linux-kernel - [PATCH 06/14] drm/i2c: tda9950: Replace devm_add_action() followed by failure action with devm_add_action_or

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Date:   Mon,  8 Jul 2019 20:33:15 +0800
From:   Fuqian Huang <huangfq.daxian@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Fuqian Huang <huangfq.daxian@...il.com>
Subject: [PATCH 06/14] drm/i2c: tda9950: Replace devm_add_action() followed by failure action with devm_add_action_or_reset()

devm_add_action_or_reset() is introduced as a helper function which 
internally calls devm_add_action(). If devm_add_action() fails 
then it will execute the action mentioned and return the error code.
This reduce source code size (avoid writing the action twice) 
and reduce the likelyhood of bugs.

Signed-off-by: Fuqian Huang <huangfq.daxian@...il.com>
---
 drivers/gpu/drm/i2c/tda9950.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i2c/tda9950.c b/drivers/gpu/drm/i2c/tda9950.c
index 8039fc0d83db..042f6487e6fb 100644
--- a/drivers/gpu/drm/i2c/tda9950.c
+++ b/drivers/gpu/drm/i2c/tda9950.c
@@ -361,9 +361,7 @@ static int tda9950_devm_glue_init(struct device *dev, struct tda9950_glue *glue)
 			return ret;
 	}
 
-	ret = devm_add_action(dev, tda9950_devm_glue_exit, glue);
-	if (ret)
-		tda9950_devm_glue_exit(glue);
+	ret = devm_add_action_or_reset(dev, tda9950_devm_glue_exit, glue);
 
 	return ret;
 }
-- 
2.11.0