From: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Date: Thu, 18 Apr 2024 23:39:39 +0000 (-0600)
Subject: drm/amd/display: Handle the case which quad_part is equal 0
X-Git-Tag: v6.11-rc1~141^2~25^2~545
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=02fb803db110dbdac9f0d446180f0f7b545e15ff;p=thirdparty%2Fkernel%2Flinux.git

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

Add code to handle case when quad_part is 0 in gpu_addr_to_uma().

Acked-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

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 6be846635a798..59f46df015511 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;
 }