This is a note to let you know that I've just added the patch titled
drm/amd/display: Fix a test CalculatePrefetchSchedule()
to the 6.4-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:
drm-amd-display-fix-a-test-calculateprefetchschedule.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 2e6073d29b55b124ef8d43247db3df30e4b74186
Author: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
Date: Mon Apr 17 23:35:08 2023 +0200
drm/amd/display: Fix a test CalculatePrefetchSchedule()
[ Upstream commit 960e27a5741cd3001996ff6ddfb3eb0ed3a4909d ]
It is likely Height was expected here, instead of Width.
Test the correct variable.
Fixes: 17529ea2acfa ("drm/amd/display: Optimizations for DML math")
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c b/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c
index b7c2844d0cbee..f294f2f8c75bc 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c
@@ -810,7 +810,7 @@ static bool CalculatePrefetchSchedule(
*swath_width_chroma_ub = dml_ceil(SwathWidthY / 2 - 1, myPipe->BlockWidth256BytesC) + myPipe->BlockWidth256BytesC;
} else {
*swath_width_luma_ub = dml_ceil(SwathWidthY - 1, myPipe->BlockHeight256BytesY) + myPipe->BlockHeight256BytesY;
- if (myPipe->BlockWidth256BytesC > 0)
+ if (myPipe->BlockHeight256BytesC > 0)
*swath_width_chroma_ub = dml_ceil(SwathWidthY / 2 - 1, myPipe->BlockHeight256BytesC) + myPipe->BlockHeight256BytesC;
}
