linux-kernel - [PATCH] arch64: export __flush_dcache

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Message-Id: <20190517200012.136519-1-salyzyn@android.com>
Date:   Fri, 17 May 2019 12:59:56 -0700
From:   Mark Salyzyn <salyzyn@...roid.com>
To:     linux-kernel@...r.kernel.org
Cc:     kernel-team@...roid.com, Mark Salyzyn <salyzyn@...roid.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH] arch64: export __flush_dcache_area

Some (out of tree modular) drivers feel a need to ensure
data is flushed to the DDR before continuing flow.

Signed-off-by: Mark Salyzyn <salyzyn@...roid.com>
Cc: linux-kernel@...r.kernel.org
Cc: kernel-team@...roid.com
---
 arch/arm64/mm/cache.S | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/mm/cache.S b/arch/arm64/mm/cache.S
index a194fd0e837f..70d7cb5c0bd2 100644
--- a/arch/arm64/mm/cache.S
+++ b/arch/arm64/mm/cache.S
@@ -120,6 +120,7 @@ ENTRY(__flush_dcache_area)
 	dcache_by_line_op civac, sy, x0, x1, x2, x3
 	ret
 ENDPIPROC(__flush_dcache_area)
+EXPORT_SYMBOL_GPL(__flush_dcache_area)
 
 /*
  *	__clean_dcache_area_pou(kaddr, size)
-- 
2.21.0.1020.gf2820cf01a-goog