From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:54773 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752671AbcI0G0l (ORCPT ); Tue, 27 Sep 2016 02:26:41 -0400 Subject: Patch "pwm: Mark all devices as "might sleep"" has been added to the 4.4-stable tree To: thierry.reding@gmail.com, gregkh@linuxfoundation.org, krzk@kernel.org Cc: , From: Date: Tue, 27 Sep 2016 08:26:45 +0200 Message-ID: <147495760525242@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled pwm: Mark all devices as "might sleep" to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: pwm-mark-all-devices-as-might-sleep.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From ff01c944cfa939f3474c28d88223213494aedf0b Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Thu, 21 Jan 2016 15:04:59 +0100 Subject: pwm: Mark all devices as "might sleep" From: Thierry Reding commit ff01c944cfa939f3474c28d88223213494aedf0b upstream. Commit d1cd21427747 ("pwm: Set enable state properly on failed call to enable") introduced a mutex that is needed to protect internal state of PWM devices. Since that mutex is acquired in pwm_set_polarity() and in pwm_enable() and might potentially block, all PWM devices effectively become "might sleep". It's rather pointless to keep the .can_sleep field around, but given that there are external users let's postpone the removal for the next release cycle. Signed-off-by: Thierry Reding Signed-off-by: Greg Kroah-Hartman Fixes: d1cd21427747 ("pwm: Set enable state properly on failed call to enable") Signed-off-by: Krzysztof Kozlowski --- drivers/pwm/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/pwm/core.c +++ b/drivers/pwm/core.c @@ -889,7 +889,7 @@ EXPORT_SYMBOL_GPL(devm_pwm_put); */ bool pwm_can_sleep(struct pwm_device *pwm) { - return pwm->chip->can_sleep; + return true; } EXPORT_SYMBOL_GPL(pwm_can_sleep); Patches currently in stable-queue which might be from thierry.reding@gmail.com are queue-4.4/pwm-mark-all-devices-as-might-sleep.patch