Messages in this thread Patch in this message | | | From | "Christian König" <> | Subject | [PATCH] PCI: stop crashing in pci_release_resource v2 | Date | Wed, 21 Feb 2018 10:07:15 +0100 |
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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@amd.com> CC: stable@vger.kernel.org --- 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
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