diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index 58fb9f4c3d0d..02650824cde4 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -184,7 +184,7 @@ int vop_plane_dump(struct vop_dump_info *dump_info, int frame_count)
 			 width, dump_info->height, get_format_str(format),
 			 "bin");
 	} else {
-		width = dump_info->pitches >> 2;
+		width = dump_info->pitches * 8 / bpp;
 		flags = O_RDWR | O_CREAT;
 		snprintf(file_name, 100, "%s/win%d_area%d_%dx%d_%s%s%d.%s",
 			 DUMP_BUF_PATH, dump_info->win_id,