[PATCH V2] drm/amdgpu: fix the warning about the expression (int)size - len

[Jesse Zhang]

Converting size from size_t to int may overflow.
v2: keep reverse xmas tree order (Christian)

Signed-off-by: Jesse Zhang <Jesse.Zhang at amd.com>

---
 drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index f5d0fa207a88..eed60d4b3390 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -2065,12 +2065,13 @@ static ssize_t amdgpu_reset_dump_register_list_write(struct file *f,
 	struct amdgpu_device *adev = (struct amdgpu_device *)file_inode(f)->i_private;
 	char reg_offset[11];
 	uint32_t *new = NULL, *tmp = NULL;
+	unsigned int len = 0;
 	int ret, i = 0, len = 0;
 
 	do {
 		memset(reg_offset, 0, 11);
 		if (copy_from_user(reg_offset, buf + len,
-					min(10, ((int)size-len)))) {
+					min(10, (size-len)))) {
 			ret = -EFAULT;
 			goto error_free;
 		}
-- 
2.25.1