Commit 15ce0943 authored by Alan Cox's avatar Alan Cox Committed by Jeff Garzik

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: default avatarAlan Cox <alan@redhat.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent 45a66c1c
...@@ -149,6 +149,9 @@ static int sis_pre_reset(struct ata_port *ap, unsigned long deadline) ...@@ -149,6 +149,9 @@ static int sis_pre_reset(struct ata_port *ap, unsigned long deadline)
if (!pci_test_config_bits(pdev, &sis_enable_bits[ap->port_no])) if (!pci_test_config_bits(pdev, &sis_enable_bits[ap->port_no]))
return -ENOENT; return -ENOENT;
/* Clear the FIFO settings. We can't enable the FIFO until
we know we are poking at a disk */
pci_write_config_byte(pdev, 0x4B, 0);
return ata_std_prereset(ap, deadline); return ata_std_prereset(ap, deadline);
} }
......
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