On Mon, Jul 08, 2019 at 08:33:32PM +0800, Fuqian Huang wrote:
> devm_add_action_or_reset() is introduced as a helper function which
> internally calls devm_add_action(). If devm_add_action() fails
> then it will execute the action mentioned and return the error code.
> This reduce source code size (avoid writing the action twice)
> and reduce the likelyhood of bugs.
>
> Signed-off-by: Fuqian Huang <huangfq.daxian@xxxxxxxxx>
> ---
> drivers/input/mouse/elan_i2c_core.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/input/mouse/elan_i2c_core.c b/drivers/input/mouse/elan_i2c_core.c
> index 420efaab3860..a8d4f3bd09bf 100644
> --- a/drivers/input/mouse/elan_i2c_core.c
> +++ b/drivers/input/mouse/elan_i2c_core.c
> @@ -1234,9 +1234,8 @@ static int elan_probe(struct i2c_client *client,
> return error;
> }
>
> - error = devm_add_action(dev, elan_remove_sysfs_groups, data);
> + error = devm_add_action_or_reset(dev, elan_remove_sysfs_groups, data);
Actually, the driver should use devm_device_add_groups() and then we do
not need custom cleanup action, I posted a patch for that.
> if (error) {
> - elan_remove_sysfs_groups(data);
> dev_err(dev, "Failed to add sysfs cleanup action: %d\n",
> error);
> return error;
> --
> 2.11.0
>
Thanks.
--
Dmitry
