linux-kernel - [PATCH] xtensa: fix kconfig unmet dependency warning for HAVE_FUTEX

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Date:   Wed, 26 May 2021 00:03:37 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     linux-kernel@...r.kernel.org
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        Max Filippov <jcmvbkbc@...il.com>,
        Chris Zankel <chris@...kel.net>, linux-xtensa@...ux-xtensa.org
Subject: [PATCH] xtensa: fix kconfig unmet dependency warning for HAVE_FUTEX_CMPXCHG

XTENSA should only select HAVE_FUTEX_CMPXCHG when FUTEX is
set/enabled. This prevents a kconfig warning.

WARNING: unmet direct dependencies detected for HAVE_FUTEX_CMPXCHG
  Depends on [n]: FUTEX [=n]
  Selected by [y]:
  - XTENSA [=y] && !MMU [=n]

Fixes: d951ba21b959 ("xtensa: nommu: select HAVE_FUTEX_CMPXCHG")
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Cc: Max Filippov <jcmvbkbc@...il.com>
Cc: Chris Zankel <chris@...kel.net>
Cc: linux-xtensa@...ux-xtensa.org
---
 arch/xtensa/Kconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-next-20210525.orig/arch/xtensa/Kconfig
+++ linux-next-20210525/arch/xtensa/Kconfig
@@ -30,7 +30,7 @@ config XTENSA
 	select HAVE_DMA_CONTIGUOUS
 	select HAVE_EXIT_THREAD
 	select HAVE_FUNCTION_TRACER
-	select HAVE_FUTEX_CMPXCHG if !MMU
+	select HAVE_FUTEX_CMPXCHG if !MMU && FUTEX
 	select HAVE_HW_BREAKPOINT if PERF_EVENTS
 	select HAVE_IRQ_TIME_ACCOUNTING
 	select HAVE_PCI