From:   cgel.zte@gmail.com
To:     Jani Nikula <jani.nikula@linux.intel.com>
Cc:     Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@intel.com>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>,
        Stephen Rothwell <sfr@canb.auug.org.au>,
        intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
        linux-kernel@vger.kernel.org, luo penghao <luo.penghao@zte.com.cn>,
        Zeal Robot <zealci@zte.com.cn>
Subject: [PATCH linux-next] drm/i915/display: Delete redundant post_mask assignment
Date:   Wed,  8 Dec 2021 07:46:19 +0000
Message-Id: <20211208074619.404138-1-luo.penghao@zte.com.cn>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

From: luo penghao <luo.penghao@zte.com.cn>

This value will be overwritten by the following if statement, even
if the if is not executed, the value will not be used

The clang_analyzer complains as follows:

Value stored to 'port_mask' is never read

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: luo penghao <luo.penghao@zte.com.cn>
---
 drivers/gpu/drm/i915/display/intel_ddi.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index bd18432..3aad0c3 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -2011,7 +2011,6 @@ void intel_ddi_sanitize_encoder_pll_mapping(struct intel_encoder *encoder)
 			return;
 	}
 
-	port_mask = BIT(encoder->port);
 	ddi_clk_needed = encoder->base.crtc;
 
 	if (encoder->type == INTEL_OUTPUT_DSI) {
-- 
2.15.2