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Commit a2bd6220 authored by Bartlomiej Zolnierkiewicz's avatar Bartlomiej Zolnierkiewicz Committed by Jeff Garzik
Browse files

pata_cmd64x: fix PIO setup 



Fix incorrect handling of recovery clocks value == 16 resulting
in overclocked recovery timings & potentially underclocked active
timings.

Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent d8b3d8cf

drivers/ata/pata_cmd64x.c

+4 −1
Original line number Diff line number Diff line
@@ -2,6 +2,7 @@ 
 * pata_cmd64x.c 	- CMD64x PATA for new ATA layer

 *			  (C) 2005 Red Hat Inc

 *			  Alan Cox <alan@lxorguk.ukuu.org.uk>

 *			  (C) 2009-2010 Bartlomiej Zolnierkiewicz

 *

 * Based upon

 * linux/drivers/ide/pci/cmd64x.c		Version 1.30	Sept 10, 2002
@@ -147,7 +148,9 @@ static void cmd64x_set_timing(struct ata_port *ap, struct ata_device *adev, u8 m 
	/* Now convert the clocks into values we can actually stuff into

	   the chip */



	if (t.recover > 1)

	if (t.recover == 16)

		t.recover = 0;

	else if (t.recover > 1)

		t.recover--;

	else

		t.recover = 15;