Patch "iio: proximity: as3935: fix iio_trigger_poll issue" has been added to the 4.9-stable tree

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

iio: proximity: as3935: fix iio_trigger_poll issue

to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
iio-proximity-as3935-fix-iio_trigger_poll-issue.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Matt Ranostay <[email protected]>
Date: Thu, 4 May 2017 17:32:19 -0700
Subject: iio: proximity: as3935: fix iio_trigger_poll issue

From: Matt Ranostay <[email protected]>

commit 9122b54f266ddee09654fe3fbc503c1a60f4a01c upstream.

Using iio_trigger_poll() can oops when multiple interrupts happen before the first is handled.

Use iio_trigger_poll_chained() instead and use the timestamp when processed, since it will be in theory be 2 ms max latency.

---
 drivers/iio/proximity/as3935.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

@@ -215,7 +215,7 @@ static irqreturn_t as3935_trigger_handle
 
 	st->buffer[0] = val & AS3935_DATA_MASK;
 	iio_push_to_buffers_with_timestamp(indio_dev, &st->buffer,
-					   pf->timestamp);
+					   iio_get_time_ns(indio_dev));
 err_read:
 	iio_trigger_notify_done(indio_dev->trig);
 

@@ -244,7 +244,7 @@ static void as3935_event_work(struct wor
 
 	switch (val) {
 	case AS3935_EVENT_INT:
-		iio_trigger_poll(st->trig);
+		iio_trigger_poll_chained(st->trig);
 		break;
 	case AS3935_NOISE_INT:
 		dev_warn(&st->spi->dev, "noise level is too high\n");

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/iio-proximity-as3935-fix-as3935_int-mask.patch queue-4.9/iio-proximity-as3935-fix-iio_trigger_poll-issue.patch