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authorMarkus Pargmann <mpa@pengutronix.de>2013-10-29 09:19:24 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-10-30 00:58:18 +0100
commitd27f25c9c216dc9f9a320fe78f729aebdebcae50 (patch)
treeee7d8fe9e8f6b611837e96be4792f6acf9581e7d /drivers/w1
parentw1-gpio: Detect of_gpio_error for first gpio (diff)
downloadlinux-d27f25c9c216dc9f9a320fe78f729aebdebcae50.tar.xz
linux-d27f25c9c216dc9f9a320fe78f729aebdebcae50.zip
w1-gpio: Use devm_* functions
Signed-off-by: Markus Pargmann <mpa@pengutronix.de> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/w1')
-rw-r--r--drivers/w1/masters/w1-gpio.c28
1 files changed, 9 insertions, 19 deletions
diff --git a/drivers/w1/masters/w1-gpio.c b/drivers/w1/masters/w1-gpio.c
index ae53e8832845..264ad1c583ab 100644
--- a/drivers/w1/masters/w1-gpio.c
+++ b/drivers/w1/masters/w1-gpio.c
@@ -99,25 +99,27 @@ static int w1_gpio_probe(struct platform_device *pdev)
return -ENXIO;
}
- master = kzalloc(sizeof(struct w1_bus_master), GFP_KERNEL);
+ master = devm_kzalloc(&pdev->dev, sizeof(struct w1_bus_master),
+ GFP_KERNEL);
if (!master) {
dev_err(&pdev->dev, "Out of memory\n");
return -ENOMEM;
}
- err = gpio_request(pdata->pin, "w1");
+ err = devm_gpio_request(&pdev->dev, pdata->pin, "w1");
if (err) {
dev_err(&pdev->dev, "gpio_request (pin) failed\n");
- goto free_master;
+ return err;
}
if (gpio_is_valid(pdata->ext_pullup_enable_pin)) {
- err = gpio_request_one(pdata->ext_pullup_enable_pin,
- GPIOF_INIT_LOW, "w1 pullup");
+ err = devm_gpio_request_one(&pdev->dev,
+ pdata->ext_pullup_enable_pin, GPIOF_INIT_LOW,
+ "w1 pullup");
if (err < 0) {
dev_err(&pdev->dev, "gpio_request_one "
"(ext_pullup_enable_pin) failed\n");
- goto free_gpio;
+ return err;
}
}
@@ -135,7 +137,7 @@ static int w1_gpio_probe(struct platform_device *pdev)
err = w1_add_master_device(master);
if (err) {
dev_err(&pdev->dev, "w1_add_master device failed\n");
- goto free_gpio_ext_pu;
+ return err;
}
if (pdata->enable_external_pullup)
@@ -147,16 +149,6 @@ static int w1_gpio_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, master);
return 0;
-
- free_gpio_ext_pu:
- if (gpio_is_valid(pdata->ext_pullup_enable_pin))
- gpio_free(pdata->ext_pullup_enable_pin);
- free_gpio:
- gpio_free(pdata->pin);
- free_master:
- kfree(master);
-
- return err;
}
static int w1_gpio_remove(struct platform_device *pdev)
@@ -171,8 +163,6 @@ static int w1_gpio_remove(struct platform_device *pdev)
gpio_set_value(pdata->ext_pullup_enable_pin, 0);
w1_remove_master_device(master);
- gpio_free(pdata->pin);
- kfree(master);
return 0;
}