USB: Fix alignment of buffer passed down to ->hub_control()

Implementations assume the buffer is at least 4 byte aligned.

Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index e86f62957085..0d5cbf254e5e 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -345,7 +345,8 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb)
         struct usb_ctrlrequest *cmd;
         u16             typeReq, wValue, wIndex, wLength;
         u8              *ubuf = urb->transfer_buffer;
-        u8              tbuf [sizeof (struct usb_hub_descriptor)];
+        u8              tbuf [sizeof (struct usb_hub_descriptor)]
+                __attribute__((aligned(4)));
         const u8        *bufp = tbuf;
         int             len = 0;
         int             patch_wakeup = 0;