tree 762ae2c12f103f039a8215161172b0b52101c1c9
parent ce60c48871d2b3a15ab3fa2450e783bebb4ae407
author Oliver Neukum <oliver@neukum.org> 1252483968 +0200
committer Greg Kroah-Hartman <gregkh@suse.de> 1253713576 -0700

USB: CDC WDM driver doesn't support non-blocking reads

support for O_NONBLOCK in read and write path
by simply not waiting for data in read or availability
of the write urb in write but returning -EAGAIN

Signed-off-by: Oliver Neukum <oliver@neukum.org>
Tested-by: Marcel Holtmann <marcel@holtmann.org>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>