a6654dc76d
Changelog-entry: Rename meta-resin to meta-balena in repository Signed-off-by: Florin Sarbu <florin@balena.io>
34 lines
1.1 KiB
Diff
34 lines
1.1 KiB
Diff
From e42ea77a5f2b389eed2c9004eab80bf6589ebf5a Mon Sep 17 00:00:00 2001
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From: Icenowy Zheng <icenowy@aosc.io>
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Date: Tue, 1 Aug 2017 23:42:12 +0800
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Subject: [PATCH] iio: adc: sun4i-gpadc: workaroud bogus THS raw value 0
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readout
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When booting the system, the THS may read out a bogus false value which
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is raw value 0.
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On H3 it represents a extremely high temperature and can shutdown the
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system immediately.
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Workaround it by make it return -EINVAL when the raw value is 0 (which
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is unlikely to happen).
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Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
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---
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drivers/iio/adc/sun4i-gpadc-iio.c | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/drivers/iio/adc/sun4i-gpadc-iio.c b/drivers/iio/adc/sun4i-gpadc-iio.c
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index f378ca0bc0b30..a89dcb6fba4ec 100644
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--- a/drivers/iio/adc/sun4i-gpadc-iio.c
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+++ b/drivers/iio/adc/sun4i-gpadc-iio.c
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@@ -262,6 +262,9 @@ static int sun4i_gpadc_temp_read(struct iio_dev *indio_dev, int *val)
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pm_runtime_mark_last_busy(indio_dev->dev.parent);
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pm_runtime_put_autosuspend(indio_dev->dev.parent);
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+ if (!*val)
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+ return -EINVAL;
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+
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return 0;
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}
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