kernel_5.10 no rt

hc

2023-12-11 6778948f9de86c3cfaf36725a7c87dcff9ba247f

 kernel/drivers/tty/serial/omap-serial.c
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@@ -1311,10 +1311,13 @@
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 	pm_runtime_get_sync(up->dev);
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-	if (up->port.sysrq || oops_in_progress)
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-		locked = spin_trylock_irqsave(&up->port.lock, flags);
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+	local_irq_save(flags);
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+	if (up->port.sysrq)
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+		locked = 0;
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+	else if (oops_in_progress)
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+		locked = spin_trylock(&up->port.lock);
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 	else
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-		spin_lock_irqsave(&up->port.lock, flags);
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+		spin_lock(&up->port.lock);
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 	/*
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 	 * First save the IER then disable the interrupts
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@@ -1343,7 +1346,8 @@
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 	pm_runtime_mark_last_busy(up->dev);
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 	pm_runtime_put_autosuspend(up->dev);
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 	if (locked)
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-		spin_unlock_irqrestore(&up->port.lock, flags);
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+		spin_unlock(&up->port.lock);
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+	local_irq_restore(flags);
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 }
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 static int __init