From: Rich Felker <dalias@libc.org>
Date: Mon, 15 Feb 2016 18:36:33 +0000 (+0000)
Subject: sh: do not perform IPI-based cache flush except on boards that need it
X-Git-Tag: v4.8-rc1~15^2~5
X-Git-Url: http://git.cascardo.eti.br/?p=cascardo%2Flinux.git;a=commitdiff_plain;h=a1e262f6f126466f51d6955fb5bd6aaf0aacf68f

sh: do not perform IPI-based cache flush except on boards that need it

Signed-off-by: Rich Felker <dalias@libc.org>
---

diff --git a/arch/sh/mm/cache.c b/arch/sh/mm/cache.c
index 70cc52f2fab8..36554a9ea99b 100644
--- a/arch/sh/mm/cache.c
+++ b/arch/sh/mm/cache.c
@@ -42,6 +42,8 @@ static inline void cacheop_on_each_cpu(void (*func) (void *info), void *info,
 {
 	preempt_disable();
 
+	/* Needing IPI for cross-core flush is SHX3-specific. */
+#ifdef CONFIG_CPU_SHX3
 	/*
 	 * It's possible that this gets called early on when IRQs are
 	 * still disabled due to ioremapping by the boot CPU, so don't
@@ -49,6 +51,7 @@ static inline void cacheop_on_each_cpu(void (*func) (void *info), void *info,
 	 */
 	if (num_online_cpus() > 1)
 		smp_call_function(func, info, wait);
+#endif
 
 	func(info);