30 lines
1.0 KiB
Diff
30 lines
1.0 KiB
Diff
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From: John Ogness <john.ogness@linutronix.de>
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Date: Mon, 2 Oct 2023 15:30:43 +0000
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Subject: [PATCH 54/54] serial: 8250: Revert "drop lockdep annotation from
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serial8250_clear_IER()"
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/6.11/older/patches-6.11-rt7.tar.xz
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The 8250 driver no longer depends on @oops_in_progress and
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will no longer violate the port->lock locking constraints.
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This reverts commit 3d9e6f556e235ddcdc9f73600fdd46fe1736b090.
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Signed-off-by: John Ogness <john.ogness@linutronix.de>
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Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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---
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drivers/tty/serial/8250/8250_port.c | 3 +++
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1 file changed, 3 insertions(+)
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--- a/drivers/tty/serial/8250/8250_port.c
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+++ b/drivers/tty/serial/8250/8250_port.c
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@@ -712,6 +712,9 @@ static void __serial8250_clear_IER(struc
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static inline void serial8250_clear_IER(struct uart_8250_port *up)
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{
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+ /* Port locked to synchronize UART_IER access against the console. */
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+ lockdep_assert_held_once(&up->port.lock);
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+
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__serial8250_clear_IER(up);
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}
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