tree 0d040b4d87cb69ac6b6d10c260aaef42f9584602
parent c67c2ed829f3854c1df95ca53bbfdfc9c906d510
author Felipe Balbi <felipe.balbi@linux.intel.com> 1475048291 +0300
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1483697768 +0100

usb: gadget: composite: correctly initialize ep->maxpacket

commit e8f29bb719b47a234f33b0af62974d7a9521a52c upstream.

usb_endpoint_maxp() returns wMaxPacketSize in its
raw form. Without taking into consideration that it
also contains other bits reserved for isochronous
endpoints.

This patch fixes one occasion where this is a
problem by making sure that we initialize
ep->maxpacket only with lower 10 bits of the value
returned by usb_endpoint_maxp(). Note that seperate
patches will be necessary to audit all call sites of
usb_endpoint_maxp() and make sure that
usb_endpoint_maxp() only returns lower 10 bits of
wMaxPacketSize.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>