drm/radeon: check for allocation failure in radeon_ring_backup()
Static checkers complain if this we don't check for allocation failure.
Also we can use the new kmalloc_array() function here as a cleanup.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon_ring.c b/drivers/gpu/drm/radeon/radeon_ring.c
index f2fc25d..ec79b37 100644
--- a/drivers/gpu/drm/radeon/radeon_ring.c
+++ b/drivers/gpu/drm/radeon/radeon_ring.c
@@ -594,7 +594,11 @@
}
/* and then save the content of the ring */
- *data = kmalloc(size * 4, GFP_KERNEL);
+ *data = kmalloc_array(size, sizeof(uint32_t), GFP_KERNEL);
+ if (!*data) {
+ mutex_unlock(&rdev->ring_lock);
+ return 0;
+ }
for (i = 0; i < size; ++i) {
(*data)[i] = ring->ring[ptr++];
ptr &= ring->ptr_mask;