"ctx" is dereferenced but null checked later. Swap their positions to avoid potential null dereference.
Found using a Coccinelle script: https://coccinelle.gitlabpages.inria.fr/website/rules/mini_null_ref.cocci Signed-off-by: Weiguo Li <liw...@foxmail.com> --- drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c index f522b52725e4..b4f035ce44bc 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c @@ -258,11 +258,12 @@ static void amdgpu_ctx_fini_entity(struct amdgpu_ctx_entity *entity) static int amdgpu_ctx_get_stable_pstate(struct amdgpu_ctx *ctx, u32 *stable_pstate) { - struct amdgpu_device *adev = ctx->adev; + struct amdgpu_device *adev; enum amd_dpm_forced_level current_level; if (!ctx) return -EINVAL; + adev = ctx->adev; current_level = amdgpu_dpm_get_performance_level(adev); @@ -289,12 +290,13 @@ static int amdgpu_ctx_get_stable_pstate(struct amdgpu_ctx *ctx, static int amdgpu_ctx_set_stable_pstate(struct amdgpu_ctx *ctx, u32 stable_pstate) { - struct amdgpu_device *adev = ctx->adev; + struct amdgpu_device *adev; enum amd_dpm_forced_level level; int r; if (!ctx) return -EINVAL; + adev = ctx->adev; mutex_lock(&adev->pm.stable_pstate_ctx_lock); if (adev->pm.stable_pstate_ctx && adev->pm.stable_pstate_ctx != ctx) { -- 2.25.1
