On 02/03/2015 01:42 PM, Guenter Roeck wrote:
> On Tue, Feb 03, 2015 at 06:20:10PM +1100, Stephen Rothwell wrote:
>> Hi all,
>>
>> Changes since 20150202:
>>
>> The target-updates tree gained a conflict against Linus' tree.
>>
>> The clk tree gained conflicts against the arm-soc tree.
>>
>> Non-merge commits (relative to Linus' tree): 7173
>> 7143 files changed, 301126 insertions(+), 167764 deletions(-)
>>
>> ----------------------------------------------------------------------------
>>
> Building arc:defconfig ... failed
> --------------
> Error log:
>
> drivers/built-in.o: In function `of_setup_earlycon':
> (.init.text+0xb3e): undefined reference to `arc_early_base_baud'
> drivers/built-in.o: In function `setup_earlycon':
> (.init.text+0xcd0): undefined reference to `arc_early_base_baud'
> make: *** [vmlinux] Error 1
>
> This is due to "ARC: Dynamically determine BASE_BAUD from DeviceTree".
> arc:defconfig does not define CONFIG_SERIAL_8250 and thus also not
> CONFIG_SERIAL_8250_CONSOLE, but it looks like it is mandatory
> after this patch.
>
> Guenter
Thanks for the report. Does the patch below fix the build breakage?
Regards,
Peter Hurley
--- >% ---
Subject: [PATCH] ARC: Fix earlycon build breakage
Commit ffb7fcd66f14 ("ARC: Dynamically determine BASE_BAUD from DeviceTree")
breaks arc:defconfig build:
drivers/built-in.o: In function `of_setup_earlycon':
(.init.text+0xb3e): undefined reference to `arc_early_base_baud'
drivers/built-in.o: In function `setup_earlycon':
(.init.text+0xcd0): undefined reference to `arc_early_base_baud'
make: *** [vmlinux] Error 1
BASE_BAUD is only required for earlycon, which should depend on
CONFIG_SERIAL_EARLYCON.
Reported-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Signed-off-by: Peter Hurley <peter@xxxxxxxxxxxxxxxxxx>
---
arch/arc/kernel/devtree.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arc/kernel/devtree.c b/arch/arc/kernel/devtree.c
index 5036d4c..e32b54a 100644
--- a/arch/arc/kernel/devtree.c
+++ b/arch/arc/kernel/devtree.c
@@ -17,7 +17,7 @@
#include <asm/clk.h>
#include <asm/mach_desc.h>
-#ifdef CONFIG_SERIAL_8250_CONSOLE
+#ifdef CONFIG_SERIAL_EARLYCON
static unsigned int __initdata arc_base_baud;
--
2.2.2
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