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MIPS: Malta: Enable PCI 2.1 compatibility in PIIX4

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Based on original patch by Chris Dearman <chris@mips.com>.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2009-10-12 22:54:47 +02:00
parent c708875551
commit a951f2829a
1 changed files with 13 additions and 0 deletions
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13
arch/mips/mti-malta/malta-pci.c
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@ -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);