From a7b9f671f2d141528491c346e21e8a179cee9d21 Mon Sep 17 00:00:00 2001 From: LEROY Christophe Date: Mon, 19 Jan 2015 17:04:38 +0100 Subject: powerpc32: adds handling of _PAGE_RO Some powerpc like the 8xx don't have a RW bit in PTE bits but a RO (Read Only) bit. This patch implements the handling of a _PAGE_RO flag to be used in place of _PAGE_RW Signed-off-by: Christophe Leroy [scottwood@freescale.com: fix whitespace] Signed-off-by: Scott Wood --- arch/powerpc/mm/pgtable_32.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/powerpc/mm/pgtable_32.c') diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c index 6eec88685a71..833139620431 100644 --- a/arch/powerpc/mm/pgtable_32.c +++ b/arch/powerpc/mm/pgtable_32.c @@ -146,7 +146,7 @@ void __iomem * ioremap_prot(phys_addr_t addr, unsigned long size, unsigned long flags) { /* writeable implies dirty for kernel addresses */ - if (flags & _PAGE_RW) + if ((flags & (_PAGE_RW | _PAGE_RO)) != _PAGE_RO) flags |= _PAGE_DIRTY | _PAGE_HWWRITE; /* we don't want to let _PAGE_USER and _PAGE_EXEC leak out */ -- cgit v1.2.3