Use the new "kill_proc_info_as_uid()" for USB disconnect too

All the same issues - we can't just save the pointer to the thread, we
must save the pid/uid/euid combination.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>

3 files changed, 6 insertions, 3 deletions

diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index 6c35dcbea664..487ff672b104 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -530,7 +530,9 @@ static int usbdev_open(struct inode *inode, struct file *file)
         INIT_LIST_HEAD(&ps->async_completed);
         init_waitqueue_head(&ps->wait);
         ps->discsignr = 0;
-        ps->disctask = current;
+        ps->disc_pid = current->pid;
+        ps->disc_uid = current->uid;
+        ps->disc_euid = current->euid;
         ps->disccontext = NULL;
         ps->ifclaimed = 0;
         wmb();
diff --git a/drivers/usb/core/inode.c b/drivers/usb/core/inode.c
index 640f41e47029..d07bba01995b 100644
--- a/drivers/usb/core/inode.c
+++ b/drivers/usb/core/inode.c
@@ -713,7 +713,7 @@ void usbfs_remove_device(struct usb_device *dev)
                         sinfo.si_errno = EPIPE;
                         sinfo.si_code = SI_ASYNCIO;
                         sinfo.si_addr = ds->disccontext;
-                        send_sig_info(ds->discsignr, &sinfo, ds->disctask);
+                        kill_proc_info_as_uid(ds->discsignr, &sinfo, ds->disc_pid, ds->disc_uid, ds->disc_euid);
                 }
         }
         usbfs_update_special();
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
index 83d48c8133af..e6504f3370ad 100644
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -52,7 +52,8 @@ struct dev_state {
         struct list_head async_completed;
         wait_queue_head_t wait;     /* wake up if a request completed */
         unsigned int discsignr;
-        struct task_struct *disctask;
+        pid_t disc_pid;
+        uid_t disc_uid, disc_euid;
         void __user *disccontext;
         unsigned long ifclaimed;
 };