Patchwork Fix gpio-mdio driver to work for gpio's that return something other than 0 and 1.

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Submitter Lennart Sorensen
Date Nov. 9, 2009, 7:02 p.m.
Message ID <>
Download mbox | patch
Permalink /patch/38019/
State Changes Requested
Delegated to: David Miller
Headers show


Lennart Sorensen - Nov. 9, 2009, 7:02 p.m.
The gpio-mdio driver seems to assume GPIOs return 0 and 1, although that
doesn't seem to be the case.  I see return values of 0 and 0x1000000
for the GPIO I happen to be using.  A simple application of !! solves
that though.

Tested on a RuggedCom RX5000 (mpc8360e based).

Signed-off-by: Lennart Sorensen <>

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diff --git a/drivers/net/phy/mdio-gpio.c b/drivers/net/phy/mdio-gpio.c
index 8659d34..7e76f0c 100644
--- a/drivers/net/phy/mdio-gpio.c
+++ b/drivers/net/phy/mdio-gpio.c
@@ -55,7 +55,7 @@  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);
+	return !!gpio_get_value(bitbang->mdio);
 static void mdio_set(struct mdiobb_ctrl *ctrl, int what)