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path: root/drivers/usb/gadget/printer.c
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Diffstat (limited to 'drivers/usb/gadget/printer.c')
-rw-r--r--drivers/usb/gadget/printer.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/usb/gadget/printer.c b/drivers/usb/gadget/printer.c
index 271ef94668e..978e6a101bf 100644
--- a/drivers/usb/gadget/printer.c
+++ b/drivers/usb/gadget/printer.c
@@ -795,12 +795,14 @@ printer_write(struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
}
static int
-printer_fsync(struct file *fd, int datasync)
+printer_fsync(struct file *fd, loff_t start, loff_t end, int datasync)
{
struct printer_dev *dev = fd->private_data;
+ struct inode *inode = fd->f_path.dentry->d_inode;
unsigned long flags;
int tx_list_empty;
+ mutex_lock(&inode->i_mutex);
spin_lock_irqsave(&dev->lock, flags);
tx_list_empty = (likely(list_empty(&dev->tx_reqs)));
spin_unlock_irqrestore(&dev->lock, flags);
@@ -810,6 +812,7 @@ printer_fsync(struct file *fd, int datasync)
wait_event_interruptible(dev->tx_flush_wait,
(likely(list_empty(&dev->tx_reqs_active))));
}
+ mutex_unlock(&inode->i_mutex);
return 0;
}