mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-05 18:39:59 +00:00
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>
This commit is contained in:
parent
3b20b2dc5f
commit
7539a613c6
1 changed files with 21 additions and 0 deletions
|
@ -3327,6 +3327,26 @@ static void myri10ge_select_firmware(struct myri10ge_priv *mgp)
|
||||||
mgp->fw_name);
|
mgp->fw_name);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
static void myri10ge_mask_surprise_down(struct pci_dev *pdev)
|
||||||
|
{
|
||||||
|
struct pci_dev *bridge = pdev->bus->self;
|
||||||
|
int cap;
|
||||||
|
u32 mask;
|
||||||
|
|
||||||
|
if (bridge == NULL)
|
||||||
|
return;
|
||||||
|
|
||||||
|
cap = pci_find_ext_capability(bridge, PCI_EXT_CAP_ID_ERR);
|
||||||
|
if (cap) {
|
||||||
|
/* a sram parity error can cause a surprise link
|
||||||
|
* down; since we expect and can recover from sram
|
||||||
|
* parity errors, mask surprise link down events */
|
||||||
|
pci_read_config_dword(bridge, cap + PCI_ERR_UNCOR_MASK, &mask);
|
||||||
|
mask |= 0x20;
|
||||||
|
pci_write_config_dword(bridge, cap + PCI_ERR_UNCOR_MASK, mask);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
#ifdef CONFIG_PM
|
#ifdef CONFIG_PM
|
||||||
static int myri10ge_suspend(struct pci_dev *pdev, pm_message_t state)
|
static int myri10ge_suspend(struct pci_dev *pdev, pm_message_t state)
|
||||||
{
|
{
|
||||||
|
@ -3845,6 +3865,7 @@ static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
|
||||||
goto abort_with_enabled;
|
goto abort_with_enabled;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
myri10ge_mask_surprise_down(pdev);
|
||||||
pci_set_master(pdev);
|
pci_set_master(pdev);
|
||||||
dac_enabled = 1;
|
dac_enabled = 1;
|
||||||
status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
|
status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
|
||||||
|
|
Loading…
Reference in a new issue