From 154af912e8219d93e4297ce420bc0471ebac46f8 Mon Sep 17 00:00:00 2001
From: Anas Nashif <anas.nashif@intel.com>
Date: Sun, 16 Jun 2019 08:44:04 -0400
Subject: [PATCH] kernel: work_q: error handling

When trying to cancel a NULL work queue return -EAGAIN.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
---
 kernel/work_q.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/kernel/work_q.c b/kernel/work_q.c
index 1fb18f3ac83..7023f70f07d 100644
--- a/kernel/work_q.c
+++ b/kernel/work_q.c
@@ -16,6 +16,7 @@
 #include <spinlock.h>
 #include <errno.h>
 #include <stdbool.h>
+#include <sys/check.h>
 
 #define WORKQUEUE_THREAD_NAME	"workqueue"
 
@@ -54,7 +55,9 @@ void k_delayed_work_init(struct k_delayed_work *work, k_work_handler_t handler)
 
 static int work_cancel(struct k_delayed_work *work)
 {
-	__ASSERT(work->work_q != NULL, "");
+	CHECKIF(work->work_q == NULL) {
+		return -EAGAIN;
+	}
 
 	if (k_work_pending(&work->work)) {
 		/* Remove from the queue if already submitted */