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authorIngo Molnar <mingo@kernel.org>2018-07-25 11:47:02 +0200
committerIngo Molnar <mingo@kernel.org>2018-07-25 11:47:02 +0200
commit93081caaaed6a40a4f6d9b7ba3f581a4bb1d4404 (patch)
treef574201ba58ddf9e6264f463e613066cfc8532ba /drivers/gpu/drm/udl/udl_fb.c
parent788faab70d5a882693286b8d5022779559c79904 (diff)
parent7f635ff187ab6be0b350b3ec06791e376af238ab (diff)
Merge branch 'perf/urgent' into perf/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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 2ebdc6d5a76e..d5583190f3e4 100644
--- a/drivers/gpu/drm/udl/udl_fb.c
+++ b/drivers/gpu/drm/udl/udl_fb.c
@@ -137,7 +137,10 @@ 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