From 6fea8a426b67455a58b59964cee905754ab77497 Mon Sep 17 00:00:00 2001 From: Alison Schofield Date: Tue, 24 May 2016 12:18:43 -0700 Subject: [PATCH] iio: adc: ad7887: use iio helper function to guarantee direct mode Replace the code that guarantees the device stays in direct mode with iio_device_claim_direct_mode() which does same. Signed-off-by: Alison Schofield Acked-by: Daniel Baluta Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7887.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/iio/adc/ad7887.c b/drivers/iio/adc/ad7887.c index 2d3c397..ee2ccc1 100644 --- a/drivers/iio/adc/ad7887.c +++ b/drivers/iio/adc/ad7887.c @@ -156,12 +156,11 @@ static int ad7887_read_raw(struct iio_dev *indio_dev, switch (m) { case IIO_CHAN_INFO_RAW: - mutex_lock(&indio_dev->mlock); - if (iio_buffer_enabled(indio_dev)) - ret = -EBUSY; - else - ret = ad7887_scan_direct(st, chan->address); - mutex_unlock(&indio_dev->mlock); + ret = iio_device_claim_direct_mode(indio_dev); + if (ret) + return ret; + ret = ad7887_scan_direct(st, chan->address); + iio_device_release_direct_mode(indio_dev); if (ret < 0) return ret; -- 2.7.4