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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2007-05-25 15:50:24 -0400
committerJeff Garzik <jeff@garzik.org>2007-07-10 21:14:19 -0400
commit15ce09432a4399e61b57f2ceb564522d6534c15f (patch)
tree4ba7528880c6fd5b72904db23bdd3e1b2da07b96 /drivers/ata/pata_sis.c
parent45a66c1c3ff88e8050dd25e81bafdf79a12a8042 (diff)
pata_sis: FIFO whack
If you are using a SiS controller and the BIOS didn't set it up then the FIFO may be left active when we try and set up the CD. Not convinced this matters but I'd prefer to be safe Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/ata/pata_sis.c')
-rw-r--r--drivers/ata/pata_sis.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/ata/pata_sis.c b/drivers/ata/pata_sis.c
index 2b4508206a6c..657b1ee2f5c1 100644
--- a/drivers/ata/pata_sis.c
+++ b/drivers/ata/pata_sis.c
@@ -149,6 +149,9 @@ static int sis_pre_reset(struct ata_port *ap, unsigned long deadline)
149 if (!pci_test_config_bits(pdev, &sis_enable_bits[ap->port_no])) 149 if (!pci_test_config_bits(pdev, &sis_enable_bits[ap->port_no]))
150 return -ENOENT; 150 return -ENOENT;
151 151
152 /* Clear the FIFO settings. We can't enable the FIFO until
153 we know we are poking at a disk */
154 pci_write_config_byte(pdev, 0x4B, 0);
152 return ata_std_prereset(ap, deadline); 155 return ata_std_prereset(ap, deadline);
153} 156}
154 157