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SubjectRe: [PATCH] hwmon: Mark expected switch fall-throughs
Hi Gustavo,

On Mon, 2 Jul 2018 16:30:17 -0500, Gustavo A. R. Silva wrote:
> In preparation to enabling -Wimplicit-fallthrough, mark switch cases
> where we are expecting to fall through.

That's a great initiative, thanks for doing that.

> Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
> ---
> drivers/hwmon/emc1403.c | 2 ++
> drivers/hwmon/nct6775.c | 2 +-
> 2 files changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/hwmon/emc1403.c b/drivers/hwmon/emc1403.c
> index 1ea7ca5..aaebeb7 100644
> --- a/drivers/hwmon/emc1403.c
> +++ b/drivers/hwmon/emc1403.c
> @@ -443,8 +443,10 @@ static int emc1403_probe(struct i2c_client *client,
> switch (id->driver_data) {
> case emc1404:
> data->groups[2] = &emc1404_group;
> + /* fall through */
> case emc1403:
> data->groups[1] = &emc1403_group;
> + /* fall through */
> case emc1402:
> data->groups[0] = &emc1402_group;
> }
> diff --git a/drivers/hwmon/nct6775.c b/drivers/hwmon/nct6775.c
> index 3714990..c6bd61e 100644
> --- a/drivers/hwmon/nct6775.c
> +++ b/drivers/hwmon/nct6775.c
> @@ -2541,7 +2541,7 @@ static void pwm_update_registers(struct nct6775_data *data, int nr)
> case thermal_cruise:
> nct6775_write_value(data, data->REG_TARGET[nr],
> data->target_temp[nr]);
> - /* intentional */
> + /* fall through */

Do you know which -Wimplicit-fallthrough level we will be using? Level
1 would be happy with the initial comment, no change would be needed.
If level 2-4 then yes the change is needed.

> default:
> reg = nct6775_read_value(data, data->REG_FAN_MODE[nr]);
> reg = (reg & ~data->tolerance_mask) |

Reviewed-by: Jean Delvare <jdelvare@suse.de>

--
Jean Delvare
SUSE L3 Support

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