armbian-build/patch/kernel/sunxi-current/0036-sun4i-gpadc-iio-ignore-zero-samples-to-avoid-force-p.patch
Igor Pečovnik 150ac0c2af
Remove K<4, change branches, new features (#1586)
AR-1 - Adding support category for distributions
AR-4 - Remove Allwinner legacy
AR-5 - Drop Udoo family and move Udoo board into newly created imx6 family
AR-9 - Rename sunxi-next to sunxi-legacy
AR-10 - Rename sunxi-dev to sunxi-current
AR-11 - Adding Radxa Rockpi S support
AR-13 - Rename rockchip64-default to rockchip64-legacy
AR-14 - Add rockchip64-current as mainline source
AR-15 - Drop Rockchip 4.19.y NEXT, current become 5.3.y
AR-16 - Rename RK3399 default to legacy
AR-17 - Rename Odroid XU4 next and default to legacy 4.14.y, add DEV 5.4.y
AR-18 - Add Odroid N2 current mainline
AR-19 - Move Odroid C1 to meson family
AR-20 - Rename mvebu64-default to mvebu64-legacy
AR-21 - Rename mvebu-default to mvebu-legacy
AR-22 - Rename mvebu-next to mvebu-current
AR-23 - Drop meson64 default and next, current becomes former DEV 5.3.y
AR-24 - Drop cubox family and move Cubox/Hummingboard boards under imx6
AR-26 - Adjust motd
AR-27 - Enabling distribution release status
AR-28 - Added new GCC compilers
AR-29 - Implementing Ubuntu Eoan
AR-30 - Add desktop packages per board or family
AR-31 - Remove (Ubuntu/Debian) distribution name from image filename
AR-32 - Move arch configs from configuration.sh to separate arm64 and armhf config files
AR-33 - Revision numbers for beta builds changed to day_in_the_year
AR-34 - Patches support linked patches
AR-35 - Break meson64 family into gxbb and gxl
AR-36 - Add Nanopineo2 Black
AR-38 - Upgrade option from old branches to new one via armbian-config
AR-41 - Show full timezone info
AR-43 - Merge Odroid N2 to meson64
AR-44 - Enable FORCE_BOOTSCRIPT_UPDATE for all builds
2019-11-19 23:25:39 +01:00

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Diff

From a6b5eb09bddbd0c331f41fefa2fd2f71a2cf9455 Mon Sep 17 00:00:00 2001
From: Vasily Khoruzhick <anarsoul@gmail.com>
Date: Tue, 24 Apr 2018 22:21:10 -0700
Subject: [PATCH 036/146] sun4i-gpadc-iio: ignore zero samples to avoid force
poweroff when reading first sample
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
---
drivers/iio/adc/sun4i-gpadc-iio.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/iio/adc/sun4i-gpadc-iio.c b/drivers/iio/adc/sun4i-gpadc-iio.c
index fdfa01bad325..68256e73a4d2 100644
--- a/drivers/iio/adc/sun4i-gpadc-iio.c
+++ b/drivers/iio/adc/sun4i-gpadc-iio.c
@@ -751,6 +751,12 @@ static int sun4i_gpadc_get_temp(void *data, int *temp)
if (sun4i_gpadc_temp_read(info->indio_dev, &val, info->sensor_id))
return -ETIMEDOUT;
+ /* Ignore first sample which is always zero. 0 is either too
+ * cold or too hot, so we can safely ignore it
+ */
+ if (val == 0)
+ return -ETIMEDOUT;
+
sun4i_gpadc_temp_scale(info->indio_dev, &scale);
sun4i_gpadc_temp_offset(info->indio_dev, &offset);
--
2.17.1