From: Roman Li <roman.li@amd.com>
Date: Tue, 1 Sep 2020 01:30:26 +0000 (-0400)
Subject: drm/amd/display: fix compile warning in dml
X-Git-Tag: v5.10.7~1332^2~18^2~72
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=de32a50be7ab2da22002678926242d69e90933cc;p=platform%2Fkernel%2Flinux-rpi.git

drm/amd/display: fix compile warning in dml

[Why]
gcc version 5.4.0 fails compilation with:
‘PixelPTEReqHeightPTEs’ may be used uninitialized in this function
[-Werror=maybe-uninitialized]

[How]
Initialized variable explicitly with 0

Signed-off-by: Roman Li <roman.li@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

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 a576eed..367c82b 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
@@ -1294,7 +1294,7 @@ static unsigned int CalculateVMAndRowBytes(
 	unsigned int MacroTileHeight;
 	unsigned int ExtraDPDEBytesFrame;
 	unsigned int PDEAndMetaPTEBytesFrame;
-	unsigned int PixelPTEReqHeightPTEs;
+	unsigned int PixelPTEReqHeightPTEs = 0;
 
 	if (DCCEnable == true) {
 		*MetaRequestHeight = 8 * BlockHeight256Bytes;