[PATCH] gpiolib: fix: do not access oftree on non-OFDEVICE boards

[Alexander Kurz]

Non-OFDEVICE boards may have OFTREE=y set, e.g. by BOOTM_OFTREE.
Attempts to browse the oftree will crash barebox on those boards.

Signed-off-by: Alexander Kurz <akurz at blala.de>
---
 drivers/gpio/gpiolib.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index a3e17ad..a1ff965 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -416,7 +416,10 @@ int gpiochip_add(struct gpio_chip *chip)
 	for (i = chip->base; i < chip->base + chip->ngpio; i++)
 		gpio_desc[i].chip = chip;
 
-	return of_gpiochip_scan_hogs(chip);
+	if (IS_ENABLED(CONFIG_OFDEVICE))
+		return of_gpiochip_scan_hogs(chip);
+	else
+		return 0;
 }
 
 void gpiochip_remove(struct gpio_chip *chip)
-- 
2.1.4