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gpio: virtio: remove timeout 

[ Upstream commit 3e4d9a485029aa9e172dab5420abe775fd86f8e8 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Vincent Whitchurch 2021-12-20 14:06:56 +01:00 committed by Greg Kroah-Hartman
parent 6b3f7e4b10
commit 1f0d95fb37
1 changed files with 1 additions and 5 deletions
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6
drivers/gpio/gpio-virtio.c
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@ -81,11 +81,7 @@ 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);