diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 8147147df2f434a2d15593a564a7a1d1ac3dca0a..06503c10ea27801e039d80df4379602b68192aac 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -2056,6 +2056,8 @@ sg_unlink_reserve(Sg_fd * sfp, Sg_request * srp)
 	req_schp->page_order = 0;
 	req_schp->sglist_len = 0;
 	srp->res_used = 0;
+	/* Called without mutex lock to avoid deadlock */
+	sfp->res_in_use = 0;
 }
 
 static Sg_request *