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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2010-01-18 18:14:55 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2011-06-23 15:24:08 -0700
commitef83f5dfa7327c9c87ead68d5ed4749578eabf9e (patch)
treeacaf61f992b399e8edc44c920ba94cf7a8cc3a61 /drivers
parent26b6b318dfa3fb55bf07fe318460178b5e10857c (diff)
downloadlinux-linaro-stable-ef83f5dfa7327c9c87ead68d5ed4749578eabf9e.tar.gz
pata_cmd64x: fix PIO setup
commit a2bd62207af4be8f5fe815ff90cc309056407829 upstream. 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> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/ata/pata_cmd64x.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/ata/pata_cmd64x.c b/drivers/ata/pata_cmd64x.c
index 0efb1f58f255..db08c9d1a333 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;