[PATCH] USB: bug fix in usbdevfs

I am sorry that the last patch about 32 bit compat ioctl on
64 bit kernel actually breaks the usbdevfs. That is on the current
BK tree. I am retarded. 

Here is the patch to fix it. Tested with USB hard disk and webcam
in both 32bit compatible mode and native 64bit mode.

Again, sorry about that.


From: Christopher Li <chrisl@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/core/devio.c

@@ -1032,8 +1032,7 @@ static int processcompl(struct async *as, void __user * __user *arg)
 	if (put_user(urb->error_count, &userurb->error_count))
 		return -EFAULT;
 
-	if (!(usb_pipeisoc(urb->pipe)))
-		return 0;
+	if (usb_pipeisoc(urb->pipe)) {
 		for (i = 0; i < urb->number_of_packets; i++) {
 			if (put_user(urb->iso_frame_desc[i].actual_length,
 				     &userurb->iso_frame_desc[i].actual_length))
@@ -1042,6 +1041,7 @@ static int processcompl(struct async *as, void __user * __user *arg)
 				     &userurb->iso_frame_desc[i].status))
 				return -EFAULT;
 		}
+	}
 
 	free_async(as);
 
@@ -1126,7 +1126,7 @@ static int proc_submiturb_compat(struct dev_state *ps, void __user *arg)
 	if (get_urb32(&uurb,(struct usbdevfs_urb32 *)arg))
 		return -EFAULT;
 
-	return proc_do_submiturb(ps, &uurb, ((struct usbdevfs_urb __user *)arg)->iso_frame_desc, arg);
+	return proc_do_submiturb(ps, &uurb, ((struct usbdevfs_urb32 __user *)arg)->iso_frame_desc, arg);
 }
 
 static int processcompl_compat(struct async *as, void __user * __user *arg)
@@ -1146,8 +1146,7 @@ static int processcompl_compat(struct async *as, void __user * __user *arg)
 	if (put_user(urb->error_count, &userurb->error_count))
 		return -EFAULT;
 
-	if (!(usb_pipeisoc(urb->pipe)))
-		return 0;
+	if (usb_pipeisoc(urb->pipe)) {
 		for (i = 0; i < urb->number_of_packets; i++) {
 			if (put_user(urb->iso_frame_desc[i].actual_length,
 				     &userurb->iso_frame_desc[i].actual_length))
@@ -1156,6 +1155,7 @@ static int processcompl_compat(struct async *as, void __user * __user *arg)
 				     &userurb->iso_frame_desc[i].status))
 				return -EFAULT;
 		}
+	}
 
 	free_async(as);
 	if (put_user((u32)(u64)addr, (u32 __user *)arg))
@@ -1177,10 +1177,8 @@ static int proc_reapurbnonblock_compat(struct dev_state *ps, void __user *arg)
 {
 	struct async *as;
 
-	printk("reapurbnblock\n");
 	if (!(as = async_getcompleted(ps)))
 		return -EAGAIN;
-	printk("reap got as %p\n", as);
 	return processcompl_compat(as, (void __user * __user *)arg);
 }