On Wed, May 4, 2022 at 12:50 PM Mike Lothian mike@fireburn.co.uk wrote:
This stops clang complaining:
drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c:3846:6: warning: variable 'index' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized] if (ring->is_mes_queue) { ^~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c:3903:30: note: uninitialized use occurs here amdgpu_device_wb_free(adev, index); ^~~~~ drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c:3846:2: note: remove the 'if' if its condition is always false if (ring->is_mes_queue) { ^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c:3839:16: note: initialize the variable 'index' to silence this warning unsigned index; ^ = 0
Thanks for the patches. The proper fix for patches 1 and 2 is to protect amdgpu_device_wb_free() with if (!ring->is_mes_queue). Care to rework the patches that way?
Alex
Signed-off-by: Mike Lothian mike@fireburn.co.uk
drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c index fc289ee54a47..7ce62b12e5b4 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c @@ -3836,7 +3836,7 @@ static int gfx_v10_0_ring_test_ib(struct amdgpu_ring *ring, long timeout) struct amdgpu_device *adev = ring->adev; struct amdgpu_ib ib; struct dma_fence *f = NULL;
unsigned index;
unsigned index = 0; uint64_t gpu_addr; volatile uint32_t *cpu_ptr; long r;-- 2.35.1