usb:fix disconnect vs. open race in rio500
On SMP disconnect and open can race. Fix it with BKL, as this
was caused by removing BKL in disconnect().
Signed-off-by: Oliver Neukum <oliver@xxxxxxxxxx>
--
--- a/drivers/usb/misc/rio500.c.alt 2010-01-14 17:11:42.344005497 +0100
+++ b/drivers/usb/misc/rio500.c 2010-01-14 17:12:37.116881581 +0100
@@ -490,6 +490,7 @@ static void disconnect_rio(struct usb_in
struct rio_usb_data *rio = usb_get_intfdata (intf);
usb_set_intfdata (intf, NULL);
+ lock_kernel();
if (rio) {
usb_deregister_dev(intf, &usb_rio_class);
@@ -509,6 +510,7 @@ static void disconnect_rio(struct usb_in
rio->present = 0;
mutex_unlock(&(rio->lock));
}
+ unlock_kernel();
}
static struct usb_device_id rio_table [] = {
--
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