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authorBrian Masney <masneyb@onstation.org>2016-09-26 20:20:20 -0400
committerJonathan Cameron <jic23@kernel.org>2016-10-01 14:57:04 +0100
commit00053566385e3e7a2f81f0fd2fa09bccce1589f2 (patch)
tree7d33515d97b4103e89a94a1db06dee9c55efa8d6 /drivers
parent5611cd6fc61dbccdba61656bea9c5c1634b51e46 (diff)
staging: iio: isl29018: check if the chip is in a suspended state
Add a check to isl29018_write_raw() to ensure that the chip is not in a suspended state. This makes the code consistent with what is present in isl29018_read_raw(). Signed-off-by: Brian Masney <masneyb@onstation.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/staging/iio/light/isl29018.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/staging/iio/light/isl29018.c b/drivers/staging/iio/light/isl29018.c
index 3a4d79d7e23c..51226bd337c5 100644
--- a/drivers/staging/iio/light/isl29018.c
+++ b/drivers/staging/iio/light/isl29018.c
@@ -355,6 +355,10 @@ static int isl29018_write_raw(struct iio_dev *indio_dev,
int ret = -EINVAL;
mutex_lock(&chip->lock);
+ if (chip->suspended) {
+ ret = -EBUSY;
+ goto write_done;
+ }
switch (mask) {
case IIO_CHAN_INFO_CALIBSCALE:
if (chan->type == IIO_LIGHT) {
@@ -374,8 +378,9 @@ static int isl29018_write_raw(struct iio_dev *indio_dev,
default:
break;
}
- mutex_unlock(&chip->lock);
+write_done:
+ mutex_unlock(&chip->lock);
return ret;
}