From a2bd62207af4be8f5fe815ff90cc309056407829 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Date: Mon, 18 Jan 2010 18:14:55 +0100 Subject: [PATCH] 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: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com> --- drivers/ata/pata_cmd64x.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/ata/pata_cmd64x.c b/drivers/ata/pata_cmd64x.c index 0efb1f58f2551f..db08c9d1a333b7 100644 --- a/drivers/ata/pata_cmd64x.c +++ b/drivers/ata/pata_cmd64x.c @@ -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; -- GitLab