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[PATCH] [MIPS] change EARLY_PRINTK default to n

To: Ralf Baechle <>
Subject: [PATCH] [MIPS] change EARLY_PRINTK default to n
From: David Pelton <>
Date: Mon, 16 Jun 2008 15:15:39 -0400
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This patch changes the default for CONFIG_EARLY_PRINTK to n.  Prior to
this change, the presence of SYS_HAS_EARLY_PRINTK would always set
EARLY_PRINTK to y if either EMBEDDED or DEBUG_KERNEL were not set.  As
this is a debugging option, it should default to n.

Signed-off-by: David Pelton <>


while fiddling with kernel configuration options for the Broadcom eval
board I am working with, I noticed that turning off DEBUG_KERNEL would
make many bad things happen.  I did not get to the root cause, but I
think that some of the early printk drivers have some dependency on
functionality enabled by DEBUG_KERNEL.  The kernel has a
default value of "y" for EARLY_PRINTK, and this default will be applied
anytime the platform claims to support early printk.  In particular, if
DEBUG_KERNEL is not selected, there is no way to disable EARLY_PRINTK.
This patch changes the default to "n" to avoid these problems.

- David Pelton

arch/mips/Kconfig |    2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff -Nraup linux- 
--- linux-      2008-06-09 14:27:19.000000000 
+++ linux-    2008-06-16 14:34:33.229160000 -0400
@@ -807,7 +807,7 @@ config DMA_NEED_PCI_MAP_STATE
       bool "Early printk" if EMBEDDED && DEBUG_KERNEL
       depends on SYS_HAS_EARLY_PRINTK
-       default y
+       default n
         This option enables special console drivers which allow the kernel
         to print messages very early in the bootup process.

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