From: Linus Walleij <linus.walleij@linaro.org>
To: Bartosz Golaszewski <brgl@bgdev.pl>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Kent Gibson <warthog618@gmail.com>,
linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org,
Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Subject: Re: [PATCH v2 0/6] gpio: cdev: bail out of poll() if the device goes down
Date: Fri, 18 Aug 2023 09:20:16 +0200 [thread overview]
Message-ID: <CACRpkdafsASGZCK24waSix8xwzWTrNyTCkxDu4phx7q-9KtLdw@mail.gmail.com> (raw)
In-Reply-To: <20230817184958.25349-1-brgl@bgdev.pl>
On Thu, Aug 17, 2023 at 8:50 PM Bartosz Golaszewski <brgl@bgdev.pl> wrote:
> From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
>
> Wake up all three wake queues (the one associated with the character
> device file, the one for V1 line events and the V2 line request one)
> when the underlying GPIO device is unregistered. This way we won't get
> stuck in poll() after the chip is gone as user-space will be forced to
> go back into a new system call and will see that gdev->chip is NULL.
>
> v1 -> v2:
> - not much is left from v1, this time we don't repurpose the existing
> gpio_device notifier but add a new one so that cdev structures don't
> get unwanted events
This is nice, thanks for quick respin!
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Yours,
Linus Walleij
next prev parent reply other threads:[~2023-08-18 7:21 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-17 18:49 [PATCH v2 0/6] gpio: cdev: bail out of poll() if the device goes down Bartosz Golaszewski
2023-08-17 18:49 ` [PATCH v2 1/6] gpiolib: rename the gpio_device notifier Bartosz Golaszewski
2023-08-17 18:49 ` [PATCH v2 2/6] gpio: cdev: open-code to_gpio_chardev_data() Bartosz Golaszewski
2023-08-18 10:28 ` Andy Shevchenko
2023-08-17 18:49 ` [PATCH v2 3/6] gpiolib: add a second blocking notifier to struct gpio_device Bartosz Golaszewski
2023-08-17 18:49 ` [PATCH v2 4/6] gpio: cdev: wake up chardev poll() on device unbind Bartosz Golaszewski
2023-08-18 10:30 ` Andy Shevchenko
2023-08-21 12:43 ` Bartosz Golaszewski
2023-08-21 13:03 ` Bartosz Golaszewski
2023-08-21 13:34 ` Bartosz Golaszewski
2023-08-17 18:49 ` [PATCH v2 5/6] gpio: cdev: wake up linereq " Bartosz Golaszewski
2023-08-17 18:49 ` [PATCH v2 6/6] gpio: cdev: wake up lineevent " Bartosz Golaszewski
2023-08-18 0:16 ` [PATCH v2 0/6] gpio: cdev: bail out of poll() if the device goes down Kent Gibson
2023-08-18 7:20 ` Linus Walleij [this message]
2023-08-18 10:34 ` Andy Shevchenko
2023-08-18 12:06 ` Bartosz Golaszewski
2023-08-18 13:29 ` Andy Shevchenko
2023-08-18 13:36 ` Bartosz Golaszewski
2023-08-18 19:16 ` Bartosz Golaszewski
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