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| author | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2011-09-29 13:12:43 -0400 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2011-10-19 17:01:10 -0400 |
| commit | 4645bf306746106f805d2afa5330bf31df381626 (patch) | |
| tree | 5cd174f16d7035b366d5293d1d35a5cc27458721 /drivers | |
| parent | 72bf809a19d9fc97bfe39bb928149b5e0f202cb6 (diff) | |
| download | lwn-4645bf306746106f805d2afa5330bf31df381626.tar.gz lwn-4645bf306746106f805d2afa5330bf31df381626.zip | |
xen/pciback: Check if the device is found instead of blindly assuming so.
Just in case it is not found, don't try to dereference it.
[v1: Added WARN_ON, suggested by Jan Beulich <JBeulich@suse.com>]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/xen/xen-pciback/pci_stub.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/xen/xen-pciback/pci_stub.c b/drivers/xen/xen-pciback/pci_stub.c index 3cc3fbe5bf8d..8f06e1ed028c 100644 --- a/drivers/xen/xen-pciback/pci_stub.c +++ b/drivers/xen/xen-pciback/pci_stub.c @@ -220,6 +220,8 @@ void pcistub_put_pci_dev(struct pci_dev *dev) } spin_unlock_irqrestore(&pcistub_devices_lock, flags); + if (WARN_ON(!found_psdev)) + return; /*hold this lock for avoiding breaking link between * pcistub and xen_pcibk when AER is in processing |