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drivers/pps/clients/pps-gpio.c: use devm_kzalloc

devm_kzalloc allocates memory that is released when a driver detaches.
This patch uses devm_kzalloc for data that is allocated in the probe
function of a platform device and is only freed in the remove function.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Cc: Rodolfo Giometti <giometti@enneenne.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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1 parent 11cd3db commit 507063b2a435b24951bce8e1f67ab65cda490f1b @JuliaLawall JuliaLawall committed with Feb 28, 2013
Showing with 2 additions and 4 deletions.
  1. +2 −4 drivers/pps/clients/pps-gpio.c
@@ -128,7 +128,8 @@ static int pps_gpio_probe(struct platform_device *pdev)
}
/* allocate space for device info */
- data = kzalloc(sizeof(struct pps_gpio_device_data), GFP_KERNEL);
+ data = devm_kzalloc(&pdev->dev, sizeof(struct pps_gpio_device_data),
+ GFP_KERNEL);
if (data == NULL) {
err = -ENOMEM;
goto return_error;
@@ -150,7 +151,6 @@ static int pps_gpio_probe(struct platform_device *pdev)
pps_default_params |= PPS_CAPTURECLEAR | PPS_OFFSETCLEAR;
data->pps = pps_register_source(&data->info, pps_default_params);
if (data->pps == NULL) {
- kfree(data);
pr_err("failed to register IRQ %d as PPS source\n", irq);
err = -EINVAL;
goto return_error;
@@ -164,7 +164,6 @@ static int pps_gpio_probe(struct platform_device *pdev)
get_irqf_trigger_flags(pdata), data->info.name, data);
if (ret) {
pps_unregister_source(data->pps);
- kfree(data);
pr_err("failed to acquire IRQ %d\n", irq);
err = -EINVAL;
goto return_error;
@@ -190,7 +189,6 @@ static int pps_gpio_remove(struct platform_device *pdev)
gpio_free(pdata->gpio_pin);
pps_unregister_source(data->pps);
pr_info("removed IRQ %d as PPS source\n", data->irq);
- kfree(data);
return 0;
}

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