diff options
| author | Brice Goglin <brice@myri.com> | 2008-05-09 02:19:29 +0200 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2008-05-13 01:30:29 -0400 |
| commit | eca3fd83436853483837f010d9c3fefafa46a15c (patch) | |
| tree | c75d964144f366486ade050f643ec0980203b25f | |
| parent | 99f5f87eb689c5766fa2c101fe75310a7f9ba3cd (diff) | |
myri10ge: fix potential infinite loop in enable_ecrc
Fix another potential for an infinite loop while looking for the
root port in myri10ge_enable_ecrc().
Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Andrew Gallatin <gallatin@myri.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| -rw-r--r-- | drivers/net/myri10ge/myri10ge.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c index 9165a55f811..6526214f69d 100644 --- a/drivers/net/myri10ge/myri10ge.c +++ b/drivers/net/myri10ge/myri10ge.c @@ -2657,13 +2657,14 @@ static void myri10ge_enable_ecrc(struct myri10ge_priv *mgp) ext_type = (val & PCI_EXP_FLAGS_TYPE) >> 4; if (ext_type != PCI_EXP_TYPE_ROOT_PORT) { if (myri10ge_ecrc_enable > 1) { - struct pci_dev *old_bridge = bridge; + struct pci_dev *prev_bridge, *old_bridge = bridge; /* Walk the hierarchy up to the root port * where ECRC has to be enabled */ do { + prev_bridge = bridge; bridge = bridge->bus->self; - if (!bridge) { + if (!bridge || prev_bridge == bridge) { dev_err(dev, "Failed to find root port" " to force ECRC\n"); |