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gpio: virtio: remove timeout

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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: 3a29355a22 ("gpio: Add virtio-gpio driver")
Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
This commit is contained in:
Vincent Whitchurch 2021-12-20 14:06:56 +01:00 committed by Bartosz Golaszewski
parent 9a5875f14b
commit 3e4d9a4850
1 changed files with 1 additions and 5 deletions
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6
drivers/gpio/gpio-virtio.c
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@ -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);