net: mdio-gpio: support access that may sleep

Some systems using mdio-gpio may use gpio on message based busses, which
require sleeping (e.g. gpio from an I2C I/O expander).

Since this driver does not use IRQ handler, it is safe to use the
_cansleep suffixed gpio accessors.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/phy/mdio-gpio.c b/drivers/net/phy/mdio-gpio.c
index 49ce7ec..c9cb486 100644 (file)
--- a/drivers/net/phy/mdio-gpio.c
+++ b/drivers/net/phy/mdio-gpio.c
@@ -80,7 +80,8 @@ 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.
                 */
-               gpio_set_value(bitbang->mdo, 1 ^ bitbang->mdo_active_low);
+               gpio_set_value_cansleep(bitbang->mdo,
+                                       1 ^ bitbang->mdo_active_low);
                return;
        }
 
@@ -96,7 +97,8 @@ static int mdio_get(struct mdiobb_ctrl *ctrl)
        struct mdio_gpio_info *bitbang =
                container_of(ctrl, struct mdio_gpio_info, ctrl);
 
-       return gpio_get_value(bitbang->mdio) ^ bitbang->mdio_active_low;
+       return gpio_get_value_cansleep(bitbang->mdio) ^
+               bitbang->mdio_active_low;
 }
 
 static void mdio_set(struct mdiobb_ctrl *ctrl, int what)
@@ -105,9 +107,11 @@ static void mdio_set(struct mdiobb_ctrl *ctrl, int what)
                container_of(ctrl, struct mdio_gpio_info, ctrl);
 
        if (bitbang->mdo)
-               gpio_set_value(bitbang->mdo, what ^ bitbang->mdo_active_low);
+               gpio_set_value_cansleep(bitbang->mdo,
+                                       what ^ bitbang->mdo_active_low);
        else
-               gpio_set_value(bitbang->mdio, what ^ bitbang->mdio_active_low);
+               gpio_set_value_cansleep(bitbang->mdio,
+                                       what ^ bitbang->mdio_active_low);
 }
 
 static void mdc_set(struct mdiobb_ctrl *ctrl, int what)
@@ -115,7 +119,7 @@ static void mdc_set(struct mdiobb_ctrl *ctrl, int what)
        struct mdio_gpio_info *bitbang =
                container_of(ctrl, struct mdio_gpio_info, ctrl);
 
-       gpio_set_value(bitbang->mdc, what ^ bitbang->mdc_active_low);
+       gpio_set_value_cansleep(bitbang->mdc, what ^ bitbang->mdc_active_low);
 }
 
 static struct mdiobb_ops mdio_gpio_ops = {