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thermal: exynos: Defer probe if vtmu is present but not registered 

The driver doesn't check if the regulator_get_optional return value is
-EPROBE_DEFER so it will wrongly assume that the regulator couldn't be
found just because the regulator driver wasn't registered yet, i.e:

exynos-tmu 10060000.tmu: Regulator node (vtmu) not found

In this case the return value should be propagated to allow the driver
probe function to be deferred until the regulator driver is registered.

Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Andi Shyti <andi.shyti@samsung.com>
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
This commit is contained in:
Javier Martinez Canillas 2016-02-18 15:19:11 -03:00 committed by Eduardo Valentin
parent 4d3583cd1c
commit ccb361d2fd
1 changed files with 2 additions and 0 deletions
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2
drivers/thermal/samsung/exynos_tmu.c
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@ -1318,6 +1318,8 @@ static int exynos_tmu_probe(struct platform_device *pdev)
return ret;
}
} else {
if (PTR_ERR(data->regulator) == -EPROBE_DEFER)
return -EPROBE_DEFER;
dev_info(&pdev->dev, "Regulator node (vtmu) not found\n");
}