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path: root/drivers/gpu/drm/udl/udl_fb.c
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Diffstat (limited to 'drivers/gpu/drm/udl/udl_fb.c')
-rw-r--r--drivers/gpu/drm/udl/udl_fb.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c
index 67ea2ce03a23..39d0fdcb17d2 100644
--- a/drivers/gpu/drm/udl/udl_fb.c
+++ b/drivers/gpu/drm/udl/udl_fb.c
@@ -136,7 +136,10 @@ int udl_handle_damage(struct udl_framebuffer *fb, int x, int y,
if (cmd > (char *) urb->transfer_buffer) {
/* Send partial buffer remaining before exiting */
- int len = cmd - (char *) urb->transfer_buffer;
+ int len;
+ if (cmd < (char *) urb->transfer_buffer + urb->transfer_buffer_length)
+ *cmd++ = 0xAF;
+ len = cmd - (char *) urb->transfer_buffer;
ret = udl_submit_urb(dev, urb, len);
bytes_sent += len;
} else