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platform_kernel-5.15
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[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 <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Rafael J. Wysocki 2006-09-25 23:32:57 -07:00 committed by Linus Torvalds
parent c8eb8b4025
commit e1da95ae38
1 changed files with 14 additions and 0 deletions
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14
drivers/serial/serial_core.c
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@ -1929,6 +1929,13 @@ int uart_suspend_port(struct uart_driver *drv, struct uart_port *port)
mutex_lock(&state->mutex); 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) { if (state->info && state->info->flags & UIF_INITIALIZED) {
const struct uart_ops *ops = port->ops; 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); 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); uart_change_pm(state, 0);
/* /*