From e1da95ae38afdcda83328300c4aed755d9fc01a6 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 25 Sep 2006 23:32:57 -0700 Subject: [PATCH] [PATCH] suspend: make it possible to disable serial console suspend Hack uart_suspend_port() and uart_resume_port() so that serial console ports are not suspended if CONFIG_DISABLE_CONSOLE_SUSPEND is set. This makes it possible to debug the suspend and resume routines of all device drivers as well as the lowest-level swsusp code with the help of the serial console. Signed-off-by: Rafael J. Wysocki Acked-by: Pavel Machek Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/serial/serial_core.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c index 372e47f7d596..5f7ba1adb309 100644 --- a/drivers/serial/serial_core.c +++ b/drivers/serial/serial_core.c @@ -1929,6 +1929,13 @@ int uart_suspend_port(struct uart_driver *drv, struct uart_port *port) mutex_lock(&state->mutex); +#ifdef CONFIG_DISABLE_CONSOLE_SUSPEND + if (uart_console(port)) { + mutex_unlock(&state->mutex); + return 0; + } +#endif + if (state->info && state->info->flags & UIF_INITIALIZED) { const struct uart_ops *ops = port->ops; @@ -1967,6 +1974,13 @@ int uart_resume_port(struct uart_driver *drv, struct uart_port *port) mutex_lock(&state->mutex); +#ifdef CONFIG_DISABLE_CONSOLE_SUSPEND + if (uart_console(port)) { + mutex_unlock(&state->mutex); + return 0; + } +#endif + uart_change_pm(state, 0); /* -- 2.20.1