[PATCH] sparse: scsi ->ioctl() annotation

Low-level drivers' ->ioctl() gets a userland pointer from scsi_ioctl();
prototype annotated, so is scsi_debug instance.

drivers/scsi/scsi_debug.c

@@ -484,7 +484,7 @@ int scsi_debug_queuecommand(struct scsi_cmnd * SCpnt, done_funct_t done)
 	return schedule_resp(SCpnt, devip, done, errsts, scsi_debug_delay);
 }
 
-static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void *arg)
+static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg)
 {
 	if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) {
 		printk(KERN_INFO "scsi_debug: ioctl: cmd=0x%x\n", cmd);

drivers/scsi/scsi_debug.h

@@ -7,7 +7,7 @@ static int scsi_debug_slave_configure(struct scsi_device *);
 static void scsi_debug_slave_destroy(struct scsi_device *);
 static int scsi_debug_queuecommand(struct scsi_cmnd *,
 				   void (*done) (struct scsi_cmnd *));
-static int scsi_debug_ioctl(struct scsi_device *, int, void *);
+static int scsi_debug_ioctl(struct scsi_device *, int, void __user *);
 static int scsi_debug_biosparam(struct scsi_device *, struct block_device *,
 		sector_t, int[]);
 static int scsi_debug_abort(struct scsi_cmnd *);

include/scsi/scsi_host.h

@@ -64,7 +64,7 @@ struct scsi_host_template {
 	 *
 	 * Status: OPTIONAL
 	 */
-	int (* ioctl)(struct scsi_device *dev, int cmd, void *arg);
+	int (* ioctl)(struct scsi_device *dev, int cmd, void __user *arg);
 	
 	/*
 	 * The queuecommand function is used to queue up a scsi