29 lines
1 KiB
Diff
29 lines
1 KiB
Diff
From: John Ogness <john.ogness@linutronix.de>
|
|
Date: Mon, 2 Oct 2023 15:30:43 +0000
|
|
Subject: [PATCH 133/134] serial: 8250: revert "drop lockdep annotation from
|
|
serial8250_clear_IER()"
|
|
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/6.6/older/patches-6.6.7-rt18.tar.xz
|
|
|
|
The 8250 driver no longer depends on @oops_in_progress and
|
|
will no longer violate the port->lock locking constraints.
|
|
|
|
This reverts commit 3d9e6f556e235ddcdc9f73600fdd46fe1736b090.
|
|
|
|
Signed-off-by: John Ogness <john.ogness@linutronix.de>
|
|
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
|
---
|
|
drivers/tty/serial/8250/8250_port.c | 3 +++
|
|
1 file changed, 3 insertions(+)
|
|
|
|
--- a/drivers/tty/serial/8250/8250_port.c
|
|
+++ b/drivers/tty/serial/8250/8250_port.c
|
|
@@ -728,6 +728,9 @@ static void __serial8250_clear_IER(struc
|
|
|
|
static inline void serial8250_clear_IER(struct uart_8250_port *up)
|
|
{
|
|
+ /* Port locked to synchronize UART_IER access against the console. */
|
|
+ lockdep_assert_held_once(&up->port.lock);
|
|
+
|
|
__serial8250_clear_IER(up);
|
|
}
|
|
|