[PATCH printk v2 1/2] printk/nbcon: Flush nbcon_irq_work in nbcon_free()

[John Ogness <john.ogness@linutronix.de>]

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

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

diff --git a/kernel/printk/nbcon.c b/kernel/printk/nbcon.c
index a5921a84a80ed..218b1922a58de 100644
--- a/kernel/printk/nbcon.c
+++ b/kernel/printk/nbcon.c
@@ -1849,6 +1849,8 @@ void nbcon_free(struct console *con)
 			printk_kthreads_running = false;
 	}
 
+	irq_work_sync(&con->irq_work);
+
 	nbcon_state_set(con, &state);
 
 	/* Boot consoles share global printk buffers. */
-- 
2.47.3