From: James Hogan <james.hogan@imgtec.com>
Date: Thu, 1 Sep 2016 16:30:12 +0000 (+0100)
Subject: MIPS: cacheflush: Use __flush_icache_user_range()
X-Git-Tag: v5.15~12636^2~70
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8e3a9f4c3ab6dd0da5e8a89bd252518ff2ee5e3a;p=platform%2Fkernel%2Flinux-starfive.git

MIPS: cacheflush: Use __flush_icache_user_range()

The cacheflush(2) system call uses flush_icache_range() to flush a range
of usermode addresses from the icache, so change it to utilise the new
__flush_icache_user_range() API to allow the more generic
flush_icache_range() to be changed to work on kernel addresses only.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Leonid Yegoshin <leonid.yegoshin@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14153/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---

diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c
index 5a644c3..7ec0847 100644
--- a/arch/mips/mm/cache.c
+++ b/arch/mips/mm/cache.c
@@ -78,7 +78,7 @@ SYSCALL_DEFINE3(cacheflush, unsigned long, addr, unsigned long, bytes,
 	if (!access_ok(VERIFY_WRITE, (void __user *) addr, bytes))
 		return -EFAULT;
 
-	flush_icache_range(addr, addr + bytes);
+	__flush_icache_user_range(addr, addr + bytes);
 
 	return 0;
 }