tree 200fb998fe94b9ccd93d07c59656b8f5ab62c5d7
parent 9a4768d849d28a79566aa37de19b9852d2da8ec4
author Rafael J. Wysocki <rjw@sisk.pl> 1332970185 +0200
committer Rafael J. Wysocki <rjw@sisk.pl> 1332970185 +0200

firmware_class: Rework usermodehelper check

Instead of two functions, read_lock_usermodehelper() and
usermodehelper_is_disabled(), used in combination, introduce
usermodehelper_read_trylock() that will only return with umhelper_sem
held if usermodehelper_disabled is unset (and will return -EAGAIN
otherwise) and make _request_firmware() use it.

Rename read_unlock_usermodehelper() to
usermodehelper_read_unlock() to follow the naming convention of the
new function.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: stable@vger.kernel.org