[patch 2.6.25-rc4] gpio/pca953x bugfix: mark as can_sleep

[David Brownell <david-b@pacbell.net>]

The pca953x driver is an I2C driver so gpio_chip->can_sleep should be set.
This lets upper layers know they should use the gpio_*_cansleep() calls
to access values, and may not access them from nonsleeping contexts.

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
---
Merge before 2.6.25-final, please.  This will for example prevent
leds-gpio from issuing blocking I2C calls from timer/irq contexts.

 drivers/gpio/pca953x.c |    1 +
 1 file changed, 1 insertion(+)

--- g26.orig/drivers/gpio/pca953x.c	2008-03-08 11:17:22.000000000 -0800
+++ g26/drivers/gpio/pca953x.c	2008-03-09 13:51:13.000000000 -0700
@@ -184,6 +184,7 @@ static void pca953x_setup_gpio(struct pc
 	gc->direction_output = pca953x_gpio_direction_output;
 	gc->get = pca953x_gpio_get_value;
 	gc->set = pca953x_gpio_set_value;
+	gc->can_sleep = 1;
 
 	gc->base = chip->gpio_start;
 	gc->ngpio = gpios;