linux-kernel - [PATCH] misc/pvpanic: Use devm_platform_ioremap_resource() in pvpanic_mmio

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Message-ID: <4fa1c1b3-71db-4d8d-ddc9-86219b74b87d@web.de>
Date:   Wed, 18 Sep 2019 14:10:19 +0200
From:   Markus Elfring <Markus.Elfring@....de>
To:     kernel-janitors@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Peng Hao <peng.hao2@....com.cn>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Himanshu Jha <himanshujha199640@...il.com>
Subject: [PATCH] misc/pvpanic: Use devm_platform_ioremap_resource() in
 pvpanic_mmio_probe()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Wed, 18 Sep 2019 14:00:13 +0200

Simplify this function implementation by using a known wrapper function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/misc/pvpanic.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/misc/pvpanic.c b/drivers/misc/pvpanic.c
index 95ff7c5a1dfb..74bcdd171558 100644
--- a/drivers/misc/pvpanic.c
+++ b/drivers/misc/pvpanic.c
@@ -137,13 +137,7 @@ static void pvpanic_unregister_acpi_driver(void) {}

 static int pvpanic_mmio_probe(struct platform_device *pdev)
 {
-	struct resource *mem;
-
-	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!mem)
-		return -EINVAL;
-
-	base = devm_ioremap_resource(&pdev->dev, mem);
+	base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(base))
 		return PTR_ERR(base);

--
2.23.0