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SubjectRe: [PATCH v2] EEPROM: Introduce the use of devm_kzalloc
Hi Himangi,

On Thu, 24 Jul 2014 02:43:11 +0530, Himangi Saraogi wrote:
> This patch introduces the use of devm_kzalloc and does away with the
> kfrees in the probe and remove functions. Also, a label and the err
> variable are removed.
>
> Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
> Acked-by: Julia Lawall <julia.lawall@lip6.fr>
> ---
> v2: add missing semi-colon
> drivers/misc/eeprom/eeprom.c | 21 +++++----------------
> 1 file changed, 5 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/misc/eeprom/eeprom.c b/drivers/misc/eeprom/eeprom.c
> index 33f8673..f4aff20 100644
> --- a/drivers/misc/eeprom/eeprom.c
> +++ b/drivers/misc/eeprom/eeprom.c
> @@ -159,12 +159,11 @@ static int eeprom_probe(struct i2c_client *client,
> {
> struct i2c_adapter *adapter = client->adapter;
> struct eeprom_data *data;
> - int err;
>
> - if (!(data = kzalloc(sizeof(struct eeprom_data), GFP_KERNEL))) {
> - err = -ENOMEM;
> - goto exit;
> - }
> + data = devm_kzalloc(&client->dev, sizeof(struct eeprom_data),
> + GFP_KERNEL);
> + if (!data)
> + return -ENOMEM;

devm_kzalloc is declared in <linux/device.h> which is not included.
OTOH you still include <linux/slab.h> which is no longer needed.

Other than that (and the fact that you ignored my request to switch to
my new e-mail address), this looks good, thanks for the cleanup.

>
> memset(data->data, 0xff, EEPROM_SIZE);
> i2c_set_clientdata(client, data);
> @@ -190,22 +189,12 @@ static int eeprom_probe(struct i2c_client *client,
> }
>
> /* create the sysfs eeprom file */
> - err = sysfs_create_bin_file(&client->dev.kobj, &eeprom_attr);
> - if (err)
> - goto exit_kfree;
> -
> - return 0;
> -
> -exit_kfree:
> - kfree(data);
> -exit:
> - return err;
> + return sysfs_create_bin_file(&client->dev.kobj, &eeprom_attr);
> }
>
> static int eeprom_remove(struct i2c_client *client)
> {
> sysfs_remove_bin_file(&client->dev.kobj, &eeprom_attr);
> - kfree(i2c_get_clientdata(client));
>
> return 0;
> }

--
Jean Delvare
SUSE L3 Support


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