@@ -15,6 +15,7 @@
*/
#include <linux/acpi.h>
+#include <linux/cleanup.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/ioport.h>
@@ -41,6 +42,8 @@
#include <asm/irq.h>
+#include "../serial_base.h" /* For serial_base_add_isa_preferred_console() */
+
#include "8250.h"
/*
@@ -563,6 +566,8 @@ static void __init serial8250_isa_init_ports(void)
port->irqflags |= irqflag;
if (serial8250_isa_config != NULL)
serial8250_isa_config(i, &up->port, &up->capabilities);
+
+ serial_base_add_isa_preferred_console(serial8250_reg.dev_name, i);
}
}
@@ -51,6 +51,8 @@ void serial_core_unregister_port(struct uart_driver *drv, struct uart_port *port
int serial_base_add_preferred_console(struct uart_driver *drv,
struct uart_port *port);
+int serial_base_add_isa_preferred_console(const char *name, int idx);
+
#else
static inline
@@ -60,4 +62,10 @@ int serial_base_add_preferred_console(struct uart_driver *drv,
return 0;
}
+static inline
+int serial_base_add_isa_preferred_console(const char *name, int idx)
+{
+ return 0;
+}
+
#endif
@@ -317,6 +317,27 @@ int serial_base_add_preferred_console(struct uart_driver *drv,
return serial_base_add_one_prefcon(port_match, drv->dev_name, port->line);
}
+#ifdef CONFIG_SERIAL_8250_CONSOLE
+
+/*
+ * Early ISA ports initialize the console before there is no struct device.
+ * This should be only called from serial8250_isa_init_preferred_console(),
+ * other callers are likely wrong and should rely on earlycon instead.
+ */
+int serial_base_add_isa_preferred_console(const char *name, int idx)
+{
+ return serial_base_add_prefcon(name, idx);
+}
+
+#else
+
+int serial_base_add_isa_preferred_console(const char *name, int idx)
+{
+ return 0;
+}
+
+#endif
+
#endif
static int serial_base_init(void)
Prepare 8250 ISA ports to drop kernel command line serial console handling from console_setup(). We need to set the preferred console in serial8250_isa_init_ports() to drop a dependency to setup_console() handling the ttyS related quirks. Otherwise when console_setup() handles the ttyS related options, console gets enabled only at driver probe time. Note that this mostly affects x86 as this happens based on define SERIAL_PORT_DFNS. Signed-off-by: Tony Lindgren <tony@atomide.com> --- drivers/tty/serial/8250/8250_core.c | 5 +++++ drivers/tty/serial/serial_base.h | 8 ++++++++ drivers/tty/serial/serial_base_bus.c | 21 +++++++++++++++++++++ 3 files changed, 34 insertions(+)