From: Olof Johansson <olof@lixom.net>
Date: Tue, 17 Dec 2019 04:07:04 +0000 (-0800)
Subject: riscv: export flush_icache_all to modules
X-Git-Tag: v5.4.13~18
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=ef75fc2e63136be4c1194b0802025eab6241c508;p=thirdparty%2Fkernel%2Fstable.git

riscv: export flush_icache_all to modules

[ Upstream commit 1833e327a5ea1d1f356fbf6ded0760c9ff4b0594 ]

This is needed by LKDTM (crash dump test module), it calls
flush_icache_range(), which on RISC-V turns into flush_icache_all(). On
other architectures, the actual implementation is exported, so follow
that precedence and export it here too.

Fixes build of CONFIG_LKDTM that fails with:
ERROR: "flush_icache_all" [drivers/misc/lkdtm/lkdtm.ko] undefined!

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/arch/riscv/mm/cacheflush.c b/arch/riscv/mm/cacheflush.c
index 3f15938dec893..c54bd3c799552 100644
--- a/arch/riscv/mm/cacheflush.c
+++ b/arch/riscv/mm/cacheflush.c
@@ -14,6 +14,7 @@ void flush_icache_all(void)
 {
 	sbi_remote_fence_i(NULL);
 }
+EXPORT_SYMBOL(flush_icache_all);
 
 /*
  * Performs an icache flush for the given MM context.  RISC-V has no direct