The patch is Reviewed-by: Sathishkumar S <sathishkumar.sundararaju@xxxxxxx>
Regards,
Sathish
On 10/3/2024 3:56 PM, Advait Dhamorikar wrote:
Fix shift-count-overflow in JPEG instance
multiplication. The expression's value may not be
what the programmer intended, because the expression
is evaluated using a narrower integer type.
Fixes: f0b19b84d391 ("drm/amdgpu: add amdgpu_jpeg_sched_mask debugfs")
Signed-off-by: Advait Dhamorikar <advaitdhamorikar@xxxxxxxxx>
---
V1 -> V2: addressed review comments
drivers/gpu/drm/amd/amdgpu/amdgpu_jpeg.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_jpeg.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_jpeg.c
index 95e2796919fc..b6f0435f56ba 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_jpeg.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_jpeg.c
@@ -357,7 +357,7 @@ static int amdgpu_debugfs_jpeg_sched_mask_set(void *data, u64 val)
if (!adev)
return -ENODEV;
- mask = (1 << (adev->jpeg.num_jpeg_inst * adev->jpeg.num_jpeg_rings)) - 1;
+ mask = ((uint64_t)1 << (adev->jpeg.num_jpeg_inst * adev->jpeg.num_jpeg_rings)) - 1;
if ((val & mask) == 0)
return -EINVAL;
