openwrtv3/target/linux/mediatek/patches/0014-thermal-Add-comment-explaining-test-for-critical-tem.patch
John Crispin 25afe99b31 mediatek: add support for the new MT7623 Arm SoC
the support is still WIP. next steps are to make the pmic and ethernet work.
this is the first commit to make sure nothing gets lost.

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 47354
2015-11-02 10:18:50 +00:00

34 lines
1.1 KiB
Diff

From 18f50eae474edc716b01959fad6898c8553b131c Mon Sep 17 00:00:00 2001
From: Sascha Hauer <s.hauer@pengutronix.de>
Date: Wed, 13 May 2015 10:52:33 +0200
Subject: [PATCH 14/76] thermal: Add comment explaining test for critical
temperature
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>
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
---
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;
}
--
1.7.10.4