From: k00278426 <kong.kongxin...@hisilicon.com>
Some gpio controller dts nodes has no "gpio-range" property will cause gpio
request fail(return -517).
Maybe in this case gpio request shouldn't go into pinctrl subsystem.
This patch try to resolve this gpio request issue.
Signed-off-by: k00278426 <kong.kongxin...@hisilicon.com>
Signed-off-by: Yunlei He <heyun...@huawei.com>
---
drivers/gpio/gpio-pl061.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/gpio/gpio-pl061.c b/drivers/gpio/gpio-pl061.c
index 84b49cf..37ffe38 100644
--- a/drivers/gpio/gpio-pl061.c
+++ b/drivers/gpio/gpio-pl061.c
@@ -24,6 +24,7 @@
#include <linux/slab.h>
#include <linux/pinctrl/consumer.h>
#include <linux/pm.h>
+#include <linux/of_address.h>
#define GPIODIR 0x400
#define GPIOIS 0x404
@@ -264,8 +265,10 @@ static int pl061_probe(struct amba_device *adev, const
struct amba_id *id)
spin_lock_init(&chip->lock);
- chip->gc.request = pl061_gpio_request;
- chip->gc.free = pl061_gpio_free;
+ if (of_get_property(dev->of_node, "gpio-ranges", NULL)) {
+ chip->gc.request = pl061_gpio_request;
+ chip->gc.free = pl061_gpio_free;
+ }
chip->gc.direction_input = pl061_direction_input;
chip->gc.direction_output = pl061_direction_output;
chip->gc.get = pl061_get_value;
--
1.9.1
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