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* [PATCH] pata_sis: FIFO whack
@ 2007-05-25 19:50 Alan Cox
  2007-05-28 22:01 ` Jeff Garzik
  2007-07-11  1:14 ` Jeff Garzik
  0 siblings, 2 replies; 3+ messages in thread
From: Alan Cox @ 2007-05-25 19:50 UTC (permalink / raw)
  To: jeff, linux-kernel

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>

diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla-2.6.22-rc2-mm1/drivers/ata/pata_sis.c linux-2.6.22-rc2-mm1/drivers/ata/pata_sis.c
--- linux.vanilla-2.6.22-rc2-mm1/drivers/ata/pata_sis.c	2007-05-25 17:39:06.000000000 +0100
+++ linux-2.6.22-rc2-mm1/drivers/ata/pata_sis.c	2007-05-25 18:22:21.000000000 +0100
@@ -149,6 +149,9 @@
 	if (!pci_test_config_bits(pdev, &sis_enable_bits[ap->port_no]))
 		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);
 }
 

^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2007-07-11  1:14 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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2007-05-25 19:50 [PATCH] pata_sis: FIFO whack Alan Cox
2007-05-28 22:01 ` Jeff Garzik
2007-07-11  1:14 ` Jeff Garzik

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