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Date: Wed, 13 May 2015 10:52:33 +0200 From: Sascha Hauer <s.hauer@...gutronix.de> To: linux-pm@...r.kernel.org Cc: Zhang Rui <rui.zhang@...el.com>, Eduardo Valentin <edubezval@...il.com>, linux-kernel@...r.kernel.org, Stephen Warren <swarren@...dotorg.org>, Mikko Perttunen <mikko.perttunen@...si.fi>, kernel@...gutronix.de, linux-mediatek@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org, Brian Norris <computersforpeace@...il.com>, Sascha Hauer <s.hauer@...gutronix.de> Subject: [PATCH 05/15] 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@...gutronix.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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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