[PATCH] gpio: pl061 : fix gpio pl061 request bug
From: Xinwei Kong <hidden>
Date: 2014-10-09 12:03:45
Subsystem:
gpio subsystem, the rest · Maintainers:
Linus Walleij, Bartosz Golaszewski, Linus Torvalds
From: k00278426 <kong.kongxinwei-C8/M+/jPZTeaMJb+Lgu22Q@public.gmane.org> 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.kongxinwei-C8/M+/jPZTeaMJb+Lgu22Q@public.gmane.org> Signed-off-by: Yunlei He <redacted> Signed-off-by: Haojian Zhuang <redacted> --- 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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