[PATCH 05/15] thermal: Add comment explaining test for critical temperature
Mikko Perttunen
mikko.perttunen at kapsi.fi
Wed May 20 00:18:30 PDT 2015
On 05/13/15 11:52, Sascha Hauer wrote:
> The code testing if a temperature should be emulated or not is
> not obvious. Add a comment explaining why this test is done.
>
> Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
> ---
> drivers/thermal/thermal_core.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
> index 3e0fe55..e204deb 100644
> --- a/drivers/thermal/thermal_core.c
> +++ b/drivers/thermal/thermal_core.c
> @@ -435,6 +435,11 @@ int thermal_zone_get_temp(struct thermal_zone_device *tz, int *temp)
> }
> }
>
> + /*
> + * Only allow emulating a temperature when the real temperature
> + * is below the critical temperature so that the emulation code
> + * cannot hide critical conditions.
> + */
> if (!ret && *temp < crit_temp)
> *temp = tz->emul_temperature;
> }
>
Reviewed-by: Mikko Perttunen <mperttunen at nvidia.com>
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