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>

diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index e86f629..0d5cbf2 100644 (file)
--- 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;