diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 2009-10-12 22:54:47 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2009-11-02 12:00:04 +0100 |
| commit | a951f2829adba3f2945172b740528fce4366907d (patch) | |
| tree | a36449474bb1524bedbd1cc684cec7c474982bde /arch | |
| parent | c70887555143fdede9595df4c7a598676922f107 (diff) | |
| download | linux-a951f2829adba3f2945172b740528fce4366907d.tar.bz2 | |
MIPS: Malta: Enable PCI 2.1 compatibility in PIIX4
Based on original patch by Chris Dearman <chris@mips.com>.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/mti-malta/malta-pci.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/mips/mti-malta/malta-pci.c b/arch/mips/mti-malta/malta-pci.c index b9743190609a..efdb4f66ffcf 100644 --- a/arch/mips/mti-malta/malta-pci.c +++ b/arch/mips/mti-malta/malta-pci.c @@ -241,3 +241,16 @@ void __init mips_pcibios_init(void) register_pci_controller(controller); } + +/* Enable PCI 2.1 compatibility in PIIX4 */ +static void __init quirk_dlcsetup(struct pci_dev *dev) +{ + u8 odlc, ndlc; + (void) pci_read_config_byte(dev, 0x82, &odlc); + /* Enable passive releases and delayed transaction */ + ndlc = odlc | 7; + (void) pci_write_config_byte(dev, 0x82, ndlc); +} + +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_0, + quirk_dlcsetup); |