openwrt-owl/target/linux/mediatek/patches/0014-thermal-Add-comment-explaining-test-for-critical-tem.patch

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(+)

--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -435,6 +435,11 @@ int thermal_zone_get_temp(struct thermal
 			}
 		}
 
+		/*
+		 * 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;
 	}