summaryrefslogtreecommitdiff
path: root/drivers/staging
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/staging')
-rw-r--r--drivers/staging/iio/industrialio-core.c19
1 files changed, 9 insertions, 10 deletions
diff --git a/drivers/staging/iio/industrialio-core.c b/drivers/staging/iio/industrialio-core.c
index 26564094e33b..aec9311b108c 100644
--- a/drivers/staging/iio/industrialio-core.c
+++ b/drivers/staging/iio/industrialio-core.c
@@ -242,25 +242,24 @@ static const struct file_operations iio_event_chrdev_fileops = {
static int iio_event_getfd(struct iio_dev *indio_dev)
{
+ struct iio_event_interface *ev_int = indio_dev->event_interface;
int fd;
- if (indio_dev->event_interface == NULL)
+ if (ev_int == NULL)
return -ENODEV;
- mutex_lock(&indio_dev->event_interface->event_list_lock);
- if (test_and_set_bit(IIO_BUSY_BIT_POS,
- &indio_dev->event_interface->flags)) {
- mutex_unlock(&indio_dev->event_interface->event_list_lock);
+ mutex_lock(&ev_int->event_list_lock);
+ if (test_and_set_bit(IIO_BUSY_BIT_POS, &ev_int->flags)) {
+ mutex_unlock(&ev_int->event_list_lock);
return -EBUSY;
}
- mutex_unlock(&indio_dev->event_interface->event_list_lock);
+ mutex_unlock(&ev_int->event_list_lock);
fd = anon_inode_getfd("iio:event",
- &iio_event_chrdev_fileops,
- indio_dev->event_interface, O_RDONLY);
+ &iio_event_chrdev_fileops, ev_int, O_RDONLY);
if (fd < 0) {
- mutex_lock(&indio_dev->event_interface->event_list_lock);
+ mutex_lock(&ev_int->event_list_lock);
clear_bit(IIO_BUSY_BIT_POS, &ev_int->flags);
- mutex_unlock(&indio_dev->event_interface->event_list_lock);
+ mutex_unlock(&ev_int->event_list_lock);
}
return fd;
}