[lkml]   [2017]   [Aug]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] gpiolib: skip unwanted events, don't convert them to opposite edge
On Mon, Jul 3, 2017 at 11:12 AM, Bartosz Golaszewski <> wrote:

> The previous fix for filtering out of unwatched events was not entirely
> correct. Instead of skipping the events we don't want, they are now
> interpreted as events with opposing edge.
> In order to fix it: always read the GPIO line value on interrupt and
> only emit the event if it corresponds with the event type we requested.
> Fixes: ad537b822577 ("gpiolib: fix filtering out unwanted events")
> Signed-off-by: Bartosz Golaszewski <>
> ---
> Hi Linus,
> I tested my previous fix on a real board, where I got a storm of
> interrupts from simply playing with a GPIO manually. It looked ok so I
> posted the patch, but I didn't notice that when waiting for rising-edge
> events, all falling-edge events got interpreted as such. This patch
> should actually fix this bug. Tested carefully with gpio-mockup this
> time.

Patrch applied for fixes and tagged for stable.

Linus Walleij

 \ /
  Last update: 2017-08-01 14:09    [W:0.055 / U:4.020 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site