sparc: Make '-p' boot option meaningful again.

If "-p" is given on the command line, clear the CON_BOOT
flag for the initial early boot PROM console.

This is necessary to try and see crash messages that occur
between the registry of the VT console and the probing of
the first framebuffer or serial console.  During this time
no console messages are emitted because the VT console
registry (even if no backend is registered to it) removes
the early console if CON_BOOT is set.

Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 2 insertions, 2 deletions

diff --git a/arch/sparc/kernel/setup_32.c b/arch/sparc/kernel/setup_32.c
index d26e1f6c717a..3e3e2914c70b 100644
--- a/arch/sparc/kernel/setup_32.c
+++ b/arch/sparc/kernel/setup_32.c
@@ -137,7 +137,7 @@ static void __init process_switch(char c)
                 prom_halt();
                 break;
         case 'p':
-                /* Just ignore, this behavior is now the default.  */
+                prom_early_console.flags &= ~CON_BOOT;
                 break;
         default:
                 printk("Unknown boot switch (-%c)\n", c);
diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c
index 4139289a25f4..c965595aa7e9 100644
--- a/arch/sparc/kernel/setup_64.c
+++ b/arch/sparc/kernel/setup_64.c
@@ -106,7 +106,7 @@ static void __init process_switch(char c)
                 prom_halt();
                 break;
         case 'p':
-                /* Just ignore, this behavior is now the default.  */
+                prom_early_console.flags &= ~CON_BOOT;
                 break;
         case 'P':
                 /* Force UltraSPARC-III P-Cache on. */