diff options
| author | Ian Abbott <abbotti@mev.co.uk> | 2013-08-20 11:50:19 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-20 07:45:11 -0800 |
| commit | bc049656c27b34c9b1f5f36ffa95f7a73b82c8a4 (patch) | |
| tree | 4d23d72881eba231d629b2bce6dd5bf5bf373c42 /drivers/usb | |
| parent | 5232a7194556c819b2cea0b8395895dc5a448aae (diff) | |
staging: comedi: pcmuio: fix possible NULL deref on detach
commit 2fd2bdfccae61efe18f6b92b6a45fbf936d75b48 upstream.
pcmuio_detach() is called by the comedi core even if pcmuio_attach()
returned an error, so `dev->private` might be `NULL`. Check for that
before dereferencing it.
Also, as pointed out by Dan Carpenter, there is no need to check the
pointer passed to `kfree()` is non-NULL, so remove that check.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
0 files changed, 0 insertions, 0 deletions