video: ssd1307fb: Use gpiod_set_value_cansleep() for reset

The reset signal can be produced by GPIO expander that can sleep.
In that case the probe function fails. Allow using GPIO expanders for
the reset signal by using the non-atomic gpiod_set_value_cansleep()
function.

Signed-off-by: Michal Vokáč <[email protected]>
Reviewed-by: Fabio Estevam <[email protected]>
Cc: Shawn Guo <[email protected]>
Cc: Rob Herring <[email protected]>
Signed-off-by: Bartlomiej Zolnierkiewicz <[email protected]>

drivers/video/fbdev/ssd1307fb.c

@@ -667,9 +667,9 @@ static int ssd1307fb_probe(struct i2c_client *client,
 
 	if (par->reset) {
 		/* Reset the screen */
-		gpiod_set_value(par->reset, 0);
+		gpiod_set_value_cansleep(par->reset, 0);
 		udelay(4);
-		gpiod_set_value(par->reset, 1);
+		gpiod_set_value_cansleep(par->reset, 1);
 		udelay(4);
 	}