[SERIAL] Prefix serial printks with KERN_INFO and pre-format

Pre-format the IO part of the ttyS printks, and prefix them with
KERN_INFO to avoid bootsplash corruption.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 14 insertions, 6 deletions

diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c
index dea156a62d0a..2d8622eef701 100644
--- a/drivers/serial/serial_core.c
+++ b/drivers/serial/serial_core.c
@@ -1947,21 +1947,29 @@ int uart_resume_port(struct uart_driver *drv, struct uart_port *port)
 static inline void
 uart_report_port(struct uart_driver *drv, struct uart_port *port)
 {
-        printk("%s%d", drv->dev_name, port->line);
-        printk(" at ");
+        char address[64];
+
         switch (port->iotype) {
         case UPIO_PORT:
-                printk("I/O 0x%x", port->iobase);
+                snprintf(address, sizeof(address),
+                         "I/O 0x%x", port->iobase);
                 break;
         case UPIO_HUB6:
-                printk("I/O 0x%x offset 0x%x", port->iobase, port->hub6);
+                snprintf(address, sizeof(address),
+                         "I/O 0x%x offset 0x%x", port->iobase, port->hub6);
                 break;
         case UPIO_MEM:
         case UPIO_MEM32:
-                printk("MMIO 0x%lx", port->mapbase);
+                snprintf(address, sizeof(address),
+                         "MMIO 0x%lx", port->mapbase);
+                break;
+        default:
+                strlcpy(address, "*unknown*", sizeof(address));
                 break;
         }
-        printk(" (irq = %d) is a %s\n", port->irq, uart_type(port));
+
+        printk(KERN_INFO "%s%d at %s (irq = %d) is a %s\n",
+               drv->dev_name, port->line, address, port->irq, uart_type(port));
 }
 
 static void