platform/x86: silead_dmi - abort early if DMI does not match
There is no point in registering I2C bus notifier if DMI data does not
match.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
[andy: updated due to previous patch changed]
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
diff --git a/drivers/platform/x86/silead_dmi.c b/drivers/platform/x86/silead_dmi.c
index 7564cc6..3ff70ae 100644
--- a/drivers/platform/x86/silead_dmi.c
+++ b/drivers/platform/x86/silead_dmi.c
@@ -96,21 +96,16 @@ static const struct dmi_system_id silead_ts_dmi_table[] = {
{ },
};
+static const struct silead_ts_dmi_data *silead_ts_data;
+
static void silead_ts_dmi_add_props(struct i2c_client *client)
{
struct device *dev = &client->dev;
- const struct dmi_system_id *dmi_id;
- const struct silead_ts_dmi_data *ts_data;
int error;
- dmi_id = dmi_first_match(silead_ts_dmi_table);
- if (!dmi_id)
- return;
-
- ts_data = dmi_id->driver_data;
if (has_acpi_companion(dev) &&
- !strncmp(ts_data->acpi_name, client->name, I2C_NAME_SIZE)) {
- error = device_add_properties(dev, ts_data->properties);
+ !strncmp(silead_ts_data->acpi_name, client->name, I2C_NAME_SIZE)) {
+ error = device_add_properties(dev, silead_ts_data->properties);
if (error)
dev_err(dev, "failed to add properties: %d\n", error);
}
@@ -142,8 +137,15 @@ static struct notifier_block silead_ts_dmi_notifier = {
static int __init silead_ts_dmi_init(void)
{
+ const struct dmi_system_id *dmi_id;
int error;
+ dmi_id = dmi_first_match(silead_ts_dmi_table);
+ if (!dmi_id)
+ return 0; /* Not an error */
+
+ silead_ts_data = dmi_id->driver_data;
+
error = bus_register_notifier(&i2c_bus_type, &silead_ts_dmi_notifier);
if (error)
pr_err("%s: failed to register i2c bus notifier: %d\n",