1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
index 74a65a61fd23..1acaa8473629 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
@@ -241,7 +241,7 @@ static int amdgpu_ras_debugfs_ctrl_parse_data(struct file *f,
                 op = 1;
         else if (sscanf(str, "inject %32s %8s", block_name, err) == 2)
                 op = 2;
-        else if (sscanf(str, "%32s", block_name) == 1)
+        else if (str[0] && str[1] && str[2] && str[3])
                 /* ascii string, but commands are not matched. */
                 return -EINVAL;