ALSA: seq: Fix init order of snd_seq_device stuff

When the sequencer driver is built in kernel, it may panic at boot
because of the uninitialized snd_seq_bus_type.  Initialize it properly
via subsys_initcall() instead of module_init() to assure that the bus
is registered beforehand.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Fixes: 7c37ae5c625a ('ALSA: seq: Rewrite sequencer device binding with standard bus')
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/core/seq/seq_device.c b/sound/core/seq/seq_device.c
index 355b34269bd19ff7ef4d42b7b506256e2ca8ea38..d99f99d61983a204e0c60f3a455b6fa856b48f6a 100644 (file)
--- a/sound/core/seq/seq_device.c
+++ b/sound/core/seq/seq_device.c
@@ -311,5 +311,5 @@ static void __exit alsa_seq_device_exit(void)
        bus_unregister(&snd_seq_bus_type);
 }
 
-module_init(alsa_seq_device_init)
+subsys_initcall(alsa_seq_device_init)
 module_exit(alsa_seq_device_exit)