From: Dave Jones <davej@codemonkey.org.uk>
Date: Fri, 14 Oct 2016 18:26:24 +0000 (-0400)
Subject: pkeys: Remove easily triggered WARN
X-Git-Tag: v4.9-rc1~24
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=496063426dece3f47e21f9f3387205d6ca03bd2a;p=platform%2Fkernel%2Flinux-exynos.git

pkeys: Remove easily triggered WARN

This easy-to-trigger warning shows up instantly when running
Trinity on a kernel with CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS disabled.

At most this should have been a printk, but the -EINVAL alone should be more
than adequate indicator that something isn't available.

Signed-off-by: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/include/linux/pkeys.h b/include/linux/pkeys.h
index e4c08c1..a1bacf1 100644
--- a/include/linux/pkeys.h
+++ b/include/linux/pkeys.h
@@ -25,7 +25,6 @@ static inline int mm_pkey_alloc(struct mm_struct *mm)
 
 static inline int mm_pkey_free(struct mm_struct *mm, int pkey)
 {
-	WARN_ONCE(1, "free of protection key when disabled");
 	return -EINVAL;
 }