[ARM] fix a couple clear_user_highpage assembly constraints
In all cases the kaddr is assigned an input register even though it is
modified in the assembly code. Let's assign a new variable to the
modified value and mark those inline asm with volatile otherwise they
get optimized away because the output variable is otherwise not used.
Also fix a few conversion errors in copypage-feroceon.c and
copypage-v4mc.c.
Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mm/copypage-xsc3.c b/arch/arm/mm/copypage-xsc3.c
index 0e7cb32..39a9945 100644
--- a/arch/arm/mm/copypage-xsc3.c
+++ b/arch/arm/mm/copypage-xsc3.c
@@ -89,9 +89,9 @@
*/
void xsc3_mc_clear_user_highpage(struct page *page, unsigned long vaddr)
{
- void *kaddr = kmap_atomic(page, KM_USER0);
- asm("\
- mov r1, %1 \n\
+ void *ptr, *kaddr = kmap_atomic(page, KM_USER0);
+ asm volatile ("\
+ mov r1, %2 \n\
mov r2, #0 \n\
mov r3, #0 \n\
1: mcr p15, 0, %0, c7, c6, 1 @ invalidate line\n\
@@ -101,8 +101,8 @@
strd r2, [%0], #8 \n\
subs r1, r1, #1 \n\
bne 1b"
- :
- : "r" (kaddr), "I" (PAGE_SIZE / 32)
+ : "=r" (ptr)
+ : "0" (kaddr), "I" (PAGE_SIZE / 32)
: "r1", "r2", "r3");
kunmap_atomic(kaddr, KM_USER0);
}