thermal: exynos: Reduce severity of too early temperature read

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Thermal core tries to read temperature during sensor registering in
thermal_zone_of_sensor_register().  In that time Exynos TMU driver and
hardware are not yet initialized.  Commit 0eb875d88a ("thermal:
exynos: Reading temperature makes sense only when TMU is turned on")
added a boolean flag to prevent reading bogus temperature in such
case but it exposed warning message during boot:
	[    3.864913] thermal thermal_zone0: failed to read out thermal zone (-22)

Return EAGAIN in such case to skip omitting such message because it
might mislead user.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>

...

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Krzysztof Kozlowski 2018-05-13 19:54:02 +02:00 • committed by Eduardo Valentin

parent 45f8b0dde3

commit ffe6e16f14

1 changed files with 7 additions and 1 deletions

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drivers/thermal/samsung/exynos_tmu.c

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