sis_66_set_dmamode() also handles early UDMA100 (SIS630 ET) but is
missing udma timing value for UDMA100.  According to sis5513, this
should be 0x8000.  This caused UDMA100 device to fail on pata_sis till
it downgrades to UDMA66 while it works fine on sis5513 at UDMA100.

Reported by Adam Blech.

Signed-off-by: Tejun Heo <redacted>
Cc: Adam Blech <redacted>
---
 drivers/ata/pata_sis.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/ata/pata_sis.c b/drivers/ata/pata_sis.c
index da3f720..3b5be77 100644
--- a/drivers/ata/pata_sis.c
+++ b/drivers/ata/pata_sis.c

@@ -376,8 +376,9 @@ static void sis_66_set_dmamode (struct ata_port *ap, struct ata_device *adev)
 	int drive_pci = sis_old_port_base(adev);
 	u16 timing;
 
+	/* MWDMA 0-2 and UDMA 0-5 */
 	const u16 mwdma_bits[] = { 0x008, 0x302, 0x301 };
-	const u16 udma_bits[]  = { 0xF000, 0xD000, 0xB000, 0xA000, 0x9000};
+	const u16 udma_bits[]  = { 0xF000, 0xD000, 0xB000, 0xA000, 0x9000, 0x8000 };
 
 	pci_read_config_word(pdev, drive_pci, &timing);