W dniu 27.02.2015 o 21:58, Felipe Balbi pisze:
Hi,
On Fri, Feb 27, 2015 at 02:55:25PM -0600, Felipe Balbi wrote:
On Mon, Feb 23, 2015 at 04:02:09PM +0100, Andrzej Pietrasiewicz wrote:
Non-standard requests can encode the actual interface number in a
non-standard way. For example composite_setup() assumes
that it is w_index && 0xFF, but the printer function encodes the interface
number in a context-dependet way (either w_index or w_index >> 8).
This can lead to such requests being directed to wrong functions.
This patch adds req_match() method to usb_function. Its purpose is to
verify that a given request can be handled by a given function.
If any function within a configuration provides the method and it returns
true, then it is assumed that the right function is found.
If a function uses req_match(), it should try as hard as possible to
determine if the request is meant for it.
If no functions in a configuration provide req_match or none of them
returns true, then fall back to the usual approach.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxx>
this regresses testusb at least on am335x:
I don't have this particular hardware but will try looking into the issue.
As soon as I have some results I will let you know.
AP
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