[PATCH printk v3 1/2] printk/nbcon: Flush nbcon_irq_work in nbcon_free()

[John Ogness]

Ensure any pending nbcon_irq_work is flushed before allowing the
console to be recycled.

Signed-off-by: John Ogness <john.ogness@xxxxxxxxxxxxx>
---
 kernel/printk/nbcon.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/printk/nbcon.c b/kernel/printk/nbcon.c
index a5921a84a80ed..68f77afee9106 100644
--- a/kernel/printk/nbcon.c
+++ b/kernel/printk/nbcon.c
@@ -1837,6 +1837,8 @@ void nbcon_free(struct console *con)
 	/* Synchronize the kthread stop. */
 	lockdep_assert_console_list_lock_held();
 
+	irq_work_sync(&con->irq_work);
+
 	if (printk_kthreads_running) {
 		nbcon_kthread_stop(con);
 
-- 
2.47.3