[PATCH] pcmcia: release_class
Properly wait for the class refcount to reach zero.
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/pcmcia/cs.c b/drivers/pcmcia/cs.c
index 0ff4d6e..e82859d 100644
--- a/drivers/pcmcia/cs.c
+++ b/drivers/pcmcia/cs.c
@@ -903,17 +903,29 @@
}
+static struct completion pcmcia_unload;
+
+static void pcmcia_release_socket_class(struct class *data)
+{
+ complete(&pcmcia_unload);
+}
+
+
struct class pcmcia_socket_class = {
.name = "pcmcia_socket",
.hotplug = pcmcia_socket_hotplug,
.release = pcmcia_release_socket,
+ .class_release = pcmcia_release_socket_class,
};
EXPORT_SYMBOL(pcmcia_socket_class);
static int __init init_pcmcia_cs(void)
{
- int ret = class_register(&pcmcia_socket_class);
+ int ret;
+
+ init_completion(&pcmcia_unload);
+ ret = class_register(&pcmcia_socket_class);
if (ret)
return (ret);
return class_interface_register(&pccard_sysfs_interface);
@@ -923,6 +935,8 @@
{
class_interface_unregister(&pccard_sysfs_interface);
class_unregister(&pcmcia_socket_class);
+
+ wait_for_completion(&pcmcia_unload);
}
subsys_initcall(init_pcmcia_cs);