1 files changed, 5 insertions, 0 deletions

diff --git a/lib/dma-debug.c b/lib/dma-debug.c
index d9b08e0f7f55..739974460c32 100644
--- a/lib/dma-debug.c
+++ b/lib/dma-debug.c
@@ -676,6 +676,8 @@ static int dma_debug_device_change(struct notifier_block *nb,
         struct device *dev = data;
         int count;
 
+        if (global_disable)
+                return;
 
         switch (action) {
         case BUS_NOTIFY_UNBOUND_DRIVER:
@@ -697,6 +699,9 @@ void dma_debug_add_bus(struct bus_type *bus)
 {
         struct notifier_block *nb;
 
+        if (global_disable)
+                return;
+
         nb = kzalloc(sizeof(struct notifier_block), GFP_KERNEL);
         if (nb == NULL) {
                 pr_err("dma_debug_add_bus: out of memory\n");