diff options
| author | Ian Abbott <abbotti@mev.co.uk> | 2017-06-16 19:35:34 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-07-15 13:04:41 +0200 |
| commit | eb844f27b7b2fefed8f801a45474d711f519f80e (patch) | |
| tree | ee8e41e32f05504f82263c134b520eedb8664a94 | |
| parent | ed53d437d6c954eb64ad78dc329b0e101030bd22 (diff) | |
staging: comedi: fix clean-up of comedi_class in comedi_init()
commit a9332e9ad09c2644c99058fcf6ae2f355e93ce74 upstream.
There is a clean-up bug in the core comedi module initialization
functions, `comedi_init()`. If the `comedi_num_legacy_minors` module
parameter is non-zero (and valid), it creates that many "legacy" devices
and registers them in SysFS. A failure causes the function to clean up
and return an error. Unfortunately, it fails to destroy the "comedi"
class that was created earlier. Fix it by adding a call to
`class_destroy(comedi_class)` at the appropriate place in the clean-up
sequence.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/comedi/comedi_fops.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c index 8deac8d9225d..13a3e505d4fc 100644 --- a/drivers/staging/comedi/comedi_fops.c +++ b/drivers/staging/comedi/comedi_fops.c @@ -2901,6 +2901,7 @@ static int __init comedi_init(void) dev = comedi_alloc_board_minor(NULL); if (IS_ERR(dev)) { comedi_cleanup_board_minors(); + class_destroy(comedi_class); cdev_del(&comedi_cdev); unregister_chrdev_region(MKDEV(COMEDI_MAJOR, 0), COMEDI_NUM_MINORS); |