X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=drivers%2Fdca%2Fdca-core.c;h=819dfda8823623fb8c7741f4ed299626393db044;hb=e61c09249a39c0133bd5553576162ab2a56c6d43;hp=25ec0bb05198f1587fb8687d057941c5f09c09d6;hpb=d25223a0d22f7ec4203ec285dc6e51f696591ba3;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

diff --git a/drivers/dca/dca-core.c b/drivers/dca/dca-core.c
index 25ec0bb..819dfda 100644
--- a/drivers/dca/dca-core.c
+++ b/drivers/dca/dca-core.c
@@ -28,6 +28,7 @@
 #include <linux/device.h>
 #include <linux/dca.h>
 #include <linux/slab.h>
+#include <linux/module.h>
 
 #define DCA_VERSION "1.12.1"
 
@@ -419,6 +420,11 @@ void unregister_dca_provider(struct dca_provider *dca, struct device *dev)
 
 	raw_spin_lock_irqsave(&dca_lock, flags);
 
+	if (list_empty(&dca_domains)) {
+		raw_spin_unlock_irqrestore(&dca_lock, flags);
+		return;
+	}
+
 	list_del(&dca->node);
 
 	pci_rc = dca_pci_rc_from_dev(dev);