[PATCH] PCDP: if PCDP contains parity information, use it

If the PCDP supplies parity, use it (only none/even/odd supported), and
don't append parity/stop bit arguments unless baud is present.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/firmware/pcdp.c b/drivers/firmware/pcdp.c
index 53c95c0..ae1fb45 100644 (file)
--- a/drivers/firmware/pcdp.c
+++ b/drivers/firmware/pcdp.c
@@ -25,14 +25,22 @@ setup_serial_console(struct pcdp_uart *uart)
 #ifdef CONFIG_SERIAL_8250_CONSOLE
        int mmio;
        static char options[64], *p = options;
+       char parity;
 
        mmio = (uart->addr.address_space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY);
        p += sprintf(p, "console=uart,%s,0x%lx",
                mmio ? "mmio" : "io", uart->addr.address);
-       if (uart->baud)
+       if (uart->baud) {
                p += sprintf(p, ",%lu", uart->baud);
-       if (uart->bits)
-               p += sprintf(p, "n%d", uart->bits);
+               if (uart->bits) {
+                       switch (uart->parity) {
+                           case 0x2: parity = 'e'; break;
+                           case 0x3: parity = 'o'; break;
+                           default:  parity = 'n';
+                       }
+                       p += sprintf(p, "%c%d", parity, uart->bits);
+               }
+       }
 
        return early_serial_console_init(options);
 #else