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| author |   Sven Wegener <sven.wegener@stealer.net> | 2008-12-03 08:12:53 +0000 |
|---|---|---|
| committer |   Richard Purdie <rpurdie@linux.intel.com> | 2009-01-08 12:38:58 +0000 |
| commit | f785d022add53ec4d9625495b335bed40bd6c079 (patch) | |
| tree | 99225d733708b6dbcc54ffa0a33f528eb756ee1e /drivers/leds/leds-pca9532.c | |
| parent | leds: Fix wrong loop direction on removal in leds-ams-delta (diff) | |
| download | linux-dev-f785d022add53ec4d9625495b335bed40bd6c079.tar.xz linux-dev-f785d022add53ec4d9625495b335bed40bd6c079.zip | |
leds: leds-pca9532 - fix memory leak and properly handle errors
When the registration fails, we need to release the memory we allocated.
Also we need to save the error from led_classdev_register and propagate
it up, else we'll return success, even if we failed.
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
Diffstat (limited to 'drivers/leds/leds-pca9532.c')
| -rw-r--r-- | drivers/leds/leds-pca9532.c | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/drivers/leds/leds-pca9532.c b/drivers/leds/leds-pca9532.c index f0883e6ebc50..62b60a038e2c 100644 --- a/drivers/leds/leds-pca9532.c +++ b/drivers/leds/leds-pca9532.c @@ -204,8 +204,8 @@ static int pca9532_configure(struct i2c_client *client, led->ldev.brightness = LED_OFF; led->ldev.brightness_set = pca9532_set_brightness; led->ldev.blink_set = pca9532_set_blink; - if (led_classdev_register(&client->dev, - &led->ldev) < 0) { + err = led_classdev_register(&client->dev, &led->ldev); + if (err < 0) { dev_err(&client->dev, "couldn't register LED %s\n", led->name); @@ -263,7 +263,6 @@ exit: } return err; - } static int pca9532_probe(struct i2c_client *client, @@ -271,12 +270,16 @@ static int pca9532_probe(struct i2c_client *client, { struct pca9532_data *data = i2c_get_clientdata(client); struct pca9532_platform_data *pca9532_pdata = client->dev.platform_data; + int err; + + if (!pca9532_pdata) + return -EIO; if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) return -EIO; - data = kzalloc(sizeof(struct pca9532_data), GFP_KERNEL); + data = kzalloc(sizeof(*data), GFP_KERNEL); if (!data) return -ENOMEM; @@ -285,12 +288,13 @@ static int pca9532_probe(struct i2c_client *client, data->client = client; mutex_init(&data->update_lock); - if (pca9532_pdata == NULL) - return -EIO; - - pca9532_configure(client, data, pca9532_pdata); - return 0; + err = pca9532_configure(client, data, pca9532_pdata); + if (err) { + kfree(data); + i2c_set_clientdata(client, NULL); + } + return err; } static int pca9532_remove(struct i2c_client *client) |