powerpc/sstep: Avoid used uninitialized error

Older compilers think val may be used uninitialized:

  arch/powerpc/lib/sstep.c: In function 'emulate_loadstore':
  arch/powerpc/lib/sstep.c:2758:23: error: 'val' may be used uninitialized in this function

We know better, but initialise val to 0 to avoid breaking the build.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c
index 06dd61d8d48be0da3052053dae63b9aac44ecfcc..fb9f58b868e76ef0692e45fe874b6546cf74de37 100644 (file)
--- a/arch/powerpc/lib/sstep.c
+++ b/arch/powerpc/lib/sstep.c
@@ -2727,6 +2727,7 @@ int emulate_loadstore(struct pt_regs *regs, struct instruction_op *op)
                if (!address_ok(regs, ea, size))
                        return -EFAULT;
                err = 0;
+               val = 0;
                switch (size) {
 #ifdef __powerpc64__
                case 1: