[ Upstream commit 3e4d9a4850 ]
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>
Fix warnings reported by sparse, related to type mismatch between u16
and __le16.
Reported-by: kernel test robot <lkp@intel.com>
Fixes: 3a29355a22 ("gpio: Add virtio-gpio driver")
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
This patch adds a new driver for Virtio based GPIO devices.
This allows a guest VM running Linux to access GPIO lines provided by
the host. It supports all basic operations, except interrupts for the
GPIO lines.
Based on the initial work posted by:
"Enrico Weigelt, metux IT consult" <lkml@metux.net>.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
