The error was introduced in commit b4641336 ("iio: fix a leak due to
improper use of anon_inode_getfd()").
Looks like the code wasn't even compile tested. Instead of just fixing the
error I changed the function a bit to make it nicer.
Cc: Jonathan Cameron <jic23@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxx>
Cc: linux-iio@xxxxxxxxxxxxxxx
Cc: devel@xxxxxxxxxxxxxxxxxxxx
Signed-off-by: Sasha Levin <levinsasha928@xxxxxxxxx>
---
drivers/staging/iio/industrialio-core.c | 21 ++++++++++-----------
1 files changed, 10 insertions(+), 11 deletions(-)
diff --git a/drivers/staging/iio/industrialio-core.c b/drivers/staging/iio/industrialio-core.c
index 2656409..5367914 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);
- fd = anon_inode_getfd("iio:event",
- &iio_event_chrdev_fileops,
- indio_dev->event_interface, O_RDONLY);
+ mutex_unlock(&ev_int->event_list_lock);
+ fd = anon_inode_getfd("iio:event", &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;
}
--
1.7.8.rc3
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