On Wed, Feb 21, 2018 at 10:07:15AM +0100, Christian König wrote: > Is it entirely possible that the BIOS wasn't able to assign resources to > a device. In this case don't crash in pci_release_resource() when we try > to resize the resource. > > v2: keep printing the info that we try to release the BAR > > Signed-off-by: Christian König <christian.koenig@xxxxxxx> > CC: stable@xxxxxxxxxxxxxxx I was hoping for a dmesg snippet, but I added a Fixes: tag and applied this to for-linus for v4.16. > --- > drivers/pci/setup-res.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c > index e815111f3f81..c0f091614805 100644 > --- a/drivers/pci/setup-res.c > +++ b/drivers/pci/setup-res.c > @@ -402,6 +402,10 @@ void pci_release_resource(struct pci_dev *dev, int resno) > struct resource *res = dev->resource + resno; > > dev_info(&dev->dev, "BAR %d: releasing %pR\n", resno, res); > + > + if (!res->parent) > + return; > + > release_resource(res); > res->end = resource_size(res) - 1; > res->start = 0; > -- > 2.14.1 >
