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-rw-r--r--drivers/hwmon/pmbus/pmbus_core.c34
1 files changed, 30 insertions, 4 deletions
diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
index 48c2d5ae42a6..8470097907bc 100644
--- a/drivers/hwmon/pmbus/pmbus_core.c
+++ b/drivers/hwmon/pmbus/pmbus_core.c
@@ -1217,7 +1217,8 @@ static int pmbus_add_sensor_attrs_one(struct i2c_client *client,
const struct pmbus_driver_info *info,
const char *name,
int index, int page,
- const struct pmbus_sensor_attr *attr)
+ const struct pmbus_sensor_attr *attr,
+ bool paged)
{
struct pmbus_sensor *base;
bool upper = !!(attr->gbit & 0xff00); /* need to check STATUS_WORD */
@@ -1225,7 +1226,7 @@ static int pmbus_add_sensor_attrs_one(struct i2c_client *client,
if (attr->label) {
ret = pmbus_add_label(data, name, index, attr->label,
- attr->paged ? page + 1 : 0);
+ paged ? page + 1 : 0);
if (ret)
return ret;
}
@@ -1258,6 +1259,30 @@ static int pmbus_add_sensor_attrs_one(struct i2c_client *client,
return 0;
}
+static bool pmbus_sensor_is_paged(const struct pmbus_driver_info *info,
+ const struct pmbus_sensor_attr *attr)
+{
+ int p;
+
+ if (attr->paged)
+ return true;
+
+ /*
+ * Some attributes may be present on more than one page despite
+ * not being marked with the paged attribute. If that is the case,
+ * then treat the sensor as being paged and add the page suffix to the
+ * attribute name.
+ * We don't just add the paged attribute to all such attributes, in
+ * order to maintain the un-suffixed labels in the case where the
+ * attribute is only on page 0.
+ */
+ for (p = 1; p < info->pages; p++) {
+ if (info->func[p] & attr->func)
+ return true;
+ }
+ return false;
+}
+
static int pmbus_add_sensor_attrs(struct i2c_client *client,
struct pmbus_data *data,
const char *name,
@@ -1271,14 +1296,15 @@ static int pmbus_add_sensor_attrs(struct i2c_client *client,
index = 1;
for (i = 0; i < nattrs; i++) {
int page, pages;
+ bool paged = pmbus_sensor_is_paged(info, attrs);
- pages = attrs->paged ? info->pages : 1;
+ pages = paged ? info->pages : 1;
for (page = 0; page < pages; page++) {
if (!(info->func[page] & attrs->func))
continue;
ret = pmbus_add_sensor_attrs_one(client, data, info,
name, index, page,
- attrs);
+ attrs, paged);
if (ret)
return ret;
index++;