[PATCH] at91_ether: use gpio_is_valid for phy IRQ line

[David Miller]

From: Nicolas Ferre <nicolas.ferre at atmel.com>
Date: Thu, 24 Nov 2011 22:21:14 +0100

> Use the generic gpiolib gpio_is_valid() function to test
> if the phy IRQ line GPIO is actually provided.
> 
> For non-connected or non-existing phy IRQ lines, -EINVAL
> value is used for phy_irq_pin field of struct at91_eth_data.
> 
> Signed-off-by: Nicolas Ferre <nicolas.ferre at atmel.com>

I'm assuming this goes through the ARM tree, because in both of my networking
trees there is no ARM at91 implementation of gpio_is_valid().