b167421e55
Add the latest linux available from https://github.com/armbian/build commit de58ac1faac92724c6449db12c22affaeb003875, tag: sunxi-5.3, alongside all the patches that it comes with. Signed-off-by: Vicentiu Galanopulo <vicentiu@balena.io>
31 lines
1 KiB
Diff
31 lines
1 KiB
Diff
From a6b5eb09bddbd0c331f41fefa2fd2f71a2cf9455 Mon Sep 17 00:00:00 2001
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From: Vasily Khoruzhick <anarsoul@gmail.com>
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Date: Tue, 24 Apr 2018 22:21:10 -0700
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Subject: [PATCH 036/146] sun4i-gpadc-iio: ignore zero samples to avoid force
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poweroff when reading first sample
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Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
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---
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drivers/iio/adc/sun4i-gpadc-iio.c | 6 ++++++
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1 file changed, 6 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 fdfa01bad325..68256e73a4d2 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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@@ -751,6 +751,12 @@ static int sun4i_gpadc_get_temp(void *data, int *temp)
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if (sun4i_gpadc_temp_read(info->indio_dev, &val, info->sensor_id))
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return -ETIMEDOUT;
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+ /* Ignore first sample which is always zero. 0 is either too
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+ * cold or too hot, so we can safely ignore it
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+ */
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+ if (val == 0)
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+ return -ETIMEDOUT;
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+
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sun4i_gpadc_temp_scale(info->indio_dev, &scale);
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sun4i_gpadc_temp_offset(info->indio_dev, &offset);
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--
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2.17.1
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