Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / sound / hda / hda_bus_type.c

diff --git a/kernel/sound/hda/hda_bus_type.c b/kernel/sound/hda/hda_bus_type.c
new file mode 100644 (file)
index 0000000..519914a
--- /dev/null
+++ b/kernel/sound/hda/hda_bus_type.c
@@ -0,0 +1,42 @@
+/*
+ * HD-audio bus
+ */
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/export.h>
+#include <sound/hdaudio.h>
+
+MODULE_DESCRIPTION("HD-audio bus");
+MODULE_LICENSE("GPL");
+
+static int hda_bus_match(struct device *dev, struct device_driver *drv)
+{
+       struct hdac_device *hdev = dev_to_hdac_dev(dev);
+       struct hdac_driver *hdrv = drv_to_hdac_driver(drv);
+
+       if (hdev->type != hdrv->type)
+               return 0;
+       if (hdrv->match)
+               return hdrv->match(hdev, hdrv);
+       return 1;
+}
+
+struct bus_type snd_hda_bus_type = {
+       .name = "hdaudio",
+       .match = hda_bus_match,
+};
+EXPORT_SYMBOL_GPL(snd_hda_bus_type);
+
+static int __init hda_bus_init(void)
+{
+       return bus_register(&snd_hda_bus_type);
+}
+
+static void __exit hda_bus_exit(void)
+{
+       bus_unregister(&snd_hda_bus_type);
+}
+
+subsys_initcall(hda_bus_init);
+module_exit(hda_bus_exit);