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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>
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1 changed files with 13 additions and 0 deletions
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@ -241,3 +241,16 @@ void __init mips_pcibios_init(void)
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register_pci_controller(controller);
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register_pci_controller(controller);
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}
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}
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/* Enable PCI 2.1 compatibility in PIIX4 */
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static void __init quirk_dlcsetup(struct pci_dev *dev)
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{
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u8 odlc, ndlc;
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(void) pci_read_config_byte(dev, 0x82, &odlc);
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/* Enable passive releases and delayed transaction */
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ndlc = odlc | 7;
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(void) pci_write_config_byte(dev, 0x82, ndlc);
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}
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DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_0,
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quirk_dlcsetup);
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