[PATCH] MAX7301 GPIO fix portconfig

[PATCH] MAX7301 GPIO fix portconfig

[Jan Weitzel]

Fix wrong setting of portconfig register. 
mask size is 2bits, so shift must be twice offset
direction input value is 2

Signed-off-by: Jan Weitzel <J.Weitzel-guT5V/WYfQezQB+pC5nmwQ@public.gmane.org>
---
Index: linux-2.6.28/drivers/gpio/max7301.c
===================================================================
--- linux-2.6.28.orig/drivers/gpio/max7301.c
+++ linux-2.6.28/drivers/gpio/max7301.c
@@ -123,7 +123,7 @@ static int max7301_direction_input(struc
 
 	/* Standard GPIO API doesn't support pull-ups, has to be extended.
 	 * Hard-coding no pollup for now. */
-	*config = (*config & ~(3 << (offset & 3))) | (1 << (offset & 3));
+	*config = (*config & ~(3 << (2*(offset & 3)))) | (2 << (2*(offset & 3)));
 
 	ret = max7301_write(ts->spi, 0x08 + (offset >> 2), *config);
 
@@ -157,7 +157,7 @@ static int max7301_direction_output(stru
 
 	mutex_lock(&ts->lock);
 
-	*config = (*config & ~(3 << (offset & 3))) | (1 << (offset & 3));
+	*config = (*config & ~(3 << (2*(offset & 3)))) | (1 << (2*(offset & 3)));
 
 	ret = __max7301_set(ts, offset, value);
 

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