[SPARC]: Respect vm_page_prot in io_remap_page_range().
Make sure the callers do a pgprot_noncached() on
vma->vm_page_prot.
Pointed out by Hugh Dickens.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/mm/srmmu.c b/arch/sparc/mm/srmmu.c
index c664b96..27b0e0b 100644
--- a/arch/sparc/mm/srmmu.c
+++ b/arch/sparc/mm/srmmu.c
@@ -2130,6 +2130,13 @@
return pte_val(pte) >> SRMMU_PTE_FILE_SHIFT;
}
+static pgprot_t srmmu_pgprot_noncached(pgprot_t prot)
+{
+ prot &= ~__pgprot(SRMMU_CACHE);
+
+ return prot;
+}
+
/* Load up routines and constants for sun4m and sun4d mmu */
void __init ld_mmu_srmmu(void)
{
@@ -2150,9 +2157,9 @@
BTFIXUPSET_INT(page_readonly, pgprot_val(SRMMU_PAGE_RDONLY));
BTFIXUPSET_INT(page_kernel, pgprot_val(SRMMU_PAGE_KERNEL));
page_kernel = pgprot_val(SRMMU_PAGE_KERNEL);
- pg_iobits = SRMMU_VALID | SRMMU_WRITE | SRMMU_REF;
/* Functions */
+ BTFIXUPSET_CALL(pgprot_noncached, srmmu_pgprot_noncached, BTFIXUPCALL_NORM);
#ifndef CONFIG_SMP
BTFIXUPSET_CALL(___xchg32, ___xchg32_sun4md, BTFIXUPCALL_SWAPG1G2);
#endif