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authorAkhil P Oommen <akhilpo@oss.qualcomm.com>2025-11-18 14:20:28 +0530
committerRob Clark <robin.clark@oss.qualcomm.com>2025-11-18 07:31:59 -0800
commit779b68a5bf2764c8ed3aa800e41ba0d5d007e1e7 (patch)
treea98159b7dcb2ca192837852b9f8d4737a9a96ded
parent036b3531a71eae6d5f1b4720696f6a6114d4f31f (diff)
drm/msm/a6xx: Fix out of bound IO access in a6xx_get_gmu_registers
REG_A6XX_GMU_AO_AHB_FENCE_CTRL register falls under GMU's register range. So, use gmu_write() routines to write to this register. Fixes: 1707add81551 ("drm/msm/a6xx: Add a6xx gpu state") Cc: stable@vger.kernel.org Signed-off-by: Akhil P Oommen <akhilpo@oss.qualcomm.com> Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com> Patchwork: https://patchwork.freedesktop.org/patch/688993/ Message-ID: <20251118-kaana-gpu-support-v4-1-86eeb8e93fb6@oss.qualcomm.com> Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>
-rw-r--r--drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
index 838150ff49ab..d2d6b2fd3cba 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
@@ -1255,7 +1255,7 @@ static void a6xx_get_gmu_registers(struct msm_gpu *gpu,
return;
/* Set the fence to ALLOW mode so we can access the registers */
- gpu_write(gpu, REG_A6XX_GMU_AO_AHB_FENCE_CTRL, 0);
+ gmu_write(&a6xx_gpu->gmu, REG_A6XX_GMU_AO_AHB_FENCE_CTRL, 0);
_a6xx_get_gmu_registers(gpu, a6xx_state, &a6xx_gmu_reglist[2],
&a6xx_state->gmu_registers[3], false);