lkml.org 
[lkml]   [2017]   [Aug]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH net] PCI: fix the return value for the pci_find_pcie_root_port()
Date
The pci_find_pcie_root_port() would return NULL if the given
dev is already a Root Port, it looks like unfriendly to the
PCIe Root Port device, Thierry and Bjorn suggest to let this
function return the given dev under this circumstances.

Fixes: 0e405232871d6 ("PCI: fix oops when try to find Root Port for a PCI device")
Suggested-by: Thierry Reding <thierry.reding@gmail.com>
Suggested-by: Bjorn Helgaas <helgaas@kernel.org>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
---
drivers/pci/pci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 7e2022f..352bb53 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -514,7 +514,7 @@ struct resource *pci_find_resource(struct pci_dev *dev, struct resource *res)
*/
struct pci_dev *pci_find_pcie_root_port(struct pci_dev *dev)
{
- struct pci_dev *bridge, *highest_pcie_bridge = NULL;
+ struct pci_dev *bridge, *highest_pcie_bridge = dev;

bridge = pci_upstream_bridge(dev);
while (bridge && pci_is_pcie(bridge)) {
--
1.8.3.1

\
 
 \ /
  Last update: 2017-08-17 04:26    [W:0.096 / U:16.272 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site