Re: [PATCH v2 4/6] mfd: tps65219: Specify restart mode

From: Lee Jones
Date: Fri Aug 18 2023 - 12:11:34 EST


On Wed, 09 Aug 2023, Benjamin Bara wrote:

> From: Benjamin Bara <benjamin.bara@xxxxxxxxxxx>
>
> The current restart handler registration does not specify whether the
> restart is a cold or a warm one. Instead, cold ones are typically
> registered with a HIGH prio. Now, as do_kernel_restart() knows about the
> type, the priorization is implicitly done (cold restarts are executed
> first) and the reboot_mode kernel parameter (which is currently mostly
> ignored) can be respected.
>
> Signed-off-by: Benjamin Bara <benjamin.bara@xxxxxxxxxxx>
> ---
> v2:
> - improve commit message
> ---
> drivers/mfd/tps65219.c | 17 +++++++++++++----
> 1 file changed, 13 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/mfd/tps65219.c b/drivers/mfd/tps65219.c
> index 0e0c42e4fdfc..85752b93256e 100644
> --- a/drivers/mfd/tps65219.c
> +++ b/drivers/mfd/tps65219.c
> @@ -278,12 +278,21 @@ static int tps65219_probe(struct i2c_client *client)
> }
> }
>
> - ret = devm_register_restart_handler(tps->dev,
> - tps65219_restart_handler,
> - tps);
> + ret = devm_register_cold_restart_handler(tps->dev,
> + tps65219_restart_handler,
> + tps);
>
> if (ret) {
> - dev_err(tps->dev, "cannot register restart handler, %d\n", ret);
> + dev_err(tps->dev, "cannot register cold restart handler, %d\n", ret);
> + return ret;
> + }
> +
> + ret = devm_register_warm_restart_handler(tps->dev,
> + tps65219_restart_handler,
> + tps);
> +

Sorry, why do we have to now register 2 restart handlers?

Seems like a regression?

> + if (ret) {
> + dev_err(tps->dev, "cannot register warm restart handler, %d\n", ret);
> return ret;
> }
>
>
> --
> 2.34.1
>

--
Lee Jones [李琼斯]