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 --- 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
