From: Bartosz Golaszewski <brgl@bgdev.pl>
To: Vincent Whitchurch <vincent.whitchurch@axis.com>
Cc: "Enrico Weigelt, metux IT consult" <info@metux.net>,
Viresh Kumar <vireshk@kernel.org>,
Linus Walleij <linus.walleij@linaro.org>,
kernel@axis.com, "Michael S . Tsirkin" <mst@redhat.com>,
Bartosz Golaszewski <bgolaszewski@baylibre.com>,
Viresh Kumar <viresh.kumar@linaro.org>,
"open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>,
virtualization@lists.linux-foundation.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] gpio: virtio: remove timeout
Date: Tue, 21 Dec 2021 16:23:19 +0100 [thread overview]
Message-ID: <CAMRc=Mcdo9WWX7U=AqwTite=JDEkoSCb-Lwwb+h_=vSFrKMmnQ@mail.gmail.com> (raw)
In-Reply-To: <20211220130656.16900-1-vincent.whitchurch@axis.com>
On Mon, Dec 20, 2021 at 2:07 PM Vincent Whitchurch
<vincent.whitchurch@axis.com> wrote:
>
> The driver imposes an arbitrary one second timeout on virtio requests,
> but the specification doesn't prevent the virtio device from taking
> longer to process requests, so remove this timeout to support all
> systems and device implementations.
>
> Fixes: 3a29355a22c0275fe86 ("gpio: Add virtio-gpio driver")
> Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
> ---
> drivers/gpio/gpio-virtio.c | 6 +-----
> 1 file changed, 1 insertion(+), 5 deletions(-)
>
> diff --git a/drivers/gpio/gpio-virtio.c b/drivers/gpio/gpio-virtio.c
> index 84f96b78f32a..9f4941bc5760 100644
> --- a/drivers/gpio/gpio-virtio.c
> +++ b/drivers/gpio/gpio-virtio.c
> @@ -100,11 +100,7 @@ static int _virtio_gpio_req(struct virtio_gpio *vgpio, u16 type, u16 gpio,
> virtqueue_kick(vgpio->request_vq);
> mutex_unlock(&vgpio->lock);
>
> - if (!wait_for_completion_timeout(&line->completion, HZ)) {
> - dev_err(dev, "GPIO operation timed out\n");
> - ret = -ETIMEDOUT;
> - goto out;
> - }
> + wait_for_completion(&line->completion);
>
> if (unlikely(res->status != VIRTIO_GPIO_STATUS_OK)) {
> dev_err(dev, "GPIO request failed: %d\n", gpio);
> --
> 2.33.1
>
Applied, thanks!
Bart
prev parent reply other threads:[~2021-12-21 15:23 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-20 13:06 [PATCH] gpio: virtio: remove timeout Vincent Whitchurch
2021-12-20 13:06 ` Vincent Whitchurch
2021-12-20 14:54 ` Bartosz Golaszewski
2021-12-20 15:35 ` Michael S. Tsirkin
2021-12-20 15:35 ` Michael S. Tsirkin
2021-12-20 15:35 ` Michael S. Tsirkin
2021-12-20 15:35 ` Michael S. Tsirkin
2021-12-21 4:26 ` Viresh Kumar
2021-12-21 4:26 ` Viresh Kumar
2021-12-21 15:23 ` Bartosz Golaszewski [this message]
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