2.6.33-longterm review patch. If anyone has any objections, please let us know.
------------------
From: Bartlomiej Zolnierkiewicz <bzoln...@gmail.com>
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 <bzoln...@gmail.com>
Signed-off-by: Jeff Garzik <jgar...@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gre...@suse.de>
---
drivers/ata/pata_cmd64x.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- 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 <a...@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
/* 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;
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