ben-linux at fluff
Jul 2, 2008, 7:29 AM
Post #1 of 1
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[patch 1/1] MFD: SM501 fix gpio number calculation for upper bank
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The sm501_gpio_pin2nr() routine returns the wrong values
for gpios in the upper bank.
Signed-off-by: Ben Dooks <ben-linux [at] fluff>
Index: linux-2.6.26-rc8-quilt3/drivers/mfd/sm501.c
===================================================================
--- linux-2.6.26-rc8-quilt3.orig/drivers/mfd/sm501.c 2008-07-02 14:17:49.000000000 +0100
+++ linux-2.6.26-rc8-quilt3/drivers/mfd/sm501.c 2008-07-02 14:44:06.000000000 +0100
@@ -1108,7 +1108,9 @@ static void sm501_gpio_remove(struct sm5
static inline int sm501_gpio_pin2nr(struct sm501_devdata *sm, unsigned int pin)
{
struct sm501_gpio *gpio = &sm->gpio;
- return pin + (pin < 32) ? gpio->low.gpio.base : gpio->high.gpio.base;
+ int base = (pin < 32) ? gpio->low.gpio.base : gpio->high.gpio.base;
+
+ return (pin % 32) + base;
}
static inline int sm501_gpio_isregistered(struct sm501_devdata *sm)
--
--
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