Within X server, on top of DisplayLink GPU USB2.0 device,
screen content is not refreshed i.e. updated.
This fixes commit:
- e375882406d0cc24030746638592004755ed4ae0
"drm/udl: Use drm_fb_helper deferred_io support"
Thanks Noralf and Daniel for the comments.
Tested-by: poma <poma@xxxxxxxxx>
---
drivers/gpu/drm/udl/udl_fb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c
index d5df555..cc2daba 100644
--- a/drivers/gpu/drm/udl/udl_fb.c
+++ b/drivers/gpu/drm/udl/udl_fb.c
@@ -122,7 +122,7 @@ int udl_handle_damage(struct udl_framebuffer *fb, int x, int y,
return 0;
cmd = urb->transfer_buffer;
- for (i = y; i < height ; i++) {
+ for (i = y; i < y + height ; i++) {
const int line_offset = fb->base.pitches[0] * i;
const int byte_offset = line_offset + (x * bpp);
const int dev_byte_offset = (fb->base.width * bpp * i) + (x * bpp);
--
2.7.4
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