Re: FAILED: patch "[PATCH] iio: adc: hx711: fix bug in sampling of data" failed to apply to 4.14-stable tree

[Sasha Levin <sashal@kernel.org>]

On Mon, Oct 14, 2019 at 05:01:26PM +0200, gregkh@linuxfoundation.org wrote:
>
>The patch below does not apply to the 4.14-stable tree.
>If someone wants it applied there, or to any other stable or longterm
>tree, then please email the backport, including the original git commit
>id to <stable@vger.kernel.org>.
>
>thanks,
>
>greg k-h
>
>------------------ original commit in Linus's tree ------------------
>
>From 4043ecfb5fc4355a090111e14faf7945ff0fdbd5 Mon Sep 17 00:00:00 2001
>From: Andreas Klinger <ak@it-klinger.de>
>Date: Mon, 9 Sep 2019 14:37:21 +0200
>Subject: [PATCH] iio: adc: hx711: fix bug in sampling of data
>
>Fix bug in sampling function hx711_cycle() when interrupt occures while
>PD_SCK is high. If PD_SCK is high for at least 60 us power down mode of
>the sensor is entered which in turn leads to a wrong measurement.
>
>Switch off interrupts during a PD_SCK high period and move query of DOUT
>to the latest point of time which is at the end of PD_SCK low period.
>
>This bug exists in the driver since it's initial addition. The more
>interrupts on the system the higher is the probability that it happens.
>
>Fixes: c3b2fdd0ea7e ("iio: adc: hx711: Add IIO driver for AVIA HX711")
>Signed-off-by: Andreas Klinger <ak@it-klinger.de>
>Cc: <Stable@vger.kernel.org>
>Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

I've queued up this patch in addition: 461631face580 ("iio: hx711: add
delay until DOUT is ready") and queued both for 4.14. It's not needed on
older kernels.

-- 
Thanks,
Sasha