linux-kernel - [PATCH] PCI: xilinx-xdma: Use devm_platform_ioremap_resource

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Message-ID: <20250403154654546Uoj1gN_pronbxhSLPEIUn@zte.com.cn>
Date: Thu, 3 Apr 2025 15:46:54 +0800 (CST)
From: <shao.mingyin@....com.cn>
To: <lpieralisi@...nel.org>
Cc: <kw@...ux.com>, <manivannan.sadhasivam@...aro.org>, <robh@...nel.org>,
        <bhelgaas@...gle.com>, <michal.simek@....com>,
        <linux-pci@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <yang.yang29@....com.cn>,
        <xu.xin16@....com.cn>, <ye.xingchen@....com.cn>,
        <xie.ludan@....com.cn>
Subject: [PATCH] PCI: xilinx-xdma: Use devm_platform_ioremap_resource_byname  

From: Xie Ludan <xie.ludan@....com.cn>

Introduce devm_platform_ioremap_resource_byname() to simplify
resource retrieval and mapping.This new function consolidates
platform_get_resource_byname() and devm_ioremap_resource() into a single
call, improving code readability and reducing API call overhead.

Signed-off-by: Xie Ludan <xie.ludan@....com.cn>
Signed-off-by: Shao Mingyin <shao.mingyin@....com.cn>
---
 drivers/pci/controller/pcie-xilinx-dma-pl.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/pci/controller/pcie-xilinx-dma-pl.c b/drivers/pci/controller/pcie-xilinx-dma-pl.c
index dd117f07fc95..238deec3b948 100644
--- a/drivers/pci/controller/pcie-xilinx-dma-pl.c
+++ b/drivers/pci/controller/pcie-xilinx-dma-pl.c
@@ -753,8 +753,7 @@ static int xilinx_pl_dma_pcie_parse_dt(struct pl_dma_pcie *port,

 	if (port->variant->version == QDMA) {
 		port->cfg_base = port->cfg->win;
-		res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "breg");
-		port->reg_base = devm_ioremap_resource(dev, res);
+		port->reg_base = devm_platform_ioremap_resource_byname(pdev, "breg");
 		if (IS_ERR(port->reg_base))
 			return PTR_ERR(port->reg_base);
 		port->phys_reg_base = res->start;
-- 
2.25.1