Patch "drm/amd/display: Handle the case which quad_part is equal 0" has been added to the 6.10-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    drm/amd/display: Handle the case which quad_part is equal 0

to the 6.10-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-handle-the-case-which-quad_part-is-e.patch
and it can be found in the queue-6.10 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 86ee19a4bd2c2e9e19336be7dcec5b656938cb13
Author: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>
Date:   Thu Apr 18 17:39:39 2024 -0600

    drm/amd/display: Handle the case which quad_part is equal 0
    
    [ Upstream commit 02fb803db110dbdac9f0d446180f0f7b545e15ff ]
    
    Add code to handle case when quad_part is 0 in gpu_addr_to_uma().
    
    Acked-by: Wayne Lin <wayne.lin@xxxxxxx>
    Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>
    Tested-by: Daniel Wheeler <daniel.wheeler@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/hwss/dcn201/dcn201_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn201/dcn201_hwseq.c
index 6be846635a79..59f46df01551 100644
--- a/drivers/gpu/drm/amd/display/dc/hwss/dcn201/dcn201_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn201/dcn201_hwseq.c
@@ -95,8 +95,11 @@ static bool gpu_addr_to_uma(struct dce_hwseq *hwseq,
 	} else if (hwseq->fb_offset.quad_part <= addr->quad_part &&
 			addr->quad_part <= hwseq->uma_top.quad_part) {
 		is_in_uma = true;
+	} else if (addr->quad_part == 0) {
+		is_in_uma = false;
 	} else {
 		is_in_uma = false;
+		BREAK_TO_DEBUGGER();
 	}
 	return is_in_uma;
 }