[PATCH] net: phy: allow for reset line to be tied to a sleepy GPIO controller

[Andrea Merello]

mdio_device_reset() makes use of the atomic-pretending API flavor for
handling the PHY reset GPIO line.

I found no hint that mdio_device_reset() is called from atomic context
and indeed it uses usleep_range() since long time, so I would assume that
it is OK to sleep there.

This patch switch to gpiod_set_value_cansleep() in mdio_device_reset().
This is relevant if e.g. the PHY reset line is tied to a I2C GPIO
controller.

This has been tested on a ZynqMP board running an upstream 4.19 kernel and
then hand-ported on current kernel tree.

Signed-off-by: Andrea Merello <andrea.mere...@gmail.com>
---
 drivers/net/phy/mdio_device.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/phy/mdio_device.c b/drivers/net/phy/mdio_device.c
index e282600bd83e..c1d345c3cab3 100644
--- a/drivers/net/phy/mdio_device.c
+++ b/drivers/net/phy/mdio_device.c
@@ -121,7 +121,7 @@ void mdio_device_reset(struct mdio_device *mdiodev, int 
value)
                return;
 
        if (mdiodev->reset_gpio)
-               gpiod_set_value(mdiodev->reset_gpio, value);
+               gpiod_set_value_cansleep(mdiodev->reset_gpio, value);
 
        if (mdiodev->reset_ctrl) {
                if (value)
-- 
2.17.1