[PATCH] fix ide-tape oops

Set filp->private_data in idetape_chrdev_open() to point to a opened drive,
otherwise driver oopses during future access to tape character device.

Thanks to Stef van der Made <svdmade@planet.nl> for testing ide-tape fixes.

drivers/ide/ide-tape.c

@@ -5581,6 +5581,7 @@ static int idetape_chrdev_open (struct inode *inode, struct file *filp)
 		return -ENXIO;
 	drive = idetape_chrdevs[i].drive;
 	tape = drive->driver_data;
+	filp->private_data = drive;
 
 	if (test_and_set_bit(IDETAPE_BUSY, &tape->flags))
 		return -EBUSY;