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[PATCH v2 0/3] SDM630/660: Add missing MDSS reset

by Alexey Minnekhanov

Since kernel 6.17 display stack needs to reset the hardware properly to ensure that we don't run into issues with the hardware configured by the bootloader. MDSS reset is necessary to have working display when the bootloader has already initialized it for the boot splash screen. Signed-off-by: Alexey Minnekhanov <alexeymin(a)postmarketos.org> --- Changes in v2: - Added "Fixes" tag, pointing to commit which is the root cause for exposing this "bug", which is only present since 6.17 - Extended commit messages - Prepared series using correct user.email git setting - Link to v1: https://lore.kernel.org/r/20251031-sdm660-mdss-reset-v1-0-14cb4e6836f2@post… --- Alexey Minnekhanov (3): dt-bindings: clock: mmcc-sdm660: Add missing MDSS reset clk: qcom: mmcc-sdm660: Add missing MDSS reset arm64: dts: qcom: sdm630: Add missing MDSS reset arch/arm64/boot/dts/qcom/sdm630.dtsi | 1 + drivers/clk/qcom/mmcc-sdm660.c | 1 + include/dt-bindings/clock/qcom,mmcc-sdm660.h | 1 + 3 files changed, 3 insertions(+) --- base-commit: 1cc41c88ef00de0f3216c5f4b9cfab47de1c49d3 change-id: 20251031-sdm660-mdss-reset-015a46a238b5 Best regards, -- Alexey Minnekhanov <alexeymin(a)postmarketos.org>

3 days, 5 hours

FAILED: patch "[PATCH] ASoC: stm32: sai: fix clk prepare imbalance on probe failure" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.1-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y git checkout FETCH_HEAD git cherry-pick -x 312ec2f0d9d1a5656f76d770bbf1d967e9289aa7 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2026010531-parole-sharpie-8fc0@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 312ec2f0d9d1a5656f76d770bbf1d967e9289aa7 Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan(a)kernel.org> Date: Mon, 24 Nov 2025 11:49:06 +0100 Subject: [PATCH] ASoC: stm32: sai: fix clk prepare imbalance on probe failure Make sure to unprepare the parent clock also on probe failures (e.g. probe deferral). Fixes: a14bf98c045b ("ASoC: stm32: sai: fix possible circular locking") Cc: stable(a)vger.kernel.org # 5.5 Cc: Olivier Moysan <olivier.moysan(a)st.com> Signed-off-by: Johan Hovold <johan(a)kernel.org> Reviewed-by: olivier moysan <olivier.moysan(a)foss.st.com> Link: https://patch.msgid.link/20251124104908.15754-3-johan@kernel.org Signed-off-by: Mark Brown <broonie(a)kernel.org> diff --git a/sound/soc/stm/stm32_sai_sub.c b/sound/soc/stm/stm32_sai_sub.c index 0ae1eae2a59e..7a005b4ad304 100644 --- a/sound/soc/stm/stm32_sai_sub.c +++ b/sound/soc/stm/stm32_sai_sub.c @@ -1634,14 +1634,21 @@ static int stm32_sai_sub_parse_of(struct platform_device *pdev, if (of_property_present(np, "#clock-cells")) { ret = stm32_sai_add_mclk_provider(sai); if (ret < 0) - return ret; + goto err_unprepare_pclk; } else { sai->sai_mclk = devm_clk_get_optional(&pdev->dev, "MCLK"); - if (IS_ERR(sai->sai_mclk)) - return PTR_ERR(sai->sai_mclk); + if (IS_ERR(sai->sai_mclk)) { + ret = PTR_ERR(sai->sai_mclk); + goto err_unprepare_pclk; + } } return 0; + +err_unprepare_pclk: + clk_unprepare(sai->pdata->pclk); + + return ret; } static int stm32_sai_sub_probe(struct platform_device *pdev) @@ -1688,26 +1695,33 @@ static int stm32_sai_sub_probe(struct platform_device *pdev) IRQF_SHARED, dev_name(&pdev->dev), sai); if (ret) { dev_err(&pdev->dev, "IRQ request returned %d\n", ret); - return ret; + goto err_unprepare_pclk; } if (STM_SAI_PROTOCOL_IS_SPDIF(sai)) conf = &stm32_sai_pcm_config_spdif; ret = snd_dmaengine_pcm_register(&pdev->dev, conf, 0); - if (ret) - return dev_err_probe(&pdev->dev, ret, "Could not register pcm dma\n"); + if (ret) { + ret = dev_err_probe(&pdev->dev, ret, "Could not register pcm dma\n"); + goto err_unprepare_pclk; + } ret = snd_soc_register_component(&pdev->dev, &stm32_component, &sai->cpu_dai_drv, 1); if (ret) { snd_dmaengine_pcm_unregister(&pdev->dev); - return ret; + goto err_unprepare_pclk; } pm_runtime_enable(&pdev->dev); return 0; + +err_unprepare_pclk: + clk_unprepare(sai->pdata->pclk); + + return ret; } static void stm32_sai_sub_remove(struct platform_device *pdev)

3 days, 5 hours

FAILED: patch "[PATCH] erofs: fix unexpected EIO under memory pressure" failed to apply to 6.18-stable tree

by gregkh＠linuxfoundation.org

3 days, 5 hours

[PATCH] soc: ti: pruss: fix double free in pruss_clk_mux_setup()

by Wentao Liang

In the pruss_clk_mux_setup(), the devm_add_action_or_reset() indirectly calls pruss_of_free_clk_provider(), which calls of_node_put(clk_mux_np) on the error path. However, after the devm_add_action_or_reset() returns, the of_node_put(clk_mux_np) is called again, causing a double free. Fix by using a separate label to avoid the duplicate of_node_put(). Fixes: ba59c9b43c86 ("soc: ti: pruss: support CORECLK_MUX and IEPCLK_MUX") Cc: stable(a)vger.kernel.org Signed-off-by: Wentao Liang <vulab(a)iscas.ac.cn> --- drivers/soc/ti/pruss.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/soc/ti/pruss.c b/drivers/soc/ti/pruss.c index d7634bf5413a..c16d96bebe3f 100644 --- a/drivers/soc/ti/pruss.c +++ b/drivers/soc/ti/pruss.c @@ -368,13 +368,14 @@ static int pruss_clk_mux_setup(struct pruss *pruss, struct clk *clk_mux, clk_mux_np); if (ret) { dev_err(dev, "failed to add clkmux free action %d", ret); - goto put_clk_mux_np; + goto ret_error; } return 0; put_clk_mux_np: of_node_put(clk_mux_np); +ret_error: return ret; } -- 2.34.1

3 days, 6 hours

FAILED: patch "[PATCH] drm/amd: Fix unbind/rebind for VCN 4.0.5" failed to apply to 6.12-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.12-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.12.y git checkout FETCH_HEAD git cherry-pick -x 93a01629c8bfd30906c76921ec986802d76920c6 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2026010512-maturely-filling-6860@gregkh' --subject-prefix 'PATCH 6.12.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 93a01629c8bfd30906c76921ec986802d76920c6 Mon Sep 17 00:00:00 2001 From: "Mario Limonciello (AMD)" <superm1(a)kernel.org> Date: Mon, 8 Dec 2025 22:46:46 -0600 Subject: [PATCH] drm/amd: Fix unbind/rebind for VCN 4.0.5 Unbinding amdgpu has no problems, but binding it again leads to an error of sysfs file already existing. This is because it wasn't actually cleaned up on unbind. Add the missing cleanup step. Fixes: 547aad32edac ("drm/amdgpu: add VCN4 ip block support") Signed-off-by: Mario Limonciello (AMD) <superm1(a)kernel.org> Reviewed-by: Alex Deucher <alexander.deucher(a)amd.com> Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> (cherry picked from commit d717e62e9b6ccff0e3cec78a58dfbd00858448b3) Cc: stable(a)vger.kernel.org diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v4_0_5.c b/drivers/gpu/drm/amd/amdgpu/vcn_v4_0_5.c index b107ee80e472..1f6a22983c0d 100644 --- a/drivers/gpu/drm/amd/amdgpu/vcn_v4_0_5.c +++ b/drivers/gpu/drm/amd/amdgpu/vcn_v4_0_5.c @@ -265,6 +265,8 @@ static int vcn_v4_0_5_sw_fini(struct amdgpu_ip_block *ip_block) if (amdgpu_sriov_vf(adev)) amdgpu_virt_free_mm_table(adev); + amdgpu_vcn_sysfs_reset_mask_fini(adev); + for (i = 0; i < adev->vcn.num_vcn_inst; i++) { r = amdgpu_vcn_suspend(adev, i); if (r)

3 days, 6 hours

FAILED: patch "[PATCH] drm/msm: Fix a7xx per pipe register programming" failed to apply to 6.18-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.18-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.18.y git checkout FETCH_HEAD git cherry-pick -x d2b6e710d2706c8915fe5e2f961c3365976d2ae1 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2026010536-emoticon-pessimist-46ea@gregkh' --subject-prefix 'PATCH 6.18.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From d2b6e710d2706c8915fe5e2f961c3365976d2ae1 Mon Sep 17 00:00:00 2001 From: Anna Maniscalco <anna.maniscalco2000(a)gmail.com> Date: Mon, 1 Dec 2025 19:14:36 +0100 Subject: [PATCH] drm/msm: Fix a7xx per pipe register programming GEN7_GRAS_NC_MODE_CNTL was only programmed for BR and not for BV pipe but it needs to be programmed for both. Program both pipes in hw_init and introducea separate reglist for it in order to add this register to the dynamic reglist which supports restoring registers per pipe. Fixes: 91389b4e3263 ("drm/msm/a6xx: Add a pwrup_list field to a6xx_info") Cc: stable(a)vger.kernel.org Reviewed-by: Akhil P Oommen <akhilpo(a)oss.qualcomm.com> Signed-off-by: Anna Maniscalco <anna.maniscalco2000(a)gmail.com> Patchwork: https://patchwork.freedesktop.org/patch/691553/ Message-ID: <20251201-gras_nc_mode_fix-v3-1-92a8a10d91d0(a)gmail.com> Signed-off-by: Rob Clark <robin.clark(a)oss.qualcomm.com> diff --git a/drivers/gpu/drm/msm/adreno/a6xx_catalog.c b/drivers/gpu/drm/msm/adreno/a6xx_catalog.c index b731491dc522..ac9a95aab2fb 100644 --- a/drivers/gpu/drm/msm/adreno/a6xx_catalog.c +++ b/drivers/gpu/drm/msm/adreno/a6xx_catalog.c @@ -1376,7 +1376,6 @@ static const uint32_t a7xx_pwrup_reglist_regs[] = { REG_A6XX_UCHE_MODE_CNTL, REG_A6XX_RB_NC_MODE_CNTL, REG_A6XX_RB_CMP_DBG_ECO_CNTL, - REG_A7XX_GRAS_NC_MODE_CNTL, REG_A6XX_RB_CONTEXT_SWITCH_GMEM_SAVE_RESTORE_ENABLE, REG_A6XX_UCHE_GBIF_GX_CONFIG, REG_A6XX_UCHE_CLIENT_PF, @@ -1449,6 +1448,12 @@ static const u32 a750_ifpc_reglist_regs[] = { DECLARE_ADRENO_REGLIST_LIST(a750_ifpc_reglist); +static const struct adreno_reglist_pipe a7xx_dyn_pwrup_reglist_regs[] = { + { REG_A7XX_GRAS_NC_MODE_CNTL, 0, BIT(PIPE_BV) | BIT(PIPE_BR) }, +}; + +DECLARE_ADRENO_REGLIST_PIPE_LIST(a7xx_dyn_pwrup_reglist); + static const struct adreno_info a7xx_gpus[] = { { .chip_ids = ADRENO_CHIP_IDS(0x07000200), @@ -1492,6 +1497,7 @@ static const struct adreno_info a7xx_gpus[] = { .hwcg = a730_hwcg, .protect = &a730_protect, .pwrup_reglist = &a7xx_pwrup_reglist, + .dyn_pwrup_reglist = &a7xx_dyn_pwrup_reglist, .gbif_cx = a640_gbif, .gmu_cgc_mode = 0x00020000, }, @@ -1514,6 +1520,7 @@ static const struct adreno_info a7xx_gpus[] = { .hwcg = a740_hwcg, .protect = &a730_protect, .pwrup_reglist = &a7xx_pwrup_reglist, + .dyn_pwrup_reglist = &a7xx_dyn_pwrup_reglist, .gbif_cx = a640_gbif, .gmu_chipid = 0x7020100, .gmu_cgc_mode = 0x00020202, @@ -1548,6 +1555,7 @@ static const struct adreno_info a7xx_gpus[] = { .hwcg = a740_hwcg, .protect = &a730_protect, .pwrup_reglist = &a7xx_pwrup_reglist, + .dyn_pwrup_reglist = &a7xx_dyn_pwrup_reglist, .ifpc_reglist = &a750_ifpc_reglist, .gbif_cx = a640_gbif, .gmu_chipid = 0x7050001, @@ -1590,6 +1598,7 @@ static const struct adreno_info a7xx_gpus[] = { .a6xx = &(const struct a6xx_info) { .protect = &a730_protect, .pwrup_reglist = &a7xx_pwrup_reglist, + .dyn_pwrup_reglist = &a7xx_dyn_pwrup_reglist, .ifpc_reglist = &a750_ifpc_reglist, .gbif_cx = a640_gbif, .gmu_chipid = 0x7090100, @@ -1624,6 +1633,7 @@ static const struct adreno_info a7xx_gpus[] = { .hwcg = a740_hwcg, .protect = &a730_protect, .pwrup_reglist = &a7xx_pwrup_reglist, + .dyn_pwrup_reglist = &a7xx_dyn_pwrup_reglist, .gbif_cx = a640_gbif, .gmu_chipid = 0x70f0000, .gmu_cgc_mode = 0x00020222, diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c index 7e71f6bb5283..2129d230a92b 100644 --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c @@ -849,9 +849,16 @@ static void a6xx_set_ubwc_config(struct msm_gpu *gpu) min_acc_len_64b << 3 | hbb_lo << 1 | ubwc_mode); - if (adreno_is_a7xx(adreno_gpu)) - gpu_write(gpu, REG_A7XX_GRAS_NC_MODE_CNTL, - FIELD_PREP(GENMASK(8, 5), hbb_lo)); + if (adreno_is_a7xx(adreno_gpu)) { + for (u32 pipe_id = PIPE_BR; pipe_id <= PIPE_BV; pipe_id++) { + gpu_write(gpu, REG_A7XX_CP_APERTURE_CNTL_HOST, + A7XX_CP_APERTURE_CNTL_HOST_PIPE(pipe_id)); + gpu_write(gpu, REG_A7XX_GRAS_NC_MODE_CNTL, + FIELD_PREP(GENMASK(8, 5), hbb_lo)); + } + gpu_write(gpu, REG_A7XX_CP_APERTURE_CNTL_HOST, + A7XX_CP_APERTURE_CNTL_HOST_PIPE(PIPE_NONE)); + } gpu_write(gpu, REG_A6XX_UCHE_MODE_CNTL, min_acc_len_64b << 23 | hbb_lo << 21); @@ -865,9 +872,11 @@ static void a7xx_patch_pwrup_reglist(struct msm_gpu *gpu) struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu); const struct adreno_reglist_list *reglist; + const struct adreno_reglist_pipe_list *dyn_pwrup_reglist; void *ptr = a6xx_gpu->pwrup_reglist_ptr; struct cpu_gpu_lock *lock = ptr; u32 *dest = (u32 *)&lock->regs[0]; + u32 dyn_pwrup_reglist_count = 0; int i; lock->gpu_req = lock->cpu_req = lock->turn = 0; @@ -909,7 +918,24 @@ static void a7xx_patch_pwrup_reglist(struct msm_gpu *gpu) * (<aperture, shifted 12 bits> <address> <data>), and the length is * stored as number for triplets in dynamic_list_len. */ - lock->dynamic_list_len = 0; + dyn_pwrup_reglist = adreno_gpu->info->a6xx->dyn_pwrup_reglist; + if (dyn_pwrup_reglist) { + for (u32 pipe_id = PIPE_BR; pipe_id <= PIPE_BV; pipe_id++) { + gpu_write(gpu, REG_A7XX_CP_APERTURE_CNTL_HOST, + A7XX_CP_APERTURE_CNTL_HOST_PIPE(pipe_id)); + for (i = 0; i < dyn_pwrup_reglist->count; i++) { + if ((dyn_pwrup_reglist->regs[i].pipe & BIT(pipe_id)) == 0) + continue; + *dest++ = A7XX_CP_APERTURE_CNTL_HOST_PIPE(pipe_id); + *dest++ = dyn_pwrup_reglist->regs[i].offset; + *dest++ = gpu_read(gpu, dyn_pwrup_reglist->regs[i].offset); + dyn_pwrup_reglist_count++; + } + } + gpu_write(gpu, REG_A7XX_CP_APERTURE_CNTL_HOST, + A7XX_CP_APERTURE_CNTL_HOST_PIPE(PIPE_NONE)); + } + lock->dynamic_list_len = dyn_pwrup_reglist_count; } static int a7xx_preempt_start(struct msm_gpu *gpu) diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.h b/drivers/gpu/drm/msm/adreno/a6xx_gpu.h index 6820216ec5fc..4eaa04711246 100644 --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.h +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.h @@ -45,6 +45,7 @@ struct a6xx_info { const struct adreno_reglist *hwcg; const struct adreno_protect *protect; const struct adreno_reglist_list *pwrup_reglist; + const struct adreno_reglist_pipe_list *dyn_pwrup_reglist; const struct adreno_reglist_list *ifpc_reglist; const struct adreno_reglist *gbif_cx; const struct adreno_reglist_pipe *nonctxt_reglist; diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h index 0f8d3de97636..1d0145f8b3ec 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h @@ -188,6 +188,19 @@ static const struct adreno_reglist_list name = { \ .count = ARRAY_SIZE(name ## _regs), \ }; +struct adreno_reglist_pipe_list { + /** @reg: List of register **/ + const struct adreno_reglist_pipe *regs; + /** @count: Number of registers in the list **/ + u32 count; +}; + +#define DECLARE_ADRENO_REGLIST_PIPE_LIST(name) \ +static const struct adreno_reglist_pipe_list name = { \ + .regs = name ## _regs, \ + .count = ARRAY_SIZE(name ## _regs), \ +}; + struct adreno_gpu { struct msm_gpu base; const struct adreno_info *info;

3 days, 6 hours

FAILED: patch "[PATCH] drm/msm/dpu: Add missing NULL pointer check for pingpong" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.1-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y git checkout FETCH_HEAD git cherry-pick -x 88733a0b64872357e5ecd82b7488121503cb9cc6 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2026010518-urethane-exemption-8edc@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 88733a0b64872357e5ecd82b7488121503cb9cc6 Mon Sep 17 00:00:00 2001 From: Nikolay Kuratov <kniv(a)yandex-team.ru> Date: Thu, 11 Dec 2025 12:36:30 +0300 Subject: [PATCH] drm/msm/dpu: Add missing NULL pointer check for pingpong interface It is checked almost always in dpu_encoder_phys_wb_setup_ctl(), but in a single place the check is missing. Also use convenient locals instead of phys_enc->* where available. Cc: stable(a)vger.kernel.org Fixes: d7d0e73f7de33 ("drm/msm/dpu: introduce the dpu_encoder_phys_* for writeback") Signed-off-by: Nikolay Kuratov <kniv(a)yandex-team.ru> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov(a)oss.qualcomm.com> Patchwork: https://patchwork.freedesktop.org/patch/693860/ Link: https://lore.kernel.org/r/20251211093630.171014-1-kniv@yandex-team.ru Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov(a)oss.qualcomm.com> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c index 46f348972a97..6d28f2281c76 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c @@ -247,14 +247,12 @@ static void dpu_encoder_phys_wb_setup_ctl(struct dpu_encoder_phys *phys_enc) if (hw_cdm) intf_cfg.cdm = hw_cdm->idx; - if (phys_enc->hw_pp->merge_3d && phys_enc->hw_pp->merge_3d->ops.setup_3d_mode) - phys_enc->hw_pp->merge_3d->ops.setup_3d_mode(phys_enc->hw_pp->merge_3d, - mode_3d); + if (hw_pp && hw_pp->merge_3d && hw_pp->merge_3d->ops.setup_3d_mode) + hw_pp->merge_3d->ops.setup_3d_mode(hw_pp->merge_3d, mode_3d); /* setup which pp blk will connect to this wb */ - if (hw_pp && phys_enc->hw_wb->ops.bind_pingpong_blk) - phys_enc->hw_wb->ops.bind_pingpong_blk(phys_enc->hw_wb, - phys_enc->hw_pp->idx); + if (hw_pp && hw_wb->ops.bind_pingpong_blk) + hw_wb->ops.bind_pingpong_blk(hw_wb, hw_pp->idx); phys_enc->hw_ctl->ops.setup_intf_cfg(phys_enc->hw_ctl, &intf_cfg); } else if (phys_enc->hw_ctl && phys_enc->hw_ctl->ops.setup_intf_cfg) {

3 days, 6 hours

FAILED: patch "[PATCH] drm/mgag200: Fix big-endian support" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x 6cb31fba137d45e682ce455b8ea364f44d5d4f98 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2026010546-doorpost-resume-e2e2@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 6cb31fba137d45e682ce455b8ea364f44d5d4f98 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ren=C3=A9=20Rebe?= <rene(a)exactco.de> Date: Mon, 8 Dec 2025 14:18:27 +0100 Subject: [PATCH] drm/mgag200: Fix big-endian support MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Unlike the original, deleted Matrox mga driver, the new mgag200 driver has the XRGB frame-buffer byte swapped on big-endian "RISC" systems. Fix by enabling byte swapping "PowerPC" OPMODE for any __BIG_ENDIAN config. Fixes: 414c45310625 ("mgag200: initial g200se driver (v2)") Signed-off-by: René Rebe <rene(a)exactco.de> Cc: stable(a)kernel.org Reviewed-by: Thomas Zimmermann <tzimmermann(a)suse.de> Signed-off-by: Thomas Zimmermann <tzimmermann(a)suse.de> Link: https://patch.msgid.link/20251208.141827.965103015954471168.rene@exactco.de diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c index 951d715dea30..d019177462cf 100644 --- a/drivers/gpu/drm/mgag200/mgag200_mode.c +++ b/drivers/gpu/drm/mgag200/mgag200_mode.c @@ -161,6 +161,30 @@ static void mgag200_set_startadd(struct mga_device *mdev, WREG_ECRT(0x00, crtcext0); } +/* + * Set the opmode for the hardware swapper for Big-Endian processor + * support for the frame buffer aperture and DMAWIN space. + */ +static void mgag200_set_datasiz(struct mga_device *mdev, u32 format) +{ +#if defined(__BIG_ENDIAN) + u32 opmode = RREG32(MGAREG_OPMODE); + + opmode &= ~(GENMASK(17, 16) | GENMASK(9, 8) | GENMASK(3, 2)); + + /* Big-endian byte-swapping */ + switch (format) { + case DRM_FORMAT_RGB565: + opmode |= 0x10100; + break; + case DRM_FORMAT_XRGB8888: + opmode |= 0x20200; + break; + } + WREG32(MGAREG_OPMODE, opmode); +#endif +} + void mgag200_init_registers(struct mga_device *mdev) { u8 crtc11, misc; @@ -496,6 +520,7 @@ void mgag200_primary_plane_helper_atomic_update(struct drm_plane *plane, struct drm_atomic_helper_damage_iter iter; struct drm_rect damage; + mgag200_set_datasiz(mdev, fb->format->format); drm_atomic_helper_damage_iter_init(&iter, old_plane_state, plane_state); drm_atomic_for_each_plane_damage(&iter, &damage) { mgag200_handle_damage(mdev, shadow_plane_state->data, fb, &damage);

3 days, 6 hours

FAILED: patch "[PATCH] drm/mgag200: Fix big-endian support" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y git checkout FETCH_HEAD git cherry-pick -x 6cb31fba137d45e682ce455b8ea364f44d5d4f98 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2026010546-target-ligament-64fa@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 6cb31fba137d45e682ce455b8ea364f44d5d4f98 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ren=C3=A9=20Rebe?= <rene(a)exactco.de> Date: Mon, 8 Dec 2025 14:18:27 +0100 Subject: [PATCH] drm/mgag200: Fix big-endian support MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Unlike the original, deleted Matrox mga driver, the new mgag200 driver has the XRGB frame-buffer byte swapped on big-endian "RISC" systems. Fix by enabling byte swapping "PowerPC" OPMODE for any __BIG_ENDIAN config. Fixes: 414c45310625 ("mgag200: initial g200se driver (v2)") Signed-off-by: René Rebe <rene(a)exactco.de> Cc: stable(a)kernel.org Reviewed-by: Thomas Zimmermann <tzimmermann(a)suse.de> Signed-off-by: Thomas Zimmermann <tzimmermann(a)suse.de> Link: https://patch.msgid.link/20251208.141827.965103015954471168.rene@exactco.de diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c index 951d715dea30..d019177462cf 100644 --- a/drivers/gpu/drm/mgag200/mgag200_mode.c +++ b/drivers/gpu/drm/mgag200/mgag200_mode.c @@ -161,6 +161,30 @@ static void mgag200_set_startadd(struct mga_device *mdev, WREG_ECRT(0x00, crtcext0); } +/* + * Set the opmode for the hardware swapper for Big-Endian processor + * support for the frame buffer aperture and DMAWIN space. + */ +static void mgag200_set_datasiz(struct mga_device *mdev, u32 format) +{ +#if defined(__BIG_ENDIAN) + u32 opmode = RREG32(MGAREG_OPMODE); + + opmode &= ~(GENMASK(17, 16) | GENMASK(9, 8) | GENMASK(3, 2)); + + /* Big-endian byte-swapping */ + switch (format) { + case DRM_FORMAT_RGB565: + opmode |= 0x10100; + break; + case DRM_FORMAT_XRGB8888: + opmode |= 0x20200; + break; + } + WREG32(MGAREG_OPMODE, opmode); +#endif +} + void mgag200_init_registers(struct mga_device *mdev) { u8 crtc11, misc; @@ -496,6 +520,7 @@ void mgag200_primary_plane_helper_atomic_update(struct drm_plane *plane, struct drm_atomic_helper_damage_iter iter; struct drm_rect damage; + mgag200_set_datasiz(mdev, fb->format->format); drm_atomic_helper_damage_iter_init(&iter, old_plane_state, plane_state); drm_atomic_for_each_plane_damage(&iter, &damage) { mgag200_handle_damage(mdev, shadow_plane_state->data, fb, &damage);

3 days, 6 hours

WTF: patch "[PATCH] drm: nouveau: Replace sprintf() with sysfs_emit()" was seriously submitted to be applied to the 6.18-stable tree?

by gregkh＠linuxfoundation.org

The patch below was submitted to be applied to the 6.18-stable tree. I fail to see how this patch meets the stable kernel rules as found at Documentation/process/stable-kernel-rules.rst. I could be totally wrong, and if so, please respond to <stable(a)vger.kernel.org> and let me know why this patch should be applied. Otherwise, it is now dropped from my patch queues, never to be seen again. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 979e2ec58de2b600955b8290d1df549e33d67347 Mon Sep 17 00:00:00 2001 From: Madhur Kumar <madhurkumar004(a)gmail.com> Date: Fri, 5 Dec 2025 14:48:04 +0530 Subject: [PATCH] drm: nouveau: Replace sprintf() with sysfs_emit() Replace sprintf() calls with sysfs_emit() to follow current kernel coding standards. sysfs_emit() is the preferred method for formatting sysfs output as it provides better bounds checking and is more secure. Signed-off-by: Madhur Kumar <madhurkumar004(a)gmail.com> Reviewed-by: Lyude Paul <lyude(a)redhat.com> Signed-off-by: Lyude Paul <lyude(a)redhat.com> Link: https://patch.msgid.link/20251205091804.317801-1-madhurkumar004@gmail.com Fixes: 11b7d895216f ("drm/nouveau/pm: manual pwm fanspeed management for nv40+ boards") Cc: <stable(a)vger.kernel.org> # v3.3+ diff --git a/drivers/gpu/drm/nouveau/nouveau_hwmon.c b/drivers/gpu/drm/nouveau/nouveau_hwmon.c index 5c07a9ee8b77..34effe6d86ad 100644 --- a/drivers/gpu/drm/nouveau/nouveau_hwmon.c +++ b/drivers/gpu/drm/nouveau/nouveau_hwmon.c @@ -125,7 +125,7 @@ nouveau_hwmon_get_pwm1_max(struct device *d, if (ret < 0) return ret; - return sprintf(buf, "%i\n", ret); + return sysfs_emit(buf, "%i\n", ret); } static ssize_t @@ -141,7 +141,7 @@ nouveau_hwmon_get_pwm1_min(struct device *d, if (ret < 0) return ret; - return sprintf(buf, "%i\n", ret); + return sysfs_emit(buf, "%i\n", ret); } static ssize_t

3 days, 6 hours

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