From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 18 Apr 2008 19:32:22 +0000 (+0200)
Subject: x86 PAT: fix mmap() of holes
X-Git-Tag: v2.6.26-rc1~1139
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d1a4be630fb068f251d64b62919f143c49ca8057;p=linux-2.6

x86 PAT: fix mmap() of holes

do not return a -EINVAL when mmap()-ing PCI holes.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
---

diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index 7d9517abc9..f7823a1728 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -542,7 +542,7 @@ static int __change_page_attr(struct cpa_data *cpa, int primary)
 repeat:
 	kpte = lookup_address(address, &level);
 	if (!kpte)
-		return primary ? -EINVAL : 0;
+		return 0;
 
 	old_pte = *kpte;
 	if (!pte_val(old_pte)) {