linux-kernel - [PATCH] memory: tegra: Make use of the helper function devm_add_action_or

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Date:   Wed, 22 Sep 2021 21:00:01 +0800
From:   Cai Huoqing <caihuoqing@...du.com>
To:     <caihuoqing@...du.com>
CC:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        <linux-kernel@...r.kernel.org>, <linux-tegra@...r.kernel.org>
Subject: [PATCH] memory: tegra: Make use of the helper function devm_add_action_or_reset()

The helper function devm_add_action_or_reset() will internally
call devm_add_action(), and if devm_add_action() fails then it will
execute the action mentioned and return the error code. So
use devm_add_action_or_reset() instead of devm_add_action()
to simplify the error handling, reduce the code.

Signed-off-by: Cai Huoqing <caihuoqing@...du.com>
---
 drivers/memory/tegra/mc.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/memory/tegra/mc.c b/drivers/memory/tegra/mc.c
index 6b710c204799..44b4a4080920 100644
--- a/drivers/memory/tegra/mc.c
+++ b/drivers/memory/tegra/mc.c
@@ -87,11 +87,9 @@ struct tegra_mc *devm_tegra_memory_controller_get(struct device *dev)
 		return ERR_PTR(-EPROBE_DEFER);
 	}
 
-	err = devm_add_action(dev, tegra_mc_devm_action_put_device, mc);
-	if (err) {
-		put_device(mc->dev);
+	err = devm_add_action_or_reset(dev, tegra_mc_devm_action_put_device, mc);
+	if (err)
 		return ERR_PTR(err);
-	}
 
 	return mc;
 }
-- 
2.25.1