This is a note to let you know that I've just added the patch titled
fbdev: stifb: Fall back to cfb_fillrect() on 32-bit HCRX cards
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
fbdev-stifb-fall-back-to-cfb_fillrect-on-32-bit-hcrx.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit ec41e8fb431f7470bb09c29062282e676bec1012
Author: Helge Deller <deller@xxxxxx>
Date: Fri Oct 14 20:01:17 2022 +0200
fbdev: stifb: Fall back to cfb_fillrect() on 32-bit HCRX cards
[ Upstream commit 776d875fd4cbb3884860ea7f63c3958f02b0c80e ]
When the text console is scrolling text upwards it calls the fillrect()
function to empty the new line. The current implementation doesn't seem
to work correctly on HCRX cards in 32-bit mode and leave garbage in that
line instead. Fix it by falling back to standard cfb_fillrect() in that
case.
Signed-off-by: Helge Deller <deller@xxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/video/fbdev/stifb.c b/drivers/video/fbdev/stifb.c
index 7753e586e65a..3feb6e40d56d 100644
--- a/drivers/video/fbdev/stifb.c
+++ b/drivers/video/fbdev/stifb.c
@@ -1055,7 +1055,8 @@ stifb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
struct stifb_info *fb = container_of(info, struct stifb_info, info);
- if (rect->rop != ROP_COPY)
+ if (rect->rop != ROP_COPY ||
+ (fb->id == S9000_ID_HCRX && fb->info.var.bits_per_pixel == 32))
return cfb_fillrect(info, rect);
SETUP_HW(fb);
