From c70df20e31595cf696c8b4f50fc7d82b69f3dd5c Mon Sep 17 00:00:00 2001
From: Alison Schofield <amsfield22@gmail.com>
Date: Tue, 24 May 2016 12:16:23 -0700
Subject: [PATCH] iio: adc: ad7266: claim direct mode during sensor read
Driver was checking for direct mode but not locking it down.
Use iio_device_claim_direct_mode() to guarantee device stays
in direct mode.
Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Acked-by: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
---
drivers/iio/adc/ad7266.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/iio/adc/ad7266.c b/drivers/iio/adc/ad7266.c
index 21e19b60e2b98..01240aeeeab04 100644
--- a/drivers/iio/adc/ad7266.c
+++ b/drivers/iio/adc/ad7266.c
@@ -154,12 +154,11 @@ static int ad7266_read_raw(struct iio_dev *indio_dev,
switch (m) {
case IIO_CHAN_INFO_RAW:
- if (iio_buffer_enabled(indio_dev))
- return -EBUSY;
-
- ret = ad7266_read_single(st, val, chan->address);
+ ret = iio_device_claim_direct_mode(indio_dev);
if (ret)
return ret;
+ ret = ad7266_read_single(st, val, chan->address);
+ iio_device_release_direct_mode(indio_dev);
*val = (*val >> 2) & 0xfff;
if (chan->scan_type.sign == 's')
--
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