From: "Christian König" <ckoenig.leichtzumerken@gmail.com>
To: bhelgaas@google.com, linux-kernel@vger.kernel.org,
linux-pci@vger.kernel.org
Subject: [PATCH] PCI: stop crashing in pci_release_resource
Date: Tue, 20 Feb 2018 09:58:13 +0100 [thread overview]
Message-ID: <20180220085813.1897-1-christian.koenig@amd.com> (raw)
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.
Signed-off-by: Christian König <christian.koenig@amd.com>
CC: stable@vger.kernel.org
---
drivers/pci/setup-res.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
index e815111f3f81..fd72c87a9b72 100644
--- a/drivers/pci/setup-res.c
+++ b/drivers/pci/setup-res.c
@@ -401,6 +401,9 @@ void pci_release_resource(struct pci_dev *dev, int resno)
{
struct resource *res = dev->resource + resno;
+ if (!res->parent)
+ return;
+
dev_info(&dev->dev, "BAR %d: releasing %pR\n", resno, res);
release_resource(res);
res->end = resource_size(res) - 1;
--
2.14.1
next reply other threads:[~2018-02-20 8:58 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-20 8:58 Christian König [this message]
2018-02-20 14:04 ` [PATCH] PCI: stop crashing in pci_release_resource Andy Shevchenko
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