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| author |   Bjorn Helgaas <bhelgaas@google.com> | 2012-06-16 14:40:22 -0600 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2012-06-16 14:40:22 -0600 |
| commit | fbebb9fd22581b6422d60669c4ff86ce99d6cdba (patch) | |
| tree | f7063ec22814ee7782d1ccdb6f8653404d6714c8 /drivers/pci/quirks.c | |
| parent | Linux 3.5-rc2 (diff) | |
| download | linux-dev-fbebb9fd22581b6422d60669c4ff86ce99d6cdba.tar.xz linux-dev-fbebb9fd22581b6422d60669c4ff86ce99d6cdba.zip | |
PCI: add infrastructure for devices with broken INTx masking
pci_intx_mask_supported() assumes INTx masking is supported if the
PCI_COMMAND_INTX_DISABLE bit is writable. But when that bit is set,
some devices don't actually mask INTx or update PCI_STATUS_INTERRUPT
as we expect.
This patch adds a way for quirks to identify these broken devices.
[bhelgaas: split out from Chelsio quirk addition]
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/quirks.c')
| -rw-r--r-- | drivers/pci/quirks.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 2a7521677541..cc13415416d7 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -2929,6 +2929,16 @@ static void __devinit disable_igfx_irq(struct pci_dev *dev) DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0102, disable_igfx_irq); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x010a, disable_igfx_irq); +/* + * Some devices may pass our check in pci_intx_mask_supported if + * PCI_COMMAND_INTX_DISABLE works though they actually do not properly + * support this feature. + */ +static void __devinit quirk_broken_intx_masking(struct pci_dev *dev) +{ + dev->broken_intx_masking = 1; +} + static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f, struct pci_fixup *end) { |