linux-kernel - [PATCH 08/64] pata

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Message-Id: <20100118171455.14623.81852.sendpatchset@localhost>
Date:	Mon, 18 Jan 2010 18:14:55 +0100
From:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
To:	linux-ide@...r.kernel.org
Cc:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 08/64] pata_cmd64x: fix PIO setup

From: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
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@...il.com>
---
 drivers/ata/pata_cmd64x.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

Index: b/drivers/ata/pata_cmd64x.c
===================================================================
--- a/drivers/ata/pata_cmd64x.c
+++ b/drivers/ata/pata_cmd64x.c
@@ -2,7 +2,7 @@
  * pata_cmd64x.c 	- CMD64x PATA for new ATA layer
  *			  (C) 2005 Red Hat Inc
  *			  Alan Cox <alan@...rguk.ukuu.org.uk>
- *			  (C) 2009 Bartlomiej Zolnierkiewicz
+ *			  (C) 2009-2010 Bartlomiej Zolnierkiewicz
  *
  * Based upon
  * linux/drivers/ide/pci/cmd64x.c		Version 1.30	Sept 10, 2002
@@ -182,7 +182,9 @@ 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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