MIPS: Annotate fall-through in kvm/emulate.c

kvm_compute_return_epc contains a switch statement with an intentional
fall-through from a case handling jal (jump and link) instructions to
one handling j (jump) instructions. With -Wimplicit-fallthrough this
triggers a compile error (due to -Werror being enabled for arch/mips).

This can be reproduced using malta_kvm_defconfig.

Fix this by annotating the intentional fall-through.

Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org

diff --git a/arch/mips/kvm/emulate.c b/arch/mips/kvm/emulate.c
index e5de6bac81979122f0a8464d66c2df81c1eeafd2..754094b40a75332c1f8cb58266a5181a44ef142d 100644 (file)
--- a/arch/mips/kvm/emulate.c
+++ b/arch/mips/kvm/emulate.c
@@ -140,6 +140,7 @@ static int kvm_compute_return_epc(struct kvm_vcpu *vcpu, unsigned long instpc,
                /* These are unconditional and in j_format. */
        case jal_op:
                arch->gprs[31] = instpc + 8;
+               /* fall through */
        case j_op:
                epc += 4;
                epc >>= 28;