openrisc: use scratch regs in atomic syscall

The function sys_or1k_atomic was using call-saved registers without
restoring their value before returning.  This is a faux pas: either
we need to restore their values or use scratch regs; the latter is
less code so that's the route this patch takes.

Thanks to David Hennerström for doing most of the heavy-lifting in
tracking this one down.

Reported-by: Davd Hennerström <[email protected]>
Signed-off-by: Jonas Bonn <[email protected]>

0 files changed, 0 insertions, 0 deletions