oops handling: ensure that any oops is flushed to the mtdoops console

This used to work unpatched with older kernels, during the development
phase of mtdoops.  Before commit e3e8a75d2a
a space was printed with console_loglevel set to 15, which probably
flushed the oops message as a side effect.

This is another patch from the Nokia N810 kernel.

Signed-off-by: Viktor Rosendahl <[email protected]>
Cc: Alan Cox <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: David Woodhouse <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

lib/bust_spinlocks.c

@@ -12,6 +12,7 @@
 #include <linux/tty.h>
 #include <linux/wait.h>
 #include <linux/vt_kern.h>
+#include <linux/console.h>
 
 
 void __attribute__((weak)) bust_spinlocks(int yes)
@@ -22,6 +23,7 @@ void __attribute__((weak)) bust_spinlocks(int yes)
 #ifdef CONFIG_VT
 		unblank_screen();
 #endif
+		console_unblank();
 		if (--oops_in_progress == 0)
 			wake_up_klogd();
 	}