diff options
| author | David S. Miller <davem@davemloft.net> | 2012-10-02 23:02:10 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-10-02 23:02:10 -0400 |
| commit | 954f9ac43b87b44152b8c21163cefd466a87145e (patch) | |
| tree | 31c4197f975c66c96976948663e6ce844900b41a /drivers/pci/quirks.c | |
| parent | 1b62ca7bf5775bed048032b7e779561e1fe66aa0 (diff) | |
| parent | 7fe0b14b725d6d09a1d9e1409bd465cb88b587f9 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
There's a Niagara 2 memcpy fix in this tree and I have
a Kconfig fix from Dave Jones which requires the sparc-next
changes which went upstream yesterday.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/pci/quirks.c')
| -rw-r--r-- | drivers/pci/quirks.c | 31 |
1 files changed, 25 insertions, 6 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 51553179e967..7a451ff56ecc 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3081,17 +3081,36 @@ static int reset_intel_generic_dev(struct pci_dev *dev, int probe) static int reset_intel_82599_sfp_virtfn(struct pci_dev *dev, int probe) { - int pos; + int i; + u16 status; - pos = pci_find_capability(dev, PCI_CAP_ID_EXP); - if (!pos) - return -ENOTTY; + /* + * http://www.intel.com/content/dam/doc/datasheet/82599-10-gbe-controller-datasheet.pdf + * + * The 82599 supports FLR on VFs, but FLR support is reported only + * in the PF DEVCAP (sec 9.3.10.4), not in the VF DEVCAP (sec 9.5). + * Therefore, we can't use pcie_flr(), which checks the VF DEVCAP. + */ if (probe) return 0; - pci_write_config_word(dev, pos + PCI_EXP_DEVCTL, - PCI_EXP_DEVCTL_BCR_FLR); + /* Wait for Transaction Pending bit clean */ + for (i = 0; i < 4; i++) { + if (i) + msleep((1 << (i - 1)) * 100); + + pcie_capability_read_word(dev, PCI_EXP_DEVSTA, &status); + if (!(status & PCI_EXP_DEVSTA_TRPND)) + goto clear; + } + + dev_err(&dev->dev, "transaction is not cleared; " + "proceeding with reset anyway\n"); + +clear: + pcie_capability_set_word(dev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_BCR_FLR); + msleep(100); return 0; |