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path: root/drivers/of/gpio.c
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Diffstat (limited to 'drivers/of/gpio.c')
-rw-r--r--drivers/of/gpio.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/of/gpio.c b/drivers/of/gpio.c
index fde53a3a45a3..c8618d3282cf 100644
--- a/drivers/of/gpio.c
+++ b/drivers/of/gpio.c
@@ -46,7 +46,7 @@ int of_get_gpio_flags(struct device_node *np, int index,
goto err0;
}
- gc = gpio_np->data;
+ gc = of_node_to_gpiochip(gpio_np);
if (!gc) {
pr_debug("%s: gpio controller %s isn't registered\n",
np->full_name, gpio_np->full_name);
@@ -193,7 +193,6 @@ int of_mm_gpiochip_add(struct device_node *np,
if (mm_gc->save_regs)
mm_gc->save_regs(mm_gc);
- np->data = &mm_gc->gc;
mm_gc->gc.of_node = np;
ret = gpiochip_add(gc);
@@ -207,7 +206,6 @@ int of_mm_gpiochip_add(struct device_node *np,
np->full_name, gc->base);
return 0;
err2:
- np->data = NULL;
iounmap(mm_gc->regs);
err1:
kfree(gc->label);
@@ -217,3 +215,14 @@ err0:
return ret;
}
EXPORT_SYMBOL(of_mm_gpiochip_add);
+
+/* Private function for resolving node pointer to gpio_chip */
+static int of_gpiochip_is_match(struct gpio_chip *chip, void *data)
+{
+ return chip->of_node == data;
+}
+
+struct gpio_chip *of_node_to_gpiochip(struct device_node *np)
+{
+ return gpiochip_find(np, of_gpiochip_is_match);
+}