From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:38948 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752737AbdGCH6k (ORCPT ); Mon, 3 Jul 2017 03:58:40 -0400 Subject: Patch "gpiolib: fix filtering out unwanted events" has been added to the 4.9-stable tree To: brgl@bgdev.pl, gregkh@linuxfoundation.org, linus.walleij@linaro.org Cc: , From: Date: Mon, 03 Jul 2017 09:58:38 +0200 Message-ID: <14990687188835@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 gpiolib: fix filtering out unwanted events to the 4.9-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: gpiolib-fix-filtering-out-unwanted-events.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From ad537b822577fcc143325786cd6ad50d7b9df31c Mon Sep 17 00:00:00 2001 From: Bartosz Golaszewski Date: Fri, 23 Jun 2017 13:45:16 +0200 Subject: gpiolib: fix filtering out unwanted events From: Bartosz Golaszewski commit ad537b822577fcc143325786cd6ad50d7b9df31c upstream. GPIOEVENT_REQUEST_BOTH_EDGES is not a single flag, but a binary OR of GPIOEVENT_REQUEST_RISING_EDGE and GPIOEVENT_REQUEST_FALLING_EDGE. The expression 'le->eflags & GPIOEVENT_REQUEST_BOTH_EDGES' we'll get evaluated to true even if only one event type was requested. Fix it by checking both RISING & FALLING flags explicitly. Fixes: 61f922db7221 ("gpio: userspace ABI for reading GPIO line events") Signed-off-by: Bartosz Golaszewski Signed-off-by: Linus Walleij Signed-off-by: Greg Kroah-Hartman --- drivers/gpio/gpiolib.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -707,7 +707,8 @@ static irqreturn_t lineevent_irq_thread( ge.timestamp = ktime_get_real_ns(); - if (le->eflags & GPIOEVENT_REQUEST_BOTH_EDGES) { + if (le->eflags & GPIOEVENT_REQUEST_RISING_EDGE + && le->eflags & GPIOEVENT_REQUEST_FALLING_EDGE) { int level = gpiod_get_value_cansleep(le->desc); if (level) Patches currently in stable-queue which might be from brgl@bgdev.pl are queue-4.9/gpiolib-fix-filtering-out-unwanted-events.patch