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| author | Peter Meerwald <pmeerw@pmeerw.net> | 2014-10-01 21:59:00 +0100 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2014-02-08 10:06:22 +0000 |
| commit | f25330f63edd8e2d02ca76ed43fc852d4d76bb12 (patch) | |
| tree | f0b27bfe90a8958df46870f750081d069abadd9f /drivers/iio | |
| parent | 6b89db36b3ab7c4b99027873e1de4be8d07387d4 (diff) | |
| download | linux-f25330f63edd8e2d02ca76ed43fc852d4d76bb12.tar.gz linux-f25330f63edd8e2d02ca76ed43fc852d4d76bb12.tar.bz2 linux-f25330f63edd8e2d02ca76ed43fc852d4d76bb12.zip | |
iio:magnetometer:mag3110: Report busy in _read_raw() / write_raw() when buffer is enabled
individual reads are not permitted concurrently with buffered reads
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/magnetometer/mag3110.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/iio/magnetometer/mag3110.c b/drivers/iio/magnetometer/mag3110.c index 4b65b6d3bdb1..b88cb44f87ce 100644 --- a/drivers/iio/magnetometer/mag3110.c +++ b/drivers/iio/magnetometer/mag3110.c @@ -154,6 +154,9 @@ static int mag3110_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: + if (iio_buffer_enabled(indio_dev)) + return -EBUSY; + switch (chan->type) { case IIO_MAGN: /* in 0.1 uT / LSB */ ret = mag3110_read(data, buffer); @@ -199,6 +202,9 @@ static int mag3110_write_raw(struct iio_dev *indio_dev, struct mag3110_data *data = iio_priv(indio_dev); int rate; + if (iio_buffer_enabled(indio_dev)) + return -EBUSY; + switch (mask) { case IIO_CHAN_INFO_SAMP_FREQ: rate = mag3110_get_samp_freq_index(data, val, val2); |