myri10ge: Mask PCI Surprise Link Down Events
A SRAM parity error can cause a surprise link down. Since We can recover from SRAM parity errors, mask PCI surprise down events. Signed-off-by: Jon Mason <mason@myri.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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1 changed files with 21 additions and 0 deletions
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@ -3327,6 +3327,26 @@ static void myri10ge_select_firmware(struct myri10ge_priv *mgp)
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mgp->fw_name);
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}
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static void myri10ge_mask_surprise_down(struct pci_dev *pdev)
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{
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struct pci_dev *bridge = pdev->bus->self;
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int cap;
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u32 mask;
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if (bridge == NULL)
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return;
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cap = pci_find_ext_capability(bridge, PCI_EXT_CAP_ID_ERR);
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if (cap) {
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/* a sram parity error can cause a surprise link
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* down; since we expect and can recover from sram
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* parity errors, mask surprise link down events */
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pci_read_config_dword(bridge, cap + PCI_ERR_UNCOR_MASK, &mask);
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mask |= 0x20;
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pci_write_config_dword(bridge, cap + PCI_ERR_UNCOR_MASK, mask);
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}
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}
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#ifdef CONFIG_PM
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static int myri10ge_suspend(struct pci_dev *pdev, pm_message_t state)
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{
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@ -3845,6 +3865,7 @@ static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
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goto abort_with_enabled;
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}
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myri10ge_mask_surprise_down(pdev);
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pci_set_master(pdev);
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dac_enabled = 1;
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status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
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