wait_ticks() calls get_ticks() without building a back chain which makes gdb unhappy when doing back trace. This can also cause improper memory accesses.

Signed-off-by: Joakim Tjernlund Joakim.Tjernlund@transmode.se --- arch/powerpc/lib/ticks.S | 7 +++++-- 1 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/lib/ticks.S b/arch/powerpc/lib/ticks.S index b8d25b7..1781039 100644 --- a/arch/powerpc/lib/ticks.S +++ b/arch/powerpc/lib/ticks.S @@ -47,7 +47,9 @@ get_ticks: */ .globl wait_ticks wait_ticks: - mflr r8 /* save link register */ + stwu r1, -16(r1) + mflr r0 /* save link register */ + stw r0, 20(r1) /* Use r0 or GDB will be unhappy */ mr r7, r3 /* save tick count */ bl get_ticks /* Get start time */

@@ -61,5 +63,6 @@ wait_ticks: subfe. r3, r3, r6 bge 1b /* Loop until time expired */

- mtlr r8 /* restore link register */ + mtlr r0 /* restore link register */ + addi r1,r1,16 blr