[PATCH 06/15] [MTI] Enable PIIX4 PCI2.1 compliancy on Malta

[Raghu Gandham <raghu@mips.com>]

From: Chris Dearman <chris@mips.com>

Signed-off-by: Chris Dearman <chris@mips.com>
---

 arch/mips/mti-malta/malta-setup.c |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/arch/mips/mti-malta/malta-setup.c b/arch/mips/mti-malta/malta-setup.c
index dc78b89..69f5f9c 100644
--- a/arch/mips/mti-malta/malta-setup.c
+++ b/arch/mips/mti-malta/malta-setup.c
@@ -223,3 +223,14 @@ void __init plat_mem_setup(void)
 	board_be_init = malta_be_init;
 	board_be_handler = malta_be_handler;
 }
+/* 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);