[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>

diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index a047bc3..923e518 100644 (file)
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -1032,15 +1032,15 @@ 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;
-       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))
-                       return -EFAULT;
-               if (put_user(urb->iso_frame_desc[i].status,
-                            &userurb->iso_frame_desc[i].status))
-                       return -EFAULT;
+       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))
+                               return -EFAULT;
+                       if (put_user(urb->iso_frame_desc[i].status,
+                                    &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)
@@ -1146,15 +1146,15 @@ 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;
-       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))
-                       return -EFAULT;
-               if (put_user(urb->iso_frame_desc[i].status,
-                            &userurb->iso_frame_desc[i].status))
-                       return -EFAULT;
+       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))
+                               return -EFAULT;
+                       if (put_user(urb->iso_frame_desc[i].status,
+                                    &userurb->iso_frame_desc[i].status))
+                               return -EFAULT;
+               }
        }
 
        free_async(as);
@@ -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);
 }