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>
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@ -2657,13 +2657,14 @@ static void myri10ge_enable_ecrc(struct myri10ge_priv *mgp)
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ext_type = (val & PCI_EXP_FLAGS_TYPE) >> 4;
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if (ext_type != PCI_EXP_TYPE_ROOT_PORT) {
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if (myri10ge_ecrc_enable > 1) {
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struct pci_dev *old_bridge = bridge;
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struct pci_dev *prev_bridge, *old_bridge = bridge;
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/* Walk the hierarchy up to the root port
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* where ECRC has to be enabled */
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do {
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prev_bridge = bridge;
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bridge = bridge->bus->self;
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if (!bridge) {
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if (!bridge || prev_bridge == bridge) {
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dev_err(dev,
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"Failed to find root port"
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" to force ECRC\n");
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