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

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Message-Id: <1552602855-26086-46-git-send-email-info@metux.net>
Date:   Thu, 14 Mar 2019 23:34:15 +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 45/45] drivers: tty: serial: mux: 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/mux.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/drivers/tty/serial/mux.c b/drivers/tty/serial/mux.c
index 00ce31e..cd08f0f 100644
--- a/drivers/tty/serial/mux.c
+++ b/drivers/tty/serial/mux.c
@@ -456,8 +456,9 @@ static int __init mux_probe(struct parisc_device *dev)
 	printk(KERN_INFO "Serial mux driver (%d ports) Revision: 0.6\n", port_count);
 
 	dev_set_drvdata(&dev->dev, (void *)(long)port_count);
-	request_mem_region(dev->hpa.start + MUX_OFFSET,
-                           port_count * MUX_LINE_OFFSET, "Mux");
+	devm_request_mem_region(&dev->dev,
+				dev->hpa.start + MUX_OFFSET,
+				port_count * MUX_LINE_OFFSET, "Mux");
 
 	if(!port_cnt) {
 		mux_driver.cons = MUX_CONSOLE;
@@ -474,7 +475,9 @@ static int __init mux_probe(struct parisc_device *dev)
 		port->iobase	= 0;
 		port->mapbase	= dev->hpa.start + MUX_OFFSET +
 						(i * MUX_LINE_OFFSET);
-		port->membase	= ioremap_nocache(port->mapbase, MUX_LINE_OFFSET);
+		port->membase	= devm_ioremap_nocache(port->dev,
+						       port->mapbase,
+						       MUX_LINE_OFFSET);
 		port->iotype	= UPIO_MEM;
 		port->type	= PORT_MUX;
 		port->irq	= 0;
@@ -517,10 +520,12 @@ static int __exit mux_remove(struct parisc_device *dev)
 
 		uart_remove_one_port(&mux_driver, port);
 		if(port->membase)
-			iounmap(port->membase);
+			devm_iounmap(port->dev, port->membase);
 	}
 
-	release_mem_region(dev->hpa.start + MUX_OFFSET, port_count * MUX_LINE_OFFSET);
+	devm_release_mem_region(&dev->dev,
+				dev->hpa.start + MUX_OFFSET,
+				port_count * MUX_LINE_OFFSET);
 	return 0;
 }
 
-- 
1.9.1