3.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jiang Liu <liuj97@xxxxxxxxx>
commit 343df771e671d821478dd3ef525a0610b808dbf8 upstream.
After calling device_register(&bridge->dev), the bridge is reference-
counted, and it is illegal to call kfree() on it except in the release
function.
[bhelgaas: changelog, use put_device() after device_register() failure]
Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxx>
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/pci/probe.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1694,12 +1694,16 @@ struct pci_bus *pci_create_root_bus(stru
bridge->dev.release = pci_release_bus_bridge_dev;
dev_set_name(&bridge->dev, "pci%04x:%02x", pci_domain_nr(b), bus);
error = pcibios_root_bridge_prepare(bridge);
- if (error)
- goto bridge_dev_reg_err;
+ if (error) {
+ kfree(bridge);
+ goto err_out;
+ }
error = device_register(&bridge->dev);
- if (error)
- goto bridge_dev_reg_err;
+ if (error) {
+ put_device(&bridge->dev);
+ goto err_out;
+ }
b->bridge = get_device(&bridge->dev);
device_enable_async_suspend(b->bridge);
pci_set_bus_of_node(b);
@@ -1753,8 +1757,6 @@ struct pci_bus *pci_create_root_bus(stru
class_dev_reg_err:
put_device(&bridge->dev);
device_unregister(&bridge->dev);
-bridge_dev_reg_err:
- kfree(bridge);
err_out:
kfree(b);
return NULL;
--
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