linux-kernel - [PATCH] PCI: mvebu: Make use of the helper function devm_add_action_or

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Date:   Wed, 22 Sep 2021 21:00:08 +0800
From:   Cai Huoqing <caihuoqing@...du.com>
To:     <caihuoqing@...du.com>
CC:     Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        <linux-pci@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] PCI: mvebu: 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/pci/controller/pci-mvebu.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/pci/controller/pci-mvebu.c b/drivers/pci/controller/pci-mvebu.c
index ed13e81cd691..cd387f235b7f 100644
--- a/drivers/pci/controller/pci-mvebu.c
+++ b/drivers/pci/controller/pci-mvebu.c
@@ -897,11 +897,9 @@ static int mvebu_pcie_parse_port(struct mvebu_pcie *pcie,
 		goto skip;
 	}
 
-	ret = devm_add_action(dev, mvebu_pcie_port_clk_put, port);
-	if (ret < 0) {
-		clk_put(port->clk);
+	ret = devm_add_action_or_reset(dev, mvebu_pcie_port_clk_put, port);
+	if (ret < 0)
 		goto err;
-	}
 
 	return 1;
 
-- 
2.25.1