Patchwork [v2,40/45] drivers: tty: serial: mpc52xx_uart: use devm_* functions

login
register
mail settings
Submitter Enrico Weigelt, metux IT consult
Date March 14, 2019, 10:34 p.m.
Message ID <1552602855-26086-41-git-send-email-info@metux.net>
Download mbox | patch
Permalink /patch/749111/
State New
Headers show

Comments

Enrico Weigelt, metux IT consult - March 14, 2019, 10:34 p.m.
Use the safer devm versions of memory mapping functions.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
---
 drivers/tty/serial/mpc52xx_uart.c | 21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

Patch

diff --git a/drivers/tty/serial/mpc52xx_uart.c b/drivers/tty/serial/mpc52xx_uart.c
index 3a75ee0..3e74e44 100644
--- a/drivers/tty/serial/mpc52xx_uart.c
+++ b/drivers/tty/serial/mpc52xx_uart.c
@@ -1276,11 +1276,13 @@  static u8 mpc5125_psc_get_mr1(struct uart_port *port)
 
 	/* remapped by us ? */
 	if (port->flags & UPF_IOREMAP) {
-		iounmap(port->membase);
+		devm_iounmap(port->dev, port->membase);
 		port->membase = NULL;
 	}
 
-	release_mem_region(port->mapbase, sizeof(struct mpc52xx_psc));
+	devm_release_mem_region(port->dev,
+				port->mapbase,
+				sizeof(struct mpc52xx_psc));
 }
 
 static int
@@ -1289,13 +1291,14 @@  static u8 mpc5125_psc_get_mr1(struct uart_port *port)
 	int err;
 
 	if (port->flags & UPF_IOREMAP) /* Need to remap ? */
-		port->membase = ioremap(port->mapbase,
+		port->membase = devm_ioremap(port->dev, port->mapbase,
 					sizeof(struct mpc52xx_psc));
 
 	if (!port->membase)
 		return -EINVAL;
 
-	err = request_mem_region(port->mapbase, sizeof(struct mpc52xx_psc),
+	err = devm_request_mem_region(port->mapbase,
+			sizeof(struct mpc52xx_psc),
 			"mpc52xx_psc_uart") != NULL ? 0 : -EBUSY;
 
 	if (err)
@@ -1310,10 +1313,12 @@  static u8 mpc5125_psc_get_mr1(struct uart_port *port)
 	return 0;
 
 out_mapregion:
-	release_mem_region(port->mapbase, sizeof(struct mpc52xx_psc));
+	devm_release_mem_region(port->dev,
+				port->mapbase,
+				sizeof(struct mpc52xx_psc));
 out_membase:
 	if (port->flags & UPF_IOREMAP) {
-		iounmap(port->membase);
+		devm_iounmap(port->dev, port->membase);
 		port->membase = NULL;
 	}
 	return err;
@@ -1653,7 +1658,9 @@  static u8 mpc5125_psc_get_mr1(struct uart_port *port)
 	port->uartclk = uartclk;
 	port->ops	= &mpc52xx_uart_ops;
 	port->mapbase = res.start;
-	port->membase = ioremap(res.start, sizeof(struct mpc52xx_psc));
+	port->membase = devm_ioremap(port->dev,
+				     res.start,
+				     sizeof(struct mpc52xx_psc));
 	port->irq = irq_of_parse_and_map(np, 0);
 
 	if (port->membase == NULL)