[MTD] m25p80.c mutex unlock fix

fix a mutex release bug in function m25p80_write.

Signed-off-by: Chen Gong <g.chen@freescale.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index 25efd33..b402269 100644 (file)
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -346,8 +346,10 @@ static int m25p80_write(struct mtd_info *mtd, loff_t to, size_t len,
        mutex_lock(&flash->lock);
 
        /* Wait until finished previous write command. */
-       if (wait_till_ready(flash))
+       if (wait_till_ready(flash)) {
+               mutex_unlock(&flash->lock);
                return 1;
+       }
 
        write_enable(flash);