linux-kernel - [PATCH] drm/amd/display: Return value of function

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Message-Id: <20230803141116.58883-1-arefev@swemel.ru>
Date:   Thu,  3 Aug 2023 17:11:16 +0300
From:   Denis Arefev <arefev@...mel.ru>
To:     Harry Wentland <harry.wentland@....com>
Cc:     Leo Li <sunpeng.li@....com>,
        Rodrigo Siqueira <Rodrigo.Siqueira@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Wenjing Liu <wenjing.liu@....com>, Jun Lei <Jun.Lei@....com>,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, lvc-project@...uxtesting.org,
        trufanov@...mel.ru, vfh@...mel.ru
Subject: [PATCH] drm/amd/display: Return value of function

Added return value check hpd_enable

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Signed-off-by: Denis Arefev <arefev@...mel.ru>
---
 drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
index fa314493ffc5..bf2f620aeb66 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
@@ -1645,7 +1645,7 @@ void dce110_link_encoder_enable_hpd(struct link_encoder *enc)
 	uint32_t hpd_enable = 0;
 	uint32_t value = dm_read_reg(ctx, addr);
 
-	get_reg_field_value(hpd_enable, DC_HPD_CONTROL, DC_HPD_EN);
+	hpd_enable = get_reg_field_value(hpd_enable, DC_HPD_CONTROL, DC_HPD_EN);
 
 	if (hpd_enable == 0)
 		set_reg_field_value(value, 1, DC_HPD_CONTROL, DC_HPD_EN);
-- 
2.25.1