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Date:   Sat,  2 Oct 2021 17:02:23 -0700
From:   Randy Dunlap <>
Cc:     Randy Dunlap <>,
        Geert Uytterhoeven <>,
        Greg Ungerer <>,
Subject: [RFC PATCH] m68k: set a default value for MEMORY_RESERVE

'make randconfig' can produce a .config file with
"CONFIG_MEMORY_RESERVE=" (no value) since it has no default.
When a subsequent 'make all' is done, kconfig restarts the config
and prompts for a value for MEMORY_RESERVE. This breaks
scripting/automation where there is no interactive user input.

Add a default value for MEMORY_RESERVE. (Any integer value will
work here for kconfig.)

Fixes a kconfig warning:

.config:214:warning: symbol value '' invalid for MEMORY_RESERVE
* Restart config...
Memory reservation (MiB) (MEMORY_RESERVE) [] (NEW)

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") # from beginning of git history
Signed-off-by: Randy Dunlap <>
Cc: Geert Uytterhoeven <>
Cc: Greg Ungerer <>
 arch/m68k/Kconfig.machine |    1 +
 1 file changed, 1 insertion(+)

--- linux-next-20211001.orig/arch/m68k/Kconfig.machine
+++ linux-next-20211001/arch/m68k/Kconfig.machine
@@ -203,6 +203,7 @@ config INIT_LCD
 	int "Memory reservation (MiB)"
 	depends on (UCSIMM || UCDIMM)
+	default 0
 	  Reserve certain memory regions on 68x328 based boards.

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