greybus: nullify dangling pointers

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

diff --git a/drivers/staging/greybus/ap.c b/drivers/staging/greybus/ap.c
index a8cd7e7..9d743f2 100644 (file)
--- a/drivers/staging/greybus/ap.c
+++ b/drivers/staging/greybus/ap.c
@@ -367,6 +367,7 @@ int gb_ap_init(void)
 void gb_ap_exit(void)
 {
        destroy_workqueue(ap_workqueue);
+       ap_workqueue = NULL;
 }
 
 

diff --git a/drivers/staging/greybus/debugfs.c b/drivers/staging/greybus/debugfs.c
index ef292f4..4755a36 100644 (file)
--- a/drivers/staging/greybus/debugfs.c
+++ b/drivers/staging/greybus/debugfs.c
@@ -26,4 +26,5 @@ int gb_debugfs_init(void)
 void gb_debugfs_cleanup(void)
 {
        debugfs_remove_recursive(gb_debug_root);
+       gb_debug_root = NULL;
 }

diff --git a/drivers/staging/greybus/gbuf.c b/drivers/staging/greybus/gbuf.c
index 8b5a438..d5cfb38 100644 (file)
--- a/drivers/staging/greybus/gbuf.c
+++ b/drivers/staging/greybus/gbuf.c
@@ -136,4 +136,5 @@ int gb_gbuf_init(void)
 void gb_gbuf_exit(void)
 {
        kmem_cache_destroy(gbuf_head_cache);
+       gbuf_head_cache = NULL;
 }