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Date: Thu, 16 Apr 2020 13:37:01 +0200 From: Linus Walleij <linus.walleij@...aro.org> To: Bartosz Golaszewski <brgl@...ev.pl> Cc: "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Bartosz Golaszewski <bgolaszewski@...libre.com> Subject: Re: [PATCH] gpiolib: improve the robustness of watch/unwatch ioctl() On Wed, Apr 15, 2020 at 10:24 AM Bartosz Golaszewski <brgl@...ev.pl> wrote: > From: Bartosz Golaszewski <bgolaszewski@...libre.com> > > This makes the new ioctl() a bit more robust - we now check if a line > is already being watched and return -EBUSY if the user-space tries to > start watching it again. Same for unwatch - return -EBUSY if user-space > tries to unwatch a line that's not being watched. > > Fixes: 51c1064e82e7 ("gpiolib: add new ioctl() for monitoring changes in line info") > Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com> Reviewed-by: Linus Walleij <linus.walleij@...aro.org> I expect that you send me a pull request with some GPIO fixes when you feel you have some stuff including this I should send upstream, thanks! Yours, Linus Walleij
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