On Mon 7/24/2017 3:04 PM, Dan Carpenter <dan.carpen...@oracle.com> > -----Original Message----- > From: Dan Carpenter [mailto:dan.carpen...@oracle.com] > Sent: Monday, July 24, 2017 3:04 PM > To: Qiang Zhao <qiang.z...@nxp.com> > Cc: Leo Li <leoyang...@nxp.com>; linuxppc-dev@lists.ozlabs.org; kernel- > janit...@vger.kernel.org > Subject: Re: [PATCH 1/2] fsl/qe: NULL dereference on error in > ucc_of_parse_tdm() > > On Mon, Jul 24, 2017 at 02:24:14AM +0000, Qiang Zhao wrote: > > On Sat 7/22/2017 3:34 PM, Dan Carpenter <dan.carpen...@oracle.com> > wrote: > > > > > -----Original Message----- > > > From: Dan Carpenter [mailto:dan.carpen...@oracle.com] > > > Sent: Saturday, July 22, 2017 3:34 PM > > > To: Qiang Zhao <qiang.z...@nxp.com> > > > Cc: Leo Li <leoyang...@nxp.com>; linuxppc-dev@lists.ozlabs.org; > > > kernel- janit...@vger.kernel.org > > > Subject: [PATCH 1/2] fsl/qe: NULL dereference on error in > > > ucc_of_parse_tdm() > > > > > > If "pdev = of_find_device_by_node(np2);" fails then it would lead to > > > a NULL dereference. This function is called from probe() and we're > > > using managed resources so we can just return without doing a manual > cleanup. > > > > You mean it will be cleaned up automatically? > > Yes. At module unload.
Do you mean when insmod it as a module, and when this module is removed, it will be cleaned up automatically? Do I understand correctly? Well, how about build-in? Best Regards Qiang Zhao
