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authorAndreas Herrmann <andreas.herrmann3@amd.com>2009-01-15 22:27:47 +0100
committerJean Delvare <khali@linux-fr.org>2009-01-15 22:27:47 +0100
commita2e066bba2aad6583e3ff648bf28339d6c9f0898 (patch)
tree64b84783acc67aa3c20d0587b79efe6e618bbd73 /drivers/hwmon
parentbb9a35f293a3c8b5d57253cdfe2f29fa2627e1b9 (diff)
downloadop-kernel-dev-a2e066bba2aad6583e3ff648bf28339d6c9f0898.zip
op-kernel-dev-a2e066bba2aad6583e3ff648bf28339d6c9f0898.tar.gz
hwmon: (k8temp) Fix wrong sensor selection for AMD K8 RevF/RevG CPUs
Meaning of ThermSenseCoreSel bit was inverted beginning with K8 RevF. That means with current driver temp1/temp2 belong to core 1 and temp3/temp4 belong to core 0 on a K8 RevF/RevG CPU. This patch ensures that temp1/temp2 always belong to core 0 and temp3/temp4 to core 1 for all K8 revisions. Cc: Rudolf Marek <r.marek@assembler.cz> Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'drivers/hwmon')
-rw-r--r--drivers/hwmon/k8temp.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/hwmon/k8temp.c b/drivers/hwmon/k8temp.c
index ca56f2e..a6381bc 100644
--- a/drivers/hwmon/k8temp.c
+++ b/drivers/hwmon/k8temp.c
@@ -48,6 +48,7 @@ struct k8temp_data {
/* registers values */
u8 sensorsp; /* sensor presence bits - SEL_CORE & SEL_PLACE */
u32 temp[2][2]; /* core, place */
+ u8 swap_core_select; /* meaning of SEL_CORE is inverted */
};
static struct k8temp_data *k8temp_update_device(struct device *dev)
@@ -117,6 +118,9 @@ static ssize_t show_temp(struct device *dev,
int place = attr->index;
struct k8temp_data *data = k8temp_update_device(dev);
+ if (data->swap_core_select)
+ core = core ? 0 : 1;
+
return sprintf(buf, "%d\n",
TEMP_FROM_REG(data->temp[core][place]));
}
@@ -162,7 +166,12 @@ static int __devinit k8temp_probe(struct pci_dev *pdev,
goto exit_free;
}
+ /*
+ * AMD NPT family 0fh, i.e. RevF and RevG:
+ * meaning of SEL_CORE bit is inverted
+ */
if (model >= 0x40) {
+ data->swap_core_select = 1;
dev_warn(&pdev->dev, "Temperature readouts might be "
"wrong - check erratum #141\n");
}
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