN_CTRL_0 asserted. Mark these clocks with CLK_OPS_PARENT_ENABLE to ensure the parent is enabled during rate changes. Cc: <stable(a)vger.kernel.org> Fixes: f1080d8dab0f ("clk: qcom: dispcc-sm8750: Add SM8750 Display clock controller") Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> --- Changes in v6: 1. Add CLK_OPS_PARENT_ENABLE also to pclk1, pclk2 and byte1. 2. Add Fixes tag and cc-stable Previously part of v5 (thus b4 diff might not work nice here): https://lore.kernel.org/r/20250430-b4-sm8750-display-v5-6-8cab30c3e4df@lina… Changes in v5: 1. New patch in above patchset. Cc: Abhinav Kumar <quic_abhinavk(a)quicinc.com> Cc: Dmitry Baryshkov <lumag(a)kernel.org> --- drivers/clk/qcom/dispcc-sm8750.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/clk/qcom/dispcc-sm8750.c b/drivers/clk/qcom/dispcc-sm8750.c index 877b40d50e6f..ca09da111a50 100644 --- a/drivers/clk/qcom/dispcc-sm8750.c +++ b/drivers/clk/qcom/dispcc-sm8750.c @@ -393,7 +393,7 @@ static struct clk_rcg2 disp_cc_mdss_byte0_clk_src = { .name = "disp_cc_mdss_byte0_clk_src", .parent_data = disp_cc_parent_data_1, .num_parents = ARRAY_SIZE(disp_cc_parent_data_1), - .flags = CLK_SET_RATE_PARENT, + .flags = CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE, .ops = &clk_byte2_ops, }, }; @@ -408,7 +408,7 @@ static struct clk_rcg2 disp_cc_mdss_byte1_clk_src = { .name = "disp_cc_mdss_byte1_clk_src", .parent_data = disp_cc_parent_data_1, .num_parents = ARRAY_SIZE(disp_cc_parent_data_1), - .flags = CLK_SET_RATE_PARENT, + .flags = CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE, .ops = &clk_byte2_ops, }, }; @@ -712,7 +712,7 @@ static struct clk_rcg2 disp_cc_mdss_pclk0_clk_src = { .name = "disp_cc_mdss_pclk0_clk_src", .parent_data = disp_cc_parent_data_1, .num_parents = ARRAY_SIZE(disp_cc_parent_data_1), - .flags = CLK_SET_RATE_PARENT, + .flags = CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE, .ops = &clk_pixel_ops, }, }; @@ -727,7 +727,7 @@ static struct clk_rcg2 disp_cc_mdss_pclk1_clk_src = { .name = "disp_cc_mdss_pclk1_clk_src", .parent_data = disp_cc_parent_data_1, .num_parents = ARRAY_SIZE(disp_cc_parent_data_1), - .flags = CLK_SET_RATE_PARENT, + .flags = CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE, .ops = &clk_pixel_ops, }, }; @@ -742,7 +742,7 @@ static struct clk_rcg2 disp_cc_mdss_pclk2_clk_src = { .name = "disp_cc_mdss_pclk2_clk_src", .parent_data = disp_cc_parent_data_1, .num_parents = ARRAY_SIZE(disp_cc_parent_data_1), - .flags = CLK_SET_RATE_PARENT, + .flags = CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE, .ops = &clk_pixel_ops, }, }; -- 2.45.2

6 months, 1 week

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[PATCH] clk: qcom: gcc-ipq8074: fix broken freq table for nss_port6_tx_clk_src

by Christian Marangi

With the conversion done by commit e88f03230dc0 ("clk: qcom: gcc-ipq8074: rework nss_port5/6 clock to multiple conf") a Copy-Paste error was made for the nss_port6_tx_clk_src frequency table. This was caused by the wrong setting of the parent in ftbl_nss_port6_tx_clk_src that was wrongly set to P_UNIPHY1_RX instead of P_UNIPHY2_TX. This cause the UNIPHY2 port to malfunction when it needs to be scaled to higher clock. The malfunction was observed with the example scenario with an Aquantia 10G PHY connected and a speed higher than 1G (example 2.5G) Fix the broken frequency table to restore original functionality. Cc: stable(a)vger.kernel.org Fixes: e88f03230dc0 ("clk: qcom: gcc-ipq8074: rework nss_port5/6 clock to multiple conf") Signed-off-by: Christian Marangi <ansuelsmth(a)gmail.com> --- drivers/clk/qcom/gcc-ipq8074.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/clk/qcom/gcc-ipq8074.c b/drivers/clk/qcom/gcc-ipq8074.c index 7258ba5c0900..1329ea28d703 100644 --- a/drivers/clk/qcom/gcc-ipq8074.c +++ b/drivers/clk/qcom/gcc-ipq8074.c @@ -1895,10 +1895,10 @@ static const struct freq_conf ftbl_nss_port6_tx_clk_src_125[] = { static const struct freq_multi_tbl ftbl_nss_port6_tx_clk_src[] = { FMS(19200000, P_XO, 1, 0, 0), FM(25000000, ftbl_nss_port6_tx_clk_src_25), - FMS(78125000, P_UNIPHY1_RX, 4, 0, 0), + FMS(78125000, P_UNIPHY2_TX, 4, 0, 0), FM(125000000, ftbl_nss_port6_tx_clk_src_125), - FMS(156250000, P_UNIPHY1_RX, 2, 0, 0), - FMS(312500000, P_UNIPHY1_RX, 1, 0, 0), + FMS(156250000, P_UNIPHY2_TX, 2, 0, 0), + FMS(312500000, P_UNIPHY2_TX, 1, 0, 0), { } }; -- 2.48.1

6 months, 1 week

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[PATCH 0/1] disable __counted_by for clang < 19.1.3

by Jan Hendrik Farr

Hi Kees, Bill's PR to disable __counted_by for "whole struct" __bdos cases has now been merged into 19.1.3 [1], so here's the patch to disable __counted_by for clang versions < 19.1.3 in the kernel. Hopefully in the near future __counted_by for whole struct __bdos can be enabled once again in coordination between the kernel, gcc, and clang. There has been recent progress on this in [2] thanks to Tavian. Also see previous discussion on the mailing list [3] Thanks to everyone for moving this issue along. In particular, Bill for his PR to clang/llvm, Kees and Thorsten for reproducers of the two issues, Nathan for Kconfig-ifying this patch, and Miguel for reviewing. Info for the stable team: This patch should be backported to kernels >= 6.6 to make sure that those build correctly with the effected clang versions. This patch cherry-picks cleanly onto linux-6.11.y. For linux-6.6.y three prerequiste commits are neded: 16c31dd7fdf6: Compiler Attributes: counted_by: bump min gcc version 2993eb7a8d34: Compiler Attributes: counted_by: fixup clang URL 231dc3f0c936: lkdtm/bugs: Improve warning message for compilers without counted_by support There are still two merge conflicts even with those prerequistes. Here's the correct resolution: 1. include/linux/compiler_types.h: use the incoming change until before (but not including) the "Apply __counted_by() when the Endianness matches to increase test coverage." comment 2. lib/overflow_kunit.c: HEAD is correct [1] https://github.com/llvm/llvm-project/pull/112786 [2] https://github.com/llvm/llvm-project/pull/112636 [3] https://lore.kernel.org/lkml/3E304FB2-799D-478F-889A-CDFC1A52DCD8@toblux.co… Best Regards Jan Jan Hendrik Farr (1): Compiler Attributes: disable __counted_by for clang < 19.1.3 drivers/misc/lkdtm/bugs.c | 2 +- include/linux/compiler_attributes.h | 13 ------------- include/linux/compiler_types.h | 19 +++++++++++++++++++ init/Kconfig | 9 +++++++++ lib/overflow_kunit.c | 2 +- 5 files changed, 30 insertions(+), 15 deletions(-) -- 2.47.0

6 months, 1 week

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[PATCH v3 2/3] udmabuf: use sgtable-based scatterlist wrappers

by Marek Szyprowski

Use common wrappers operating directly on the struct sg_table objects to fix incorrect use of scatterlists sync calls. dma_sync_sg_for_*() functions have to be called with the number of elements originally passed to dma_map_sg_*() function, not the one returned in sgtable's nents. Fixes: 1ffe09590121 ("udmabuf: fix dma-buf cpu access") CC: stable(a)vger.kernel.org Signed-off-by: Marek Szyprowski <m.szyprowski(a)samsung.com> Acked-by: Vivek Kasireddy <vivek.kasireddy(a)intel.com> --- drivers/dma-buf/udmabuf.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/dma-buf/udmabuf.c b/drivers/dma-buf/udmabuf.c index 7eee3eb47a8e..c9d0c68d2fcb 100644 --- a/drivers/dma-buf/udmabuf.c +++ b/drivers/dma-buf/udmabuf.c @@ -264,8 +264,7 @@ static int begin_cpu_udmabuf(struct dma_buf *buf, ubuf->sg = NULL; } } else { - dma_sync_sg_for_cpu(dev, ubuf->sg->sgl, ubuf->sg->nents, - direction); + dma_sync_sgtable_for_cpu(dev, ubuf->sg, direction); } return ret; @@ -280,7 +279,7 @@ static int end_cpu_udmabuf(struct dma_buf *buf, if (!ubuf->sg) return -EINVAL; - dma_sync_sg_for_device(dev, ubuf->sg->sgl, ubuf->sg->nents, direction); + dma_sync_sgtable_for_device(dev, ubuf->sg, direction); return 0; } -- 2.34.1

6 months, 1 week

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[PATCH 0/3] x86: Fix some bugs related to ITS mitigation

by Juergen Gross

Running as a Xen PV guest uncovered some bugs when ITS mitigation is active. Juergen Gross (3): x86/execmem: don't use PAGE_KERNEL protection for code pages x86/mm/pat: don't collapse pages without PSE set x86/alternative: make kernel ITS thunks read-only arch/x86/kernel/alternative.c | 16 ++++++++++++++++ arch/x86/mm/init.c | 2 +- arch/x86/mm/pat/set_memory.c | 3 +++ 3 files changed, 20 insertions(+), 1 deletion(-) -- 2.43.0

6 months, 1 week

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[PATCH v1 0/4] Fix uprobe pte be overwritten when expanding vma

by Pu Lehui

From: Pu Lehui <pulehui(a)huawei.com> patch 1: the mainly fix for uprobe pte be overwritten issue. patch 2: WARN_ON_ONCE for new_pte not NULL during move_ptes. patch 3: extract some utils function for upcomming selftest. patch 4: selftest related to this series. v1: - limit skip uprobe_mmap to copy_vma flow. - add related selftest. - correct Fixes tag. RFC v2: https://lore.kernel.org/all/20250527132351.2050820-1-pulehui@huaweicloud.co… - skip uprobe_mmap on expanded vma. - add skip_vma_uprobe field to struct vma_prepare and vma_merge_struct. (Lorenzo) - add WARN_ON_ONCE when new_pte is not NULL. (Oleg) - Corrected some of the comments. RFC v1: https://lore.kernel.org/all/20250521092503.3116340-1-pulehui@huaweicloud.co… Pu Lehui (4): mm: Fix uprobe pte be overwritten when expanding vma mm: Expose abnormal new_pte during move_ptes selftests/mm: Extract read_sysfs and write_sysfs into vm_util selftests/mm: Add test about uprobe pte be orphan during vma merge mm/mremap.c | 2 ++ mm/vma.c | 20 ++++++++++-- mm/vma.h | 7 +++++ tools/testing/selftests/mm/ksm_tests.c | 32 ++------------------ tools/testing/selftests/mm/merge.c | 42 ++++++++++++++++++++++++++ tools/testing/selftests/mm/thuge-gen.c | 6 ++-- tools/testing/selftests/mm/vm_util.c | 38 +++++++++++++++++++++++ tools/testing/selftests/mm/vm_util.h | 2 ++ 8 files changed, 113 insertions(+), 36 deletions(-) -- 2.34.1

6 months, 1 week

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[PATCH v2] mmc: core: sd: Apply BROKEN_SD_DISCARD quirk earlier

by Avri Altman

Move the BROKEN_SD_DISCARD quirk for certain SanDisk SD cards from the `mmc_blk_fixups[]` to `mmc_sd_fixups[]`. This ensures the quirk is applied earlier in the device initialization process, aligning with the reasoning in [1]. Applying the quirk sooner prevents the kernel from incorrectly enabling discard support on affected cards during initial setup. [1] https://lore.kernel.org/all/20240820230631.GA436523@sony.com Fixes: 07d2872bf4c8 ("mmc: core: Add SD card quirk for broken discard") Signed-off-by: Avri Altman <avri.altman(a)sandisk.com> Cc: stable(a)vger.kernel.org --- Changes in v2: - rebase on latest next --- drivers/mmc/core/quirks.h | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/mmc/core/quirks.h b/drivers/mmc/core/quirks.h index 7f893bafaa60..c417ed34c057 100644 --- a/drivers/mmc/core/quirks.h +++ b/drivers/mmc/core/quirks.h @@ -44,6 +44,12 @@ static const struct mmc_fixup __maybe_unused mmc_sd_fixups[] = { 0, -1ull, SDIO_ANY_ID, SDIO_ANY_ID, add_quirk_sd, MMC_QUIRK_NO_UHS_DDR50_TUNING, EXT_CSD_REV_ANY), + /* + * Some SD cards reports discard support while they don't + */ + MMC_FIXUP(CID_NAME_ANY, CID_MANFID_SANDISK_SD, 0x5344, add_quirk_sd, + MMC_QUIRK_BROKEN_SD_DISCARD), + END_FIXUP }; @@ -147,12 +153,6 @@ static const struct mmc_fixup __maybe_unused mmc_blk_fixups[] = { MMC_FIXUP("M62704", CID_MANFID_KINGSTON, 0x0100, add_quirk_mmc, MMC_QUIRK_TRIM_BROKEN), - /* - * Some SD cards reports discard support while they don't - */ - MMC_FIXUP(CID_NAME_ANY, CID_MANFID_SANDISK_SD, 0x5344, add_quirk_sd, - MMC_QUIRK_BROKEN_SD_DISCARD), - END_FIXUP }; -- 2.25.1

6 months, 1 week

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[PATCH 5.15 v3 00/16] ITS mitigation

by Pawan Gupta

v3: - Added patches: x86/its: Fix build errors when CONFIG_MODULES=n x86/its: FineIBT-paranoid vs ITS v2: - Added missing patch to 6.1 backport. This is a backport of mitigation for Indirect Target Selection (ITS). ITS is a bug in some Intel CPUs that affects indirect branches including RETs in the first half of a cacheline. Mitigation is to relocate the affected branches to an ITS-safe thunk. Below additional upstream commits are required to cover some of the special cases like indirects in asm and returns in static calls: cfceff8526a4 ("x86/speculation: Simplify and make CALL_NOSPEC consistent") 052040e34c08 ("x86/speculation: Add a conditional CS prefix to CALL_NOSPEC") c8c81458863a ("x86/speculation: Remove the extra #ifdef around CALL_NOSPEC") d2408e043e72 ("x86/alternative: Optimize returns patching") 4ba89dd6ddec ("x86/alternatives: Remove faulty optimization") [1] https://github.com/torvalds/linux/commit/6f5bf947bab06f37ff931c359fd5770c4d… --- Borislav Petkov (AMD) (1): x86/alternative: Optimize returns patching Eric Biggers (1): x86/its: Fix build errors when CONFIG_MODULES=n Josh Poimboeuf (1): x86/alternatives: Remove faulty optimization Pawan Gupta (10): x86/speculation: Simplify and make CALL_NOSPEC consistent x86/speculation: Add a conditional CS prefix to CALL_NOSPEC x86/speculation: Remove the extra #ifdef around CALL_NOSPEC Documentation: x86/bugs/its: Add ITS documentation x86/its: Enumerate Indirect Target Selection (ITS) bug x86/its: Add support for ITS-safe indirect thunk x86/its: Add support for ITS-safe return thunk x86/its: Enable Indirect Target Selection mitigation x86/its: Add "vmexit" option to skip mitigation on some CPUs x86/its: Align RETs in BHB clear sequence to avoid thunking Peter Zijlstra (3): x86,nospec: Simplify {JMP,CALL}_NOSPEC x86/its: Use dynamic thunks for indirect branches x86/its: FineIBT-paranoid vs ITS Documentation/ABI/testing/sysfs-devices-system-cpu | 1 + Documentation/admin-guide/hw-vuln/index.rst | 1 + .../hw-vuln/indirect-target-selection.rst | 156 +++++++++++++ Documentation/admin-guide/kernel-parameters.txt | 15 ++ arch/x86/Kconfig | 11 + arch/x86/entry/entry_64.S | 20 +- arch/x86/include/asm/alternative.h | 32 +++ arch/x86/include/asm/cpufeatures.h | 3 + arch/x86/include/asm/msr-index.h | 8 + arch/x86/include/asm/nospec-branch.h | 57 +++-- arch/x86/kernel/alternative.c | 243 ++++++++++++++++++++- arch/x86/kernel/cpu/bugs.c | 139 +++++++++++- arch/x86/kernel/cpu/common.c | 63 +++++- arch/x86/kernel/ftrace.c | 2 +- arch/x86/kernel/module.c | 7 + arch/x86/kernel/static_call.c | 2 +- arch/x86/kernel/vmlinux.lds.S | 10 + arch/x86/kvm/x86.c | 4 +- arch/x86/lib/retpoline.S | 39 ++++ arch/x86/net/bpf_jit_comp.c | 8 +- drivers/base/cpu.c | 8 + include/linux/cpu.h | 2 + include/linux/module.h | 5 + 23 files changed, 793 insertions(+), 43 deletions(-) --- change-id: 20250512-its-5-15-0e0385221e32

6 months, 1 week

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[PATCH v2] accel/ivpu: Fix warning in ivpu_gem_bo_free()

by Jacek Lawrynowicz

Don't WARN if imported buffers are in use in ivpu_gem_bo_free() as they can be indeed used in the original context/driver. Fixes: 647371a6609d ("accel/ivpu: Add GEM buffer object management") Cc: stable(a)vger.kernel.org # v6.3 Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz(a)linux.intel.com> --- v2: Use drm_gem_is_imported() to check if the buffer is imported. --- drivers/accel/ivpu/ivpu_gem.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/accel/ivpu/ivpu_gem.c b/drivers/accel/ivpu/ivpu_gem.c index c193a80241f5f..5ff0bac739fc9 100644 --- a/drivers/accel/ivpu/ivpu_gem.c +++ b/drivers/accel/ivpu/ivpu_gem.c @@ -278,7 +278,8 @@ static void ivpu_gem_bo_free(struct drm_gem_object *obj) list_del(&bo->bo_list_node); mutex_unlock(&vdev->bo_list_lock); - drm_WARN_ON(&vdev->drm, !dma_resv_test_signaled(obj->resv, DMA_RESV_USAGE_READ)); + drm_WARN_ON(&vdev->drm, !drm_gem_is_imported(&bo->base.base) && + !dma_resv_test_signaled(obj->resv, DMA_RESV_USAGE_READ)); drm_WARN_ON(&vdev->drm, ivpu_bo_size(bo) == 0); drm_WARN_ON(&vdev->drm, bo->base.vaddr); -- 2.45.1

6 months, 2 weeks

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[PATCH] accel/ivpu: Trigger device recovery on engine reset/resume failure

by Jacek Lawrynowicz

From: Karol Wachowski <karol.wachowski(a)intel.com> Trigger full device recovery when the driver fails to restore device state via engine reset and resume operations. This is necessary because, even if submissions from a faulty context are blocked, the NPU may still process previously submitted faulty jobs if the engine reset fails to abort them. Such jobs can continue to generate faults and occupy device resources. When engine reset is ineffective, the only way to recover is to perform a full device recovery. Fixes: dad945c27a42 ("accel/ivpu: Add handling of VPU_JSM_STATUS_MVNCI_CONTEXT_VIOLATION_HW") Cc: <stable(a)vger.kernel.org> # v6.15+ Signed-off-by: Karol Wachowski <karol.wachowski(a)intel.com> Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz(a)linux.intel.com> --- drivers/accel/ivpu/ivpu_job.c | 6 ++++-- drivers/accel/ivpu/ivpu_jsm_msg.c | 9 +++++++-- 2 files changed, 11 insertions(+), 4 deletions(-) diff --git a/drivers/accel/ivpu/ivpu_job.c b/drivers/accel/ivpu/ivpu_job.c index 1c8e283ad9854..fae8351aa3309 100644 --- a/drivers/accel/ivpu/ivpu_job.c +++ b/drivers/accel/ivpu/ivpu_job.c @@ -986,7 +986,8 @@ void ivpu_context_abort_work_fn(struct work_struct *work) return; if (vdev->fw->sched_mode == VPU_SCHEDULING_MODE_HW) - ivpu_jsm_reset_engine(vdev, 0); + if (ivpu_jsm_reset_engine(vdev, 0)) + return; mutex_lock(&vdev->context_list_lock); xa_for_each(&vdev->context_xa, ctx_id, file_priv) { @@ -1009,7 +1010,8 @@ void ivpu_context_abort_work_fn(struct work_struct *work) if (vdev->fw->sched_mode != VPU_SCHEDULING_MODE_HW) goto runtime_put; - ivpu_jsm_hws_resume_engine(vdev, 0); + if (ivpu_jsm_hws_resume_engine(vdev, 0)) + return; /* * In hardware scheduling mode NPU already has stopped processing jobs * and won't send us any further notifications, thus we have to free job related resources diff --git a/drivers/accel/ivpu/ivpu_jsm_msg.c b/drivers/accel/ivpu/ivpu_jsm_msg.c index 219ab8afefabd..0256b2dfefc10 100644 --- a/drivers/accel/ivpu/ivpu_jsm_msg.c +++ b/drivers/accel/ivpu/ivpu_jsm_msg.c @@ -7,6 +7,7 @@ #include "ivpu_hw.h" #include "ivpu_ipc.h" #include "ivpu_jsm_msg.h" +#include "ivpu_pm.h" #include "vpu_jsm_api.h" const char *ivpu_jsm_msg_type_to_str(enum vpu_ipc_msg_type type) @@ -163,8 +164,10 @@ int ivpu_jsm_reset_engine(struct ivpu_device *vdev, u32 engine) ret = ivpu_ipc_send_receive(vdev, &req, VPU_JSM_MSG_ENGINE_RESET_DONE, &resp, VPU_IPC_CHAN_ASYNC_CMD, vdev->timeout.jsm); - if (ret) + if (ret) { ivpu_err_ratelimited(vdev, "Failed to reset engine %d: %d\n", engine, ret); + ivpu_pm_trigger_recovery(vdev, "Engine reset failed"); + } return ret; } @@ -354,8 +357,10 @@ int ivpu_jsm_hws_resume_engine(struct ivpu_device *vdev, u32 engine) ret = ivpu_ipc_send_receive(vdev, &req, VPU_JSM_MSG_HWS_RESUME_ENGINE_DONE, &resp, VPU_IPC_CHAN_ASYNC_CMD, vdev->timeout.jsm); - if (ret) + if (ret) { ivpu_err_ratelimited(vdev, "Failed to resume engine %d: %d\n", engine, ret); + ivpu_pm_trigger_recovery(vdev, "Engine resume failed"); + } return ret; } -- 2.45.1

6 months, 2 weeks

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