tree c3eaf999be40610dcc7804d3d9311cc78628ace4
parent 2a09bcb0c25258b2fdffb2873ee62781c3d69ee0
author Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1639507581 +0100
committer Greg Kroah-Hartman <gregkh@google.com> 1639599904 +0100

FROMGIT: USB: gadget: bRequestType is a bitfield, not a enum

Szymon rightly pointed out that the previous check for the endpoint
direction in bRequestType was not looking at only the bit involved, but
rather the whole value.  Normally this is ok, but for some request
types, bits other than bit 8 could be set and the check for the endpoint
length could not stall correctly.

Fix that up by only checking the single bit.

Fixes: 153a2d7e3350 ("USB: gadget: detect too-big endpoint 0 requests")
Cc: Felipe Balbi <balbi@kernel.org>
Reported-by: Szymon Heidrich <szymon.heidrich@gmail.com>
Link: https://lore.kernel.org/r/20211214184621.385828-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit f08adf5add9a071160c68bb2a61d697f39ab0758
 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-linus)
Bug: 210292376
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I7e708b2b94433009c87f697346e0515d93454f48