[ARM] 4232/1: AT91: Generic GPIO bug
The new gpio_direction_input() and gpio_direction_output() functions
were both enabling output mode. When configuring a GPIO for input mode,
you need to program the ODR (Output Disable Register).
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-at91/gpio.c b/arch/arm/mach-at91/gpio.c
index 7b87f3f..44211a0 100644
--- a/arch/arm/mach-at91/gpio.c
+++ b/arch/arm/mach-at91/gpio.c
@@ -210,7 +210,7 @@
if (!pio || !(__raw_readl(pio + PIO_PSR) & mask))
return -EINVAL;
- __raw_writel(mask, pio + PIO_OER);
+ __raw_writel(mask, pio + PIO_ODR);
return 0;
}
EXPORT_SYMBOL(gpio_direction_input);
