[PATCH v2 10/45] drivers: tty: serial: zs: use devm_* functions

[Enrico Weigelt, metux IT consult]

Use the safer devm versions of memory mapping functions.

Signed-off-by: Enrico Weigelt, metux IT consult <i...@metux.net>
---
 drivers/tty/serial/zs.c | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/drivers/tty/serial/zs.c b/drivers/tty/serial/zs.c
index b03d3e4..0b1ec2f 100644
--- a/drivers/tty/serial/zs.c
+++ b/drivers/tty/serial/zs.c
@@ -984,16 +984,17 @@ static const char *zs_type(struct uart_port *uport)
 
 static void zs_release_port(struct uart_port *uport)
 {
-       iounmap(uport->membase);
+       devm_iounmap(uport->dev, uport->membase);
        uport->membase = 0;
-       release_mem_region(uport->mapbase, ZS_CHAN_IO_SIZE);
+       devm_release_mem_region(uport->dev, uport->mapbase, ZS_CHAN_IO_SIZE);
 }
 
 static int zs_map_port(struct uart_port *uport)
 {
        if (!uport->membase)
-               uport->membase = ioremap_nocache(uport->mapbase,
-                                                ZS_CHAN_IO_SIZE);
+               uport->membase = devm_ioremap_nocache(uport->dev,
+                                                     uport->mapbase,
+                                                     ZS_CHAN_IO_SIZE);
        if (!uport->membase) {
                printk(KERN_ERR "zs: Cannot map MMIO\n");
                return -ENOMEM;
@@ -1005,13 +1006,16 @@ static int zs_request_port(struct uart_port *uport)
 {
        int ret;
 
-       if (!request_mem_region(uport->mapbase, ZS_CHAN_IO_SIZE, "scc")) {
+       if (!devm_request_mem_region(uport->mapbase,
+                                    ZS_CHAN_IO_SIZE, "scc")) {
                printk(KERN_ERR "zs: Unable to reserve MMIO resource\n");
                return -EBUSY;
        }
        ret = zs_map_port(uport);
        if (ret) {
-               release_mem_region(uport->mapbase, ZS_CHAN_IO_SIZE);
+               devm_release_mem_region(uport-dev,
+                                       uport->mapbase,
+                                       ZS_CHAN_IO_SIZE);
                return ret;
        }
        return 0;
-- 
1.9.1