[PATCH] don't mess with file in scsi_nonblockable_ioctl()

Signed-off-by: Al Viro <[e-mail]>

drivers/scsi/scsi_ioctl.c

···
  * @filp: either NULL or a &struct file which must have the O_NONBLOCK flag.
  */
 int scsi_nonblockable_ioctl(struct scsi_device *sdev, int cmd,
-			    void __user *arg, struct file *filp)
+			    void __user *arg, int ndelay)
 {
 	int val, result;
 
 	/* The first set of iocts may be executed even if we're doing
 	 * error processing, as long as the device was opened
 	 * non-blocking */
-	if (filp && (filp->f_flags & O_NONBLOCK)) {
+	if (ndelay) {
 		if (scsi_host_in_recovery(sdev->host))
 			return -ENODEV;
 	} else if (!scsi_block_when_processing_errors(sdev))

drivers/scsi/sd.c

···
 	 * may try and take the device offline, in which case all further
 	 * access to the device is prohibited.
 	 */
-	error = scsi_nonblockable_ioctl(sdp, cmd, p, filp);
+	error = scsi_nonblockable_ioctl(sdp, cmd, p,
+					filp ? filp->f_flags & O_NDELAY : 0);
 	if (!scsi_block_when_processing_errors(sdp) || !error)
 		return error;
 

drivers/scsi/sr.c

···
 	 * case fall through to scsi_ioctl, which will return ENDOEV again
 	 * if it doesn't recognise the ioctl
 	 */
-	ret = scsi_nonblockable_ioctl(sdev, cmd, argp, NULL);
+	ret = scsi_nonblockable_ioctl(sdev, cmd, argp,
+					file ? file->f_flags & O_NDELAY : 0);
 	if (ret != -ENODEV)
 		return ret;
 	return scsi_ioctl(sdev, cmd, argp);

drivers/scsi/st.c

···
 	 * may try and take the device offline, in which case all further
 	 * access to the device is prohibited.
 	 */
-	retval = scsi_nonblockable_ioctl(STp->device, cmd_in, p, file);
+	retval = scsi_nonblockable_ioctl(STp->device, cmd_in, p,
+					file->f_flags & O_NDELAY);
 	if (!scsi_block_when_processing_errors(STp->device) || retval != -ENODEV)
 		goto out;
 	retval = 0;

include/scsi/scsi_ioctl.h

···
 
 extern int scsi_ioctl(struct scsi_device *, int, void __user *);
 extern int scsi_nonblockable_ioctl(struct scsi_device *sdev, int cmd,
-				   void __user *arg, struct file *filp);
+				   void __user *arg, int ndelay);
 
 #endif /* __KERNEL__ */
 #endif /* _SCSI_IOCTL_H */