[PATCH 05/15] thermal: Add comment explaining test for critical temperature
From: Sascha Hauer <s.hauer@pengutronix.de>
Date: 2015-05-13 08:54:28
Also in:
linux-arm-kernel, linux-mediatek, lkml
Subsystem:
the rest, thermal · Maintainers:
Linus Torvalds, Rafael J. Wysocki, Daniel Lezcano
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@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; }
--
2.1.4