From: Rafael J. Wysocki <rjw@sisk.pl>
Date: Wed, 28 Mar 2012 21:29:45 +0000 (+0200)
Subject: firmware_class: Rework usermodehelper check
X-Git-Tag: v3.4-rc2~19^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fe2e39d8782d885755139304d8dba0b3e5bfa878;p=pandora-kernel.git

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
---

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