From: Michael Ellerman <mpe@ellerman.id.au>
Date: Fri, 1 Sep 2017 21:48:17 +0000 (+1000)
Subject: powerpc/sstep: Avoid used uninitialized error
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3b79b26101936bbdb7a5c69161c69d65a1108fb0;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

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 06dd61d8d48b..fb9f58b868e7 100644
--- 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: