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-rw-r--r--drivers/staging/iio/industrialio-core.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/staging/iio/industrialio-core.c b/drivers/staging/iio/industrialio-core.c
index 326e967d54ef..26564094e33b 100644
--- a/drivers/staging/iio/industrialio-core.c
+++ b/drivers/staging/iio/industrialio-core.c
@@ -242,6 +242,8 @@ static const struct file_operations iio_event_chrdev_fileops = {
static int iio_event_getfd(struct iio_dev *indio_dev)
{
+ int fd;
+
if (indio_dev->event_interface == NULL)
return -ENODEV;
@@ -252,9 +254,15 @@ static int iio_event_getfd(struct iio_dev *indio_dev)
return -EBUSY;
}
mutex_unlock(&indio_dev->event_interface->event_list_lock);
- return anon_inode_getfd("iio:event",
+ fd = anon_inode_getfd("iio:event",
&iio_event_chrdev_fileops,
indio_dev->event_interface, O_RDONLY);
+ if (fd < 0) {
+ mutex_lock(&indio_dev->event_interface->event_list_lock);
+ clear_bit(IIO_BUSY_BIT_POS, &ev_int->flags);
+ mutex_unlock(&indio_dev->event_interface->event_list_lock);
+ }
+ return fd;
}
static int __init iio_init(void)