From 9a40ac86152c9cffd3dca482a15ddf9a8c5716b3 Mon Sep 17 00:00:00 2001 From: Khem Raj Date: Fri, 4 Jun 2010 04:05:15 +0100 Subject: ARM: 6164/1: Add kto and kfrom to input operands list. When functions incoming parameters are not in input operands list gcc 4.5 does not load the parameters into registers before calling this function but the inline assembly assumes valid addresses inside this function. This breaks the code because r0 and r1 are invalid when execution enters v4wb_copy_user_page () Also the constant needs to be used as third input operand so account for that as well. Tested on qemu arm. CC: Signed-off-by: Khem Raj Signed-off-by: Russell King --- arch/arm/mm/copypage-v4wb.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/arm/mm/copypage-v4wb.c') diff --git a/arch/arm/mm/copypage-v4wb.c b/arch/arm/mm/copypage-v4wb.c index 7c2eb55cd4a9..cb589cbb2b6c 100644 --- a/arch/arm/mm/copypage-v4wb.c +++ b/arch/arm/mm/copypage-v4wb.c @@ -27,7 +27,7 @@ v4wb_copy_user_page(void *kto, const void *kfrom) { asm("\ stmfd sp!, {r4, lr} @ 2\n\ - mov r2, %0 @ 1\n\ + mov r2, %2 @ 1\n\ ldmia r1!, {r3, r4, ip, lr} @ 4\n\ 1: mcr p15, 0, r0, c7, c6, 1 @ 1 invalidate D line\n\ stmia r0!, {r3, r4, ip, lr} @ 4\n\ @@ -44,7 +44,7 @@ v4wb_copy_user_page(void *kto, const void *kfrom) mcr p15, 0, r1, c7, c10, 4 @ 1 drain WB\n\ ldmfd sp!, {r4, pc} @ 3" : - : "I" (PAGE_SIZE / 64)); + : "r" (kto), "r" (kfrom), "I" (PAGE_SIZE / 64)); } void v4wb_copy_user_highpage(struct page *to, struct page *from, -- cgit v1.2.3