1 files changed, 7 insertions, 2 deletions

diff --git a/drivers/char/ps3flash.c b/drivers/char/ps3flash.c
index 5a06787e5be3..d0c57c2e2909 100644
--- a/drivers/char/ps3flash.c
+++ b/drivers/char/ps3flash.c
@@ -309,9 +309,14 @@ static int ps3flash_flush(struct file *file, fl_owner_t id)
         return ps3flash_writeback(ps3flash_dev);
 }
 
-static int ps3flash_fsync(struct file *file, int datasync)
+static int ps3flash_fsync(struct file *file, loff_t start, loff_t end, int datasync)
 {
-        return ps3flash_writeback(ps3flash_dev);
+        struct inode *inode = file->f_path.dentry->d_inode;
+        int err;
+        mutex_lock(&inode->i_mutex);
+        err = ps3flash_writeback(ps3flash_dev);
+        mutex_unlock(&inode->i_mutex);
+        return err;
 }
 
 static irqreturn_t ps3flash_interrupt(int irq, void *data)