[MTD] Only call mtd->sync() method in mtdchar close if opened for write.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index 8c86b802f212..942c88ec5b6a 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -135,7 +135,8 @@ static int mtd_close(struct inode *inode, struct file *file)
 
         DEBUG(MTD_DEBUG_LEVEL0, "MTD_close\n");
 
-        if (mtd->sync)
+        /* Only sync if opened RW */
+        if ((file->f_mode & 2) && mtd->sync)
                 mtd->sync(mtd);
 
         put_mtd_device(mtd);