linux-kernel - [PATCH] PCI: mediatek-gen3: Make use of the helper function devm_platform_ioremap_resource

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Message-ID: <20210901074006.8783-1-caihuoqing@baidu.com>
Date:   Wed, 1 Sep 2021 15:40:06 +0800
From:   Cai Huoqing <caihuoqing@...du.com>
To:     <caihuoqing@...du.com>
CC:     Ryder Lee <ryder.lee@...iatek.com>,
        Jianjun Wang <jianjun.wang@...iatek.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        <linux-pci@...r.kernel.org>, <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH] PCI: mediatek-gen3: Make use of the helper function devm_platform_ioremap_resource_byname()

Use the devm_platform_ioremap_resource_byname() helper instead of
calling platform_get_resource_byname() and devm_ioremap_resource()
separately

Signed-off-by: Cai Huoqing <caihuoqing@...du.com>
---
 drivers/pci/controller/pcie-mediatek-gen3.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/pci/controller/pcie-mediatek-gen3.c b/drivers/pci/controller/pcie-mediatek-gen3.c
index 17c59b0d6978..014747c6dcd4 100644
--- a/drivers/pci/controller/pcie-mediatek-gen3.c
+++ b/drivers/pci/controller/pcie-mediatek-gen3.c
@@ -715,10 +715,7 @@ static int mtk_pcie_parse_port(struct mtk_pcie_port *port)
 	struct resource *regs;
 	int ret;
 
-	regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pcie-mac");
-	if (!regs)
-		return -EINVAL;
-	port->base = devm_ioremap_resource(dev, regs);
+	port->base = devm_platform_ioremap_resource_byname(pdev, "pcie-mac");
 	if (IS_ERR(port->base)) {
 		dev_err(dev, "failed to map register base\n");
 		return PTR_ERR(port->base);
-- 
2.25.1