[PATCH] serial: mxs-auart: Use devm_ioremap() to fix the missing undo bug

[Chuhong Yuan]

This driver calls ioremap() in probe, but it misses calling iounmap() in 
probe's error handler and remove.
Replace ioremap() with the devm version to fix it.

Fixes: 47d37d6f94cc ("serial: Add auart driver for i.MX23/28")
Signed-off-by: Chuhong Yuan <hsleste...@gmail.com>
---
 drivers/tty/serial/mxs-auart.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c
index b4f835e7de23..b3e16fd72eaf 100644
--- a/drivers/tty/serial/mxs-auart.c
+++ b/drivers/tty/serial/mxs-auart.c
@@ -1679,7 +1679,7 @@ static int mxs_auart_probe(struct platform_device *pdev)
        }
 
        s->port.mapbase = r->start;
-       s->port.membase = ioremap(r->start, resource_size(r));
+       s->port.membase = devm_ioremap(&pdev->dev, r->start, resource_size(r));
        if (!s->port.membase) {
                ret = -ENOMEM;
                goto out_disable_clks;
-- 
2.26.2