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Merge branch 'topic/jan-intx-masking' into next 

* topic/jan-intx-masking:
  PCI: add Ralink RT2800 broken INTx masking quirk
  PCI: add Chelsio T310 10GbE NIC broken INTx masking quirk
  PCI: add infrastructure for devices with broken INTx masking
This commit is contained in:
Bjorn Helgaas 2012-06-18 12:14:16 -06:00
parent e822a00704 0bdb3b213a
commit 140217ae3f
3 changed files with 18 additions and 0 deletions
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3
drivers/pci/pci.c
View File

@ -2897,6 +2897,9 @@ bool pci_intx_mask_supported(struct pci_dev *dev)
bool mask_supported = false;
u16 orig, new;
if (dev->broken_intx_masking)
return false;
pci_cfg_access_lock(dev);
pci_read_config_word(dev, PCI_COMMAND, &orig);

14
drivers/pci/quirks.c
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@ -2929,6 +2929,20 @@ 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;
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CHELSIO, 0x0030,
quirk_broken_intx_masking);
DECLARE_PCI_FIXUP_HEADER(0x1814, 0x0601, /* Ralink RT2800 802.11n PCI */
quirk_broken_intx_masking);
static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f,
struct pci_fixup *end)
{

1
include/linux/pci.h
View File

@ -324,6 +324,7 @@ struct pci_dev {
unsigned int is_hotplug_bridge:1;
unsigned int __aer_firmware_first_valid:1;
unsigned int __aer_firmware_first:1;
unsigned int broken_intx_masking:1;
pci_dev_flags_t dev_flags;
atomic_t enable_cnt; /* pci_enable_device has been called */