linux-kernel - [PATCH v2 17/45] drivers: tty: serial: timuart: use devm

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Date:   Thu, 14 Mar 2019 23:33:47 +0100
From:   "Enrico Weigelt, metux IT consult" <info@...ux.net>
To:     linux-kernel@...r.kernel.org
Cc:     gregkh@...uxfoundation.org, eric@...olt.net,
        stefan.wahren@...e.com, f.fainelli@...il.com, rjui@...adcom.com,
        sbranden@...adcom.com, bcm-kernel-feedback-list@...adcom.com,
        andriy.shevchenko@...ux.intel.com, vz@...ia.com,
        matthias.bgg@...il.com, yamada.masahiro@...ionext.com,
        tklauser@...tanz.ch, richard.genoud@...il.com,
        macro@...ux-mips.org, u.kleine-koenig@...gutronix.de,
        kernel@...gutronix.de, slemieux.tyco@...il.com,
        andy.gross@...aro.org, david.brown@...aro.org, shawnguo@...nel.org,
        s.hauer@...gutronix.de, festevam@...il.com, linux-imx@....com,
        baohua@...nel.org, jacmet@...site.dk, linux-serial@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH v2 17/45] drivers: tty: serial: timuart: use devm_* functions

Use the safer devm versions of memory mapping functions.

Signed-off-by: Enrico Weigelt, metux IT consult <info@...ux.net>
---
 drivers/tty/serial/timbuart.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/tty/serial/timbuart.c b/drivers/tty/serial/timbuart.c
index 19d38b5..292354b 100644
--- a/drivers/tty/serial/timbuart.c
+++ b/drivers/tty/serial/timbuart.c
@@ -319,11 +319,11 @@ static void timbuart_release_port(struct uart_port *port)
 		resource_size(platform_get_resource(pdev, IORESOURCE_MEM, 0));
 
 	if (port->flags & UPF_IOREMAP) {
-		iounmap(port->membase);
+		devm_iounmap(port->dev, port->membase);
 		port->membase = NULL;
 	}
 
-	release_mem_region(port->mapbase, size);
+	devm_release_mem_region(port->dev, port->mapbase, size);
 }
 
 static int timbuart_request_port(struct uart_port *port)
@@ -332,13 +332,18 @@ static int timbuart_request_port(struct uart_port *port)
 	int size =
 		resource_size(platform_get_resource(pdev, IORESOURCE_MEM, 0));
 
-	if (!request_mem_region(port->mapbase, size, "timb-uart"))
+	if (!devm_request_mem_region(port->dev,
+				     port->mapbase,
+				     size,
+				     "timb-uart"))
 		return -EBUSY;
 
 	if (port->flags & UPF_IOREMAP) {
 		port->membase = ioremap(port->mapbase, size);
 		if (port->membase == NULL) {
-			release_mem_region(port->mapbase, size);
+			devm-release_mem_region(port->dev,
+						port->mapbase,
+						size);
 			return -ENOMEM;
 		}
 	}
-- 
1.9.1