From 859b9ef30cc1bdba4b55327b95b22489bd5591c2 Mon Sep 17 00:00:00 2001
From: Andrew Paprocki <andrew@ishiboo.com>
Date: Sat, 20 Sep 2008 10:25:19 +0200
Subject: [PATCH] hwmon: (it87) Fix fan tachometer reading in IT8712F rev 0x7
(I)
The IT8712F v0.9.1 datasheet applies to revisions >= 0x8 (J).
The driver was incorrectly attempting to enable 16-bit fan
readings on rev 0x7 (I) which led to incorrect RPM values.
Signed-off-by: Andrew Paprocki <andrew@ishiboo.com>
Tested-by: John Gumb <john.gumb@tandberg.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
---
drivers/hwmon/it87.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index 30cdb09567796..f1133081cc427 100644
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -273,10 +273,10 @@ struct it87_data {
static inline int has_16bit_fans(const struct it87_data *data)
{
/* IT8705F Datasheet 0.4.1, 3h == Version G.
- IT8712F Datasheet 0.9.1, section 8.3.5 indicates 7h == Version I.
+ IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
These are the first revisions with 16bit tachometer support. */
return (data->type == it87 && data->revision >= 0x03)
- || (data->type == it8712 && data->revision >= 0x07)
+ || (data->type == it8712 && data->revision >= 0x08)
|| data->type == it8716
|| data->type == it8718;
}
--
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