Hello, due my job on sleep mode for MIPS au1x00 I need the serial console till sleep time so let me propose this patch that disables serial port suspend if a console is running on it and the kernel has CONFIG_DEBUG_KERNEL flag on. Ciao, Rodolfo -- GNU/Linux Solutions e-mail: giometti@xxxxxxxxxxxx Linux Device Driver giometti@xxxxxxxxx Embedded Systems giometti@xxxxxxxx UNIX programming phone: +39 349 2432127
diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c
index 9e27aee..27ed4f2 100644
--- a/drivers/serial/serial_core.c
+++ b/drivers/serial/serial_core.c
@@ -1919,6 +1919,14 @@ int uart_suspend_port(struct uart_driver
{
struct uart_state *state = drv->state + port->line;
+#ifdef CONFIG_DEBUG_KERNEL
+ if (uart_console(port)) {
+ printk(KERN_INFO "warning! Serial console %s%d is not disabled in debug kernel mode\n",
+ drv->dev_name, port->line);
+ return 0;
+ }
+#endif
+
mutex_lock(&state->mutex);
if (state->info && state->info->flags & UIF_INITIALIZED) {
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