linux-kernel - [PATCH v2 -next] drm/komeda: remove set but not used variable 'old'

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Message-ID: <20190722055627.38008-1-yuehaibing@huawei.com>
Date:   Mon, 22 Jul 2019 13:56:27 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     <james.qian.wang@....com>, <liviu.dudau@....com>,
        <brian.starkey@....com>, <airlied@...ux.ie>
CC:     <linux-kernel@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>,
        <daniel@...ll.ch>, YueHaibing <yuehaibing@...wei.com>
Subject: [PATCH v2 -next] drm/komeda: remove set but not used variable 'old'

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/gpu/drm/arm/display/komeda/komeda_plane.c:
 In function komeda_plane_atomic_duplicate_state:
drivers/gpu/drm/arm/display/komeda/komeda_plane.c:161:35:
 warning: variable old set but not used [-Wunused-but-set-variable

It is not used since commit 990dee3aa456 ("drm/komeda:
Computing image enhancer internally")

Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: YueHaibing <yuehaibing@...wei.com>
---
v2: fix compile err
---
 drivers/gpu/drm/arm/display/komeda/komeda_plane.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_plane.c b/drivers/gpu/drm/arm/display/komeda/komeda_plane.c
index c095af1..98e915e 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_plane.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_plane.c
@@ -158,7 +158,7 @@ static void komeda_plane_reset(struct drm_plane *plane)
 static struct drm_plane_state *
 komeda_plane_atomic_duplicate_state(struct drm_plane *plane)
 {
-	struct komeda_plane_state *new, *old;
+	struct komeda_plane_state *new;
 
 	if (WARN_ON(!plane->state))
 		return NULL;
@@ -169,8 +169,6 @@ komeda_plane_atomic_duplicate_state(struct drm_plane *plane)
 
 	__drm_atomic_helper_plane_duplicate_state(plane, &new->base);
 
-	old = to_kplane_st(plane->state);
-
 	return &new->base;
 }
 
-- 
2.7.4