[Buildroot] [PATCH] arch/arc: fix atmoics selection

* [Buildroot] [PATCH] arch/arc: fix atmoics selection
@ 2014-09-11 19:56 Yann E. MORIN
  2014-09-11 20:34 ` Thomas Petazzoni
  0 siblings, 1 reply; 3+ messages in thread
From: Yann E. MORIN @ 2014-09-11 19:56 UTC (permalink / raw)
  To: buildroot

Due to a kconfig limitation, we can't select a no-prompt symbol that
gets its dependencies by be conditionally re-defined in one or more
if-blocks, like we currently do for BR2_ARCH_HAS_ATOMICS.

As a workaround to this issue, we just redefine that symbol in the arc
if-block, like we do for all other archtectures, except that in the arc
case, the default value is conditional.

Reported-by: Anton Kolesov <Anton.Kolesov@synopsys.com>
[yann.morin.1998 at free.fr: indepently re-done a patch similar to the one
 Thomas made on his own]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---
 arch/Config.in.arc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/Config.in.arc b/arch/Config.in.arc
index 8a7f290..fcb5d7d 100644
--- a/arch/Config.in.arc
+++ b/arch/Config.in.arc
@@ -1,7 +1,9 @@
 # Choise of atomic instructions presence
 config BR2_ARC_ATOMIC_EXT
 	bool "Atomic extension (LLOCK/SCOND instructions)"
-	select BR2_ARCH_HAS_ATOMICS
+
+config BR2_ARCH_HAS_ATOMICS
+	default y if BR2_ARC_ATOMIC_EXT
 
 config BR2_ARCH
 	default "arc"	if BR2_arcle
-- 
1.9.1

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