V4L/DVB (8040): soc-camera: remove soc_camera_host_class class

Devices can either be class devices or bus devices, not both at the
same time. Soc-camera host devices usually have a platform device as
their parent. Trying to also register them with a class crashes the
kernel, when linked statically. Interestingly, it works when built
as a module. Thanks to Paulius Zaleckas for reporting.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@pengutronix.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

diff --git a/drivers/media/video/soc_camera.c b/drivers/media/video/soc_camera.c
index a1b9244..d015bfe 100644 (file)
--- a/drivers/media/video/soc_camera.c
+++ b/drivers/media/video/soc_camera.c
@@ -763,15 +763,6 @@ static struct device_driver ic_drv = {
        .owner  = THIS_MODULE,
 };
 
-/*
- * Image capture host - this is a host device, not a bus device, so,
- * no bus reference, no probing.
- */
-static struct class soc_camera_host_class = {
-       .owner          = THIS_MODULE,
-       .name           = "camera_host",
-};
-
 static void dummy_release(struct device *dev)
 {
 }
@@ -801,7 +792,6 @@ int soc_camera_host_register(struct soc_camera_host *ici)
 
        /* Number might be equal to the platform device ID */
        sprintf(ici->dev.bus_id, "camera_host%d", ici->nr);
-       ici->dev.class = &soc_camera_host_class;
 
        mutex_lock(&list_lock);
        list_for_each_entry(ix, &hosts, list) {
@@ -1003,14 +993,9 @@ static int __init soc_camera_init(void)
        ret = driver_register(&ic_drv);
        if (ret)
                goto edrvr;
-       ret = class_register(&soc_camera_host_class);
-       if (ret)
-               goto eclr;
 
        return 0;
 
-eclr:
-       driver_unregister(&ic_drv);
 edrvr:
        bus_unregister(&soc_camera_bus_type);
        return ret;
@@ -1018,7 +1003,6 @@ edrvr:
 
 static void __exit soc_camera_exit(void)
 {
-       class_unregister(&soc_camera_host_class);
        driver_unregister(&ic_drv);
        bus_unregister(&soc_camera_bus_type);
 }