[PATCH v2 11/22] PCI, drm: Kill pci_root_buses in alpha hose setting

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Signed-off-by: Yinghai Lu <yinghai@xxxxxxxxxx>
Cc: David Airlie <airlied@xxxxxxxx>
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
---
 drivers/gpu/drm/drm_fops.c |   10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c
index 133b413..b92a9cc 100644
--- a/drivers/gpu/drm/drm_fops.c
+++ b/drivers/gpu/drm/drm_fops.c
@@ -356,9 +356,13 @@ static int drm_open_helper(struct inode *inode, struct file *filp,
 			pci_dev_put(pci_dev);
 		}
 		if (!dev->hose) {
-			struct pci_bus *b = pci_bus_b(pci_root_buses.next);
-			if (b)
-				dev->hose = b->sysdata;
+			struct pci_host_bridge *host_bridge;
+
+			host_bridge = pci_next_host_bridge(NULL);
+			if (host_bridge) {
+				dev->hose = host_bridge->bus->sysdata;
+				put_device(&host_bridge->dev);
+			}
 		}
 	}
 #endif
-- 
1.7.10.4

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