Stable Archive on lore.kernel.org
 help / color / Atom feed
* patch "iio: accel: adxl372: Perform a reset at start up" added to staging-linus
@ 2019-10-10  9:20 gregkh
  0 siblings, 0 replies; only message in thread
From: gregkh @ 2019-10-10  9:20 UTC (permalink / raw)
  To: stefan.popa, Jonathan.Cameron, Stable


This is a note to let you know that I've just added the patch titled

    iio: accel: adxl372: Perform a reset at start up

to my staging git tree which can be found at
    git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git
in the staging-linus branch.

The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the
next -rc kernel release.

If you have any questions about this process, please let me know.


From d9a997bd4d762d5bd8cc548d762902f58b5e0a74 Mon Sep 17 00:00:00 2001
From: Stefan Popa <stefan.popa@analog.com>
Date: Tue, 10 Sep 2019 17:44:46 +0300
Subject: iio: accel: adxl372: Perform a reset at start up

We need to perform a reset a start up to make sure that the chip is in a
consistent state. This reset also disables all the interrupts which
should only be enabled together with the iio buffer. Not doing this, was
sometimes causing unwanted interrupts to trigger.

Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Fixes: f4f55ce38e5f ("iio:adxl372: Add FIFO and interrupts support")
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 drivers/iio/accel/adxl372.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/iio/accel/adxl372.c b/drivers/iio/accel/adxl372.c
index fbad4b45fe42..67b8817995c0 100644
--- a/drivers/iio/accel/adxl372.c
+++ b/drivers/iio/accel/adxl372.c
@@ -575,6 +575,14 @@ static int adxl372_setup(struct adxl372_state *st)
 		return -ENODEV;
 	}
 
+	/*
+	 * Perform a software reset to make sure the device is in a consistent
+	 * state after start up.
+	 */
+	ret = regmap_write(st->regmap, ADXL372_RESET, ADXL372_RESET_CODE);
+	if (ret < 0)
+		return ret;
+
 	ret = adxl372_set_op_mode(st, ADXL372_STANDBY);
 	if (ret < 0)
 		return ret;
-- 
2.23.0



^ permalink raw reply	[flat|nested] only message in thread

only message in thread, back to index

Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-10-10  9:20 patch "iio: accel: adxl372: Perform a reset at start up" added to staging-linus gregkh

Stable Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/stable/0 stable/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 stable stable/ https://lore.kernel.org/stable \
		stable@vger.kernel.org stable@archiver.kernel.org
	public-inbox-index stable

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.stable


AGPL code for this site: git clone https://public-inbox.org/ public-inbox