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net: phy: mdio-gpio: Fix working over slow can_sleep GPIOs

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[ Upstream commit df5a8ec64e ]

Up until commit 7e5fbd1e07 ("net: mdio-gpio: Convert to use gpiod
functions where possible"), the _cansleep variants of the gpio_ API was
used. After that commit and the change to gpiod_ API, the _cansleep()
was dropped. This then results in WARN_ON() when used with GPIO
devices which do sleep. Add back the _cansleep() to avoid this.

Fixes: 7e5fbd1e07 ("net: mdio-gpio: Convert to use gpiod functions where possible")
Signed-off-by: Martin Schiller <ms@dev.tdt.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Martin Schiller 2018-11-16 08:38:36 +01:00 committed by Greg Kroah-Hartman
parent 56782f5353
commit fd2e5f8ae1
1 changed files with 5 additions and 5 deletions
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10
drivers/net/phy/mdio-gpio.c
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@ -79,7 +79,7 @@ static void mdio_dir(struct mdiobb_ctrl *ctrl, int dir)
* assume the pin serves as pull-up. If direction is
* output, the default value is high.
*/
gpiod_set_value(bitbang->mdo, 1);
gpiod_set_value_cansleep(bitbang->mdo, 1);
return;
}
@ -94,7 +94,7 @@ static int mdio_get(struct mdiobb_ctrl *ctrl)
struct mdio_gpio_info *bitbang =
container_of(ctrl, struct mdio_gpio_info, ctrl);
return gpiod_get_value(bitbang->mdio);
return gpiod_get_value_cansleep(bitbang->mdio);
}
static void mdio_set(struct mdiobb_ctrl *ctrl, int what)
@ -103,9 +103,9 @@ static void mdio_set(struct mdiobb_ctrl *ctrl, int what)
container_of(ctrl, struct mdio_gpio_info, ctrl);
if (bitbang->mdo)
gpiod_set_value(bitbang->mdo, what);
gpiod_set_value_cansleep(bitbang->mdo, what);
else
gpiod_set_value(bitbang->mdio, what);
gpiod_set_value_cansleep(bitbang->mdio, what);
}
static void mdc_set(struct mdiobb_ctrl *ctrl, int what)
@ -113,7 +113,7 @@ static void mdc_set(struct mdiobb_ctrl *ctrl, int what)
struct mdio_gpio_info *bitbang =
container_of(ctrl, struct mdio_gpio_info, ctrl);
gpiod_set_value(bitbang->mdc, what);
gpiod_set_value_cansleep(bitbang->mdc, what);
}
static const struct mdiobb_ops mdio_gpio_ops = {