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path: root/drivers/hwmon/coretemp.c
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Diffstat (limited to 'drivers/hwmon/coretemp.c')
-rw-r--r--drivers/hwmon/coretemp.c32
1 files changed, 30 insertions, 2 deletions
diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c
index 2988da150ed6..05344af50734 100644
--- a/drivers/hwmon/coretemp.c
+++ b/drivers/hwmon/coretemp.c
@@ -53,6 +53,7 @@ struct coretemp_data {
struct mutex update_lock;
const char *name;
u32 id;
+ u16 core_id;
char valid; /* zero until following fields are valid */
unsigned long last_updated; /* in jiffies */
int temp;
@@ -75,7 +76,7 @@ static ssize_t show_name(struct device *dev, struct device_attribute
if (attr->index == SHOW_NAME)
ret = sprintf(buf, "%s\n", data->name);
else /* show label */
- ret = sprintf(buf, "Core %d\n", data->id);
+ ret = sprintf(buf, "Core %d\n", data->core_id);
return ret;
}
@@ -304,6 +305,9 @@ static int __devinit coretemp_probe(struct platform_device *pdev)
}
data->id = pdev->id;
+#ifdef CONFIG_SMP
+ data->core_id = c->cpu_core_id;
+#endif
data->name = "coretemp";
mutex_init(&data->update_lock);
@@ -405,6 +409,10 @@ struct pdev_entry {
struct list_head list;
struct platform_device *pdev;
unsigned int cpu;
+#ifdef CONFIG_SMP
+ u16 phys_proc_id;
+ u16 cpu_core_id;
+#endif
};
static LIST_HEAD(pdev_list);
@@ -415,6 +423,22 @@ static int __cpuinit coretemp_device_add(unsigned int cpu)
int err;
struct platform_device *pdev;
struct pdev_entry *pdev_entry;
+#ifdef CONFIG_SMP
+ struct cpuinfo_x86 *c = &cpu_data(cpu);
+#endif
+
+ mutex_lock(&pdev_list_mutex);
+
+#ifdef CONFIG_SMP
+ /* Skip second HT entry of each core */
+ list_for_each_entry(pdev_entry, &pdev_list, list) {
+ if (c->phys_proc_id == pdev_entry->phys_proc_id &&
+ c->cpu_core_id == pdev_entry->cpu_core_id) {
+ err = 0; /* Not an error */
+ goto exit;
+ }
+ }
+#endif
pdev = platform_device_alloc(DRVNAME, cpu);
if (!pdev) {
@@ -438,7 +462,10 @@ static int __cpuinit coretemp_device_add(unsigned int cpu)
pdev_entry->pdev = pdev;
pdev_entry->cpu = cpu;
- mutex_lock(&pdev_list_mutex);
+#ifdef CONFIG_SMP
+ pdev_entry->phys_proc_id = c->phys_proc_id;
+ pdev_entry->cpu_core_id = c->cpu_core_id;
+#endif
list_add_tail(&pdev_entry->list, &pdev_list);
mutex_unlock(&pdev_list_mutex);
@@ -449,6 +476,7 @@ exit_device_free:
exit_device_put:
platform_device_put(pdev);
exit:
+ mutex_unlock(&pdev_list_mutex);
return err;
}