linux-kernel - [PATCH] drm/amd/display:fix a warning

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Message-Id: <20200302083506.10312-1-tangbin@cmss.chinamobile.com>
Date:   Mon,  2 Mar 2020 16:35:06 +0800
From:   tangbin <tangbin@...s.chinamobile.com>
To:     harry.wentland@....com
Cc:     sunpeng.li@....com, alexander.deucher@....com,
        christian.koenig@....com, David1.Zhou@....com, airlied@...ux.ie,
        daniel@...ll.ch, linux-kernel@...r.kernel.org,
        tangbin <tangbin@...s.chinamobile.com>
Subject: [PATCH] drm/amd/display:fix a warning

When I compile the code in X86,there is a warning about
"'PixelPTEReqHeightPTES' may be used uninitialized in
this function".

Signed-off-by: tangbin <tangbin@...s.chinamobile.com>
---
 drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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 e6617c958..29dad2cc7 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;
-- 
2.20.1.windows.1