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authorTobias Klauser <tklauser@distanz.ch>2011-09-09 11:09:50 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2011-09-20 22:46:32 -0700
commitcca84699a079a91b0a0cb4f2da8548e56859376a (patch)
treecbce1c7311de1f9a739e489101ab19a4555f3d09 /drivers/input
parentc3a01ba9e45f01c6505a41efb33c420a0c959eb3 (diff)
Input: gpio_keys - use of_property_read_u32()
Use the of_property_read_u32() helper function to retrieve u32 values from the device tree. Also do not pass the len parameter to of_get_property if it isn't checked afterwards. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input')
-rw-r--r--drivers/input/keyboard/gpio_keys.c24
1 files changed, 13 insertions, 11 deletions
diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
index 67df91af8424..ed1ed469d085 100644
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -461,8 +461,7 @@ static int gpio_keys_get_devtree_pdata(struct device *dev,
struct device_node *node, *pp;
int i;
struct gpio_keys_button *buttons;
- const u32 *reg;
- int len;
+ u32 reg;
node = dev->of_node;
if (node == NULL)
@@ -470,7 +469,7 @@ static int gpio_keys_get_devtree_pdata(struct device *dev,
memset(pdata, 0, sizeof *pdata);
- pdata->rep = !!of_get_property(node, "autorepeat", &len);
+ pdata->rep = !!of_get_property(node, "autorepeat", NULL);
/* First count the subnodes */
pdata->nbuttons = 0;
@@ -498,22 +497,25 @@ static int gpio_keys_get_devtree_pdata(struct device *dev,
buttons[i].gpio = of_get_gpio_flags(pp, 0, &flags);
buttons[i].active_low = flags & OF_GPIO_ACTIVE_LOW;
- reg = of_get_property(pp, "linux,code", &len);
- if (!reg) {
+ if (of_property_read_u32(pp, "linux,code", &reg)) {
dev_err(dev, "Button without keycode: 0x%x\n", buttons[i].gpio);
goto out_fail;
}
- buttons[i].code = be32_to_cpup(reg);
+ buttons[i].code = reg;
- buttons[i].desc = of_get_property(pp, "label", &len);
+ buttons[i].desc = of_get_property(pp, "label", NULL);
- reg = of_get_property(pp, "linux,input-type", &len);
- buttons[i].type = reg ? be32_to_cpup(reg) : EV_KEY;
+ if (of_property_read_u32(pp, "linux,input-type", &reg) == 0)
+ buttons[i].type = reg;
+ else
+ buttons[i].type = EV_KEY;
buttons[i].wakeup = !!of_get_property(pp, "gpio-key,wakeup", NULL);
- reg = of_get_property(pp, "debounce-interval", &len);
- buttons[i].debounce_interval = reg ? be32_to_cpup(reg) : 5;
+ if (of_property_read_u32(pp, "debounce-interval", &reg) == 0)
+ buttons[i].debounce_interval = reg;
+ else
+ buttons[i].debounce_interval = 5;
i++;
}