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iio: fix a leak due to improper use of anon_inode_getfd()

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it can fail and in that case ->release() will *not* be called...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2011-11-21 17:25:37 -05:00
parent c332c10c01
commit b464133679
1 changed files with 9 additions and 1 deletions
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10
drivers/staging/iio/industrialio-core.c
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@ -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)