linux-kernel - Re: [PATCH v3 2/3] thermal: improve error message in thermal zone registration

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Message-ID: <CAHLCerOWxjG2nhyQFDy8=xXWhupL=7=juAzzTvnbAeutF=pU=g@mail.gmail.com>
Date:   Mon, 9 Dec 2019 13:11:45 +0530
From:   Amit Kucheria <amit.kucheria@...durent.com>
To:     Wei Wang <wvw@...gle.com>
Cc:     Wei Wang <wei.vince.wang@...il.com>,
        Zhang Rui <rui.zhang@...el.com>,
        Eduardo Valentin <edubezval@...il.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Linux PM list <linux-pm@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 2/3] thermal: improve error message in thermal zone registration

On Thu, Dec 5, 2019 at 12:50 PM Wei Wang <wvw@...gle.com> wrote:
>
> Follow up with commit 67eed44b8a8a ("thermal: Add some error messages")
> to clean up checkpatch warning on line length and also add more message
> for developers.
>
> Signed-off-by: Wei Wang <wvw@...gle.com>

Reviewed-by: Amit Kucheria <amit.kucheria@...aro.org>

> ---
>  drivers/thermal/thermal_core.c | 18 +++++++++++-------
>  1 file changed, 11 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
> index 974e2d91c30b..9db7f72e70f8 100644
> --- a/drivers/thermal/thermal_core.c
> +++ b/drivers/thermal/thermal_core.c
> @@ -1255,29 +1255,33 @@ thermal_zone_device_register(const char *type, int trips, int mask,
>         int count;
>         struct thermal_governor *governor;
>
> -       if (!type || strlen(type) == 0) {
> +       if (!type || !type[0]) {
>                 pr_err("Error: No thermal zone type defined\n");
>                 return ERR_PTR(-EINVAL);
>         }
>
> -       if (type && strlen(type) >= THERMAL_NAME_LENGTH) {
> -               pr_err("Error: Thermal zone name (%s) too long, should be under %d chars\n",
> -                      type, THERMAL_NAME_LENGTH);
> +       if (strlen(type) >= THERMAL_NAME_LENGTH) {
> +               pr_err("Error: Thermal zone name over %d chars: %s\n",
> +                       THERMAL_NAME_LENGTH, type);
>                 return ERR_PTR(-EINVAL);
>         }
>
>         if (trips > THERMAL_MAX_TRIPS || trips < 0 || mask >> trips) {
> -               pr_err("Error: Incorrect number of thermal trips\n");
> +               pr_err("Error: Incorrect number of thermal trips: %s\n", type);
>                 return ERR_PTR(-EINVAL);
>         }
>
>         if (!ops) {
> -               pr_err("Error: Thermal zone device ops not defined\n");
> +               pr_err("Error: Thermal zone device ops not defined: %s\n",
> +                       type);
>                 return ERR_PTR(-EINVAL);
>         }
>
> -       if (trips > 0 && (!ops->get_trip_type || !ops->get_trip_temp))
> +       if (trips > 0 && (!ops->get_trip_type || !ops->get_trip_temp)) {
> +               pr_err("Error: Thermal zone device missing callback: %s\n",
> +                       type);
>                 return ERR_PTR(-EINVAL);
> +       }
>
>         tz = kzalloc(sizeof(*tz), GFP_KERNEL);
>         if (!tz)
> --
> 2.24.0.393.g34dc348eaf-goog
>