[PATCH] gpio: ath79: convert to dynamic GPIO base allocation

[Shiji Yang]

ath79 target has already been converted to device tree based
platform. Using dynamic GPIO numberspace base to suppress the
warning:

gpio gpiochip0: Static allocation of GPIO base is deprecated, use dynamic allocation.

Tested on Atheros AR7241 and AR9344.

Signed-off-by: Shiji Yang <yangshiji66@xxxxxxxxxxx>
---
 drivers/gpio/gpio-ath79.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpio-ath79.c b/drivers/gpio/gpio-ath79.c
index f0c0c0f77eb0..d986424a661e 100644
--- a/drivers/gpio/gpio-ath79.c
+++ b/drivers/gpio/gpio-ath79.c
@@ -273,8 +273,8 @@ static int ath79_gpio_probe(struct platform_device *pdev)
 		dev_err(dev, "bgpio_init failed\n");
 		return err;
 	}
-	/* Use base 0 to stay compatible with legacy platforms */
-	ctrl->gc.base = 0;
+	/* Dynamic allocation */
+	ctrl->gc.base = -1;
 
 	/* Optional interrupt setup */
 	if (!np || of_property_read_bool(np, "interrupt-controller")) {
-- 
2.45.1