linux-kernel - [PATCH v2 36/45] drivers: tty: serial: pic32_uart: use devm

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Date:   Thu, 14 Mar 2019 23:34:06 +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 36/45] drivers: tty: serial: pic32_uart: 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/pic32_uart.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/tty/serial/pic32_uart.c b/drivers/tty/serial/pic32_uart.c
index 0bdf168..b4f0b29 100644
--- a/drivers/tty/serial/pic32_uart.c
+++ b/drivers/tty/serial/pic32_uart.c
@@ -614,15 +614,19 @@ static int pic32_uart_request_port(struct uart_port *port)
 	if (unlikely(!res_mem))
 		return -EINVAL;
 
-	if (!request_mem_region(port->mapbase, resource_size(res_mem),
-				"pic32_uart_mem"))
+	if (!devm_request_mem_region(port->dev,
+				     port->mapbase,
+				     resource_size(res_mem),
+				     "pic32_uart_mem"))
 		return -EBUSY;
 
 	port->membase = devm_ioremap_nocache(port->dev, port->mapbase,
 						resource_size(res_mem));
 	if (!port->membase) {
 		dev_err(port->dev, "Unable to map registers\n");
-		release_mem_region(port->mapbase, resource_size(res_mem));
+		devm_release_mem_region(port->dev,
+					port->mapbase,
+					resource_size(res_mem));
 		return -ENOMEM;
 	}
 
@@ -641,7 +645,7 @@ static void pic32_uart_release_port(struct uart_port *port)
 		return;
 	res_size = resource_size(res_mem);
 
-	release_mem_region(port->mapbase, res_size);
+	devm_release_mem_region(port->dev, port->mapbase, res_size);
 }
 
 /* serial core request to do any port required auto-configuration */
-- 
1.9.1