linux-kernel - [PATCH v2 20/45] drivers: tty: serial: msm_serial: use devm

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Date:   Thu, 14 Mar 2019 23:33:50 +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 20/45] drivers: tty: serial: msm_serial: 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/msm_serial.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c
index 1090960..e8e0c87 100644
--- a/drivers/tty/serial/msm_serial.c
+++ b/drivers/tty/serial/msm_serial.c
@@ -1324,8 +1324,8 @@ static void msm_release_port(struct uart_port *port)
 		return;
 	size = resource_size(uart_resource);
 
-	release_mem_region(port->mapbase, size);
-	iounmap(port->membase);
+	devm_release_mem_region(port->dev, port->mapbase, size);
+	devm_iounmap(port->dev, port->membase);
 	port->membase = NULL;
 }
 
@@ -1342,10 +1342,13 @@ static int msm_request_port(struct uart_port *port)
 
 	size = resource_size(uart_resource);
 
-	if (!request_mem_region(port->mapbase, size, "msm_serial"))
+	if (!devm_request_mem_region(port->dev,
+				     port->mapbase,
+				     size,
+				     "msm_serial"))
 		return -EBUSY;
 
-	port->membase = ioremap(port->mapbase, size);
+	port->membase = ioremap(port->dev, port->mapbase, size);
 	if (!port->membase) {
 		ret = -EBUSY;
 		goto fail_release_port;
@@ -1354,7 +1357,7 @@ static int msm_request_port(struct uart_port *port)
 	return 0;
 
 fail_release_port:
-	release_mem_region(port->mapbase, size);
+	devm_release_mem_region(port->dev, port->mapbase, size);
 	return ret;
 }
 
-- 
1.9.1