intel_th: msu: Create sysfs attributes using core driver's facility

The core intel_th driver allows subdevices to bring in their sysfs
attributes. Use this instead of taking care of them in probe and
remove.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Reviewed-by: Laurent Fert <laurent.fert@intel.com>

diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c
index 747ccf8..25af214 100644 (file)
--- a/drivers/hwtracing/intel_th/msu.c
+++ b/drivers/hwtracing/intel_th/msu.c
@@ -1478,10 +1478,6 @@ static int intel_th_msc_probe(struct intel_th_device *thdev)
        if (err)
                return err;
 
-       err = sysfs_create_group(&dev->kobj, &msc_output_group);
-       if (err)
-               return err;
-
        dev_set_drvdata(dev, msc);
 
        return 0;
@@ -1489,7 +1485,6 @@ static int intel_th_msc_probe(struct intel_th_device *thdev)
 
 static void intel_th_msc_remove(struct intel_th_device *thdev)
 {
-       sysfs_remove_group(&thdev->dev.kobj, &msc_output_group);
 }
 
 static struct intel_th_driver intel_th_msc_driver = {
@@ -1498,6 +1493,7 @@ static struct intel_th_driver intel_th_msc_driver = {
        .activate       = intel_th_msc_activate,
        .deactivate     = intel_th_msc_deactivate,
        .fops   = &intel_th_msc_fops,
+       .attr_group     = &msc_output_group,
        .driver = {
                .name   = "msc",
                .owner  = THIS_MODULE,