linux-kernel - [PATCH v2 16/45] drivers: tty: serial: uartlite: use devm

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Message-Id: <1552602855-26086-17-git-send-email-info@metux.net>
Date:   Thu, 14 Mar 2019 23:33:46 +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 16/45] drivers: tty: serial: uartlite: 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/uartlite.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/drivers/tty/serial/uartlite.c b/drivers/tty/serial/uartlite.c
index aa461b8..f068d00 100644
--- a/drivers/tty/serial/uartlite.c
+++ b/drivers/tty/serial/uartlite.c
@@ -342,8 +342,8 @@ static const char *ulite_type(struct uart_port *port)
 
 static void ulite_release_port(struct uart_port *port)
 {
-	release_mem_region(port->mapbase, ULITE_REGION);
-	iounmap(port->membase);
+	devm_release_mem_region(port->dev, port->mapbase, ULITE_REGION);
+	devm_iounmap(port->dev, port->membase);
 	port->membase = NULL;
 }
 
@@ -355,15 +355,20 @@ static int ulite_request_port(struct uart_port *port)
 	dev_dbg(port->dev, "ulite console: port=%p; port->mapbase=%llx\n",
 		 port, (unsigned long long) port->mapbase);
 
-	if (!request_mem_region(port->mapbase, ULITE_REGION, "uartlite")) {
+	if (!devm_request_mem_region(port->dev,
+				     port->mapbase,
+				     ULITE_REGION,
+				     "uartlite")) {
 		dev_err(port->dev, "Memory region busy\n");
 		return -EBUSY;
 	}
 
-	port->membase = ioremap(port->mapbase, ULITE_REGION);
+	port->membase = devm_ioremap(port->dev, port->mapbase, ULITE_REGION);
 	if (!port->membase) {
 		dev_err(port->dev, "Unable to map registers\n");
-		release_mem_region(port->mapbase, ULITE_REGION);
+		devm_release_mem_region(port->dev,
+					port->mapbase,
+					ULITE_REGION);
 		return -EBUSY;
 	}
 
-- 
1.9.1