From: Ingo Molnar <mingo@elte.hu>
Date: Wed, 30 Jan 2008 12:34:03 +0000 (+0100)
Subject: x86: return -EINVAL in __change_page_attr(), instead of 0
X-Git-Tag: v3.12-rc1~24034^2~86
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f5a50ce1bf53a07cb7d0bab1a87e62cc4f34f0ab;p=kernel%2Fkernel-generic.git

x86: return -EINVAL in __change_page_attr(), instead of 0

careful: might change driver behavior - but this is the right
return value.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

diff --git a/arch/x86/mm/pageattr_64.c b/arch/x86/mm/pageattr_64.c
index 60cfb68..4053832d 100644
--- a/arch/x86/mm/pageattr_64.c
+++ b/arch/x86/mm/pageattr_64.c
@@ -135,7 +135,7 @@ __change_page_attr(unsigned long address, struct page *page, pgprot_t prot)
 repeat:
 	kpte = lookup_address(address, &level);
 	if (!kpte)
-		return 0;
+		return -EINVAL;
 
 	kpte_page = virt_to_page(kpte);
 	BUG_ON(PageLRU(kpte_page));