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authorRussell King <rmk+kernel@arm.linux.org.uk>2009-12-23 20:54:31 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2009-12-23 20:54:31 +0100
commit52e8bfd81af5492a14cc3a4641d4c80d05b66bdb (patch)
tree1489eb5f4ecac93071fc9995afa298a5a3f10e92 /arch/arm/mm/fault-armv.c
parentARM: 5857/1: ARM: dmabounce: fix build (diff)
downloadlinux-52e8bfd81af5492a14cc3a4641d4c80d05b66bdb.tar.xz
linux-52e8bfd81af5492a14cc3a4641d4c80d05b66bdb.zip
ARM: Fix wrong shared bit for CPU write buffer bug test
It is unpredictable to have the same memory mapped using different shared bit settings for ARMv6 and ARMv7 CPUs. Fix this for the CPU write buffer bug test. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm/fault-armv.c')
-rw-r--r--arch/arm/mm/fault-armv.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/arm/mm/fault-armv.c b/arch/arm/mm/fault-armv.c
index 729602291958..56ee15321b00 100644
--- a/arch/arm/mm/fault-armv.c
+++ b/arch/arm/mm/fault-armv.c
@@ -207,9 +207,8 @@ void __init check_writebuffer_bugs(void)
page = alloc_page(GFP_KERNEL);
if (page) {
unsigned long *p1, *p2;
- pgprot_t prot = __pgprot(L_PTE_PRESENT|L_PTE_YOUNG|
- L_PTE_DIRTY|L_PTE_WRITE|
- L_PTE_MT_BUFFERABLE);
+ pgprot_t prot = __pgprot_modify(PAGE_KERNEL,
+ L_PTE_MT_MASK, L_PTE_MT_BUFFERABLE);
p1 = vmap(&page, 1, VM_IOREMAP, prot);
p2 = vmap(&page, 1, VM_IOREMAP, prot);