linux-kernel - [PATCH] powerpc: Don't opencode HAVE_EFFICIENT_UNALIGNED

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Date:   Sun,  2 May 2021 19:26:08 +0200
From:   Michal Suchanek <msuchanek@...e.de>
To:     linuxppc-dev@...ts.ozlabs.org
Cc:     Michal Suchanek <msuchanek@...e.de>,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Anton Blanchard <anton@...ba.org>, linux-kernel@...r.kernel.org
Subject: [PATCH] powerpc: Don't opencode HAVE_EFFICIENT_UNALIGNED_ACCESS

There is some disconnect between commit 8a18cc0c2c36 ("powerpc: Only
disable HAVE_EFFICIENT_UNALIGNED_ACCESS on POWER7 little endian") and
commit a75c380c7129 ("powerpc: Enable DCACHE_WORD_ACCESS on ppc64le").

The first defines HAVE_EFFICIENT_UNALIGNED_ACCESS for the purpose of
enabling DCACHE_WORD_ACCESS and the second opencodes it, and differently
at that.

Fixes: a75c380c7129 ("powerpc: Enable DCACHE_WORD_ACCESS on ppc64le")
Fixes: 8a18cc0c2c36 ("powerpc: Only disable HAVE_EFFICIENT_UNALIGNED_ACCESS on POWER7 little endian")
Signed-off-by: Michal Suchanek <msuchanek@...e.de>
---
 arch/powerpc/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 75b3afbfc378..b00c37097ca2 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -162,7 +162,7 @@ config PPC
 	select BUILDTIME_TABLE_SORT
 	select BUILD_ELF_V2			if PPC64 && CPU_LITTLE_ENDIAN
 	select CLONE_BACKWARDS
-	select DCACHE_WORD_ACCESS		if PPC64 && CPU_LITTLE_ENDIAN
+	select DCACHE_WORD_ACCESS		if HAVE_EFFICIENT_UNALIGNED_ACCESS
 	select DMA_OPS				if PPC64
 	select DMA_OPS_BYPASS			if PPC64
 	select ARCH_HAS_DMA_MAP_DIRECT 		if PPC64 && PPC_PSERIES
-- 
2.26.2