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authorJean Delvare <khali@linux-fr.org>2005-09-25 16:18:49 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2005-10-28 14:02:06 -0700
commitb918ecd2429e1a89b846d9e49ca4520b963c13e8 (patch)
tree396e8a1f2e958f713722b53c2ab68c66e9b265b3 /Documentation
parente415e48b68155bea8b5452113dedba4ec486f3f6 (diff)
downloadop-kernel-dev-b918ecd2429e1a89b846d9e49ca4520b963c13e8.zip
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[PATCH] hwmon: Do not forcibly enable via686a by default
Do not enable the VIA VT82C686A/B integrated sensors by default, as disabled sensors usually means that this feature is not used so the values won't make any sense. This has been confusing many users in the past: http://www2.lm-sensors.nu/~lm78/readticket.cgi?ticket=1786 http://www2.lm-sensors.nu/~lm78/readticket.cgi?ticket=1811 http://www2.lm-sensors.nu/~lm78/readticket.cgi?ticket=2052 It is still possible to forcibly enable the sensors by using the force_addr module parameter. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Documentation/hwmon/via686a | 17 +++++++++++++++-- drivers/hwmon/via686a.c | 18 +++++++++++------- 2 files changed, 26 insertions(+), 9 deletions(-)
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/hwmon/via686a17
1 files changed, 15 insertions, 2 deletions
diff --git a/Documentation/hwmon/via686a b/Documentation/hwmon/via686a
index b82014c..a936fb3 100644
--- a/Documentation/hwmon/via686a
+++ b/Documentation/hwmon/via686a
@@ -18,8 +18,9 @@ Authors:
Module Parameters
-----------------
-force_addr=0xaddr Set the I/O base address. Useful for Asus A7V boards
- that don't set the address in the BIOS. Does not do a
+force_addr=0xaddr Set the I/O base address. Useful for boards that
+ don't set the address in the BIOS. Look for a BIOS
+ upgrade before resorting to this. Does not do a
PCI force; the via686a must still be present in lspci.
Don't use this unless the driver complains that the
base address is not set.
@@ -63,3 +64,15 @@ miss once-only alarms.
The driver only updates its values each 1.5 seconds; reading it more often
will do no harm, but will return 'old' values.
+
+Known Issues
+------------
+
+This driver handles sensors integrated in some VIA south bridges. It is
+possible that a motherboard maker used a VT82C686A/B chip as part of a
+product design but was not interested in its hardware monitoring features,
+in which case the sensor inputs will not be wired. This is the case of
+the Asus K7V, A7V and A7V133 motherboards, to name only a few of them.
+So, if you need the force_addr parameter, and end up with values which
+don't seem to make any sense, don't look any further: your chip is simply
+not wired for hardware monitoring.
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