hash: add switch fall-through comments for arm64

This fixes compiler warnings with GCC 7 for arm64 build.
Fixes: da8dcc27f644 ("hash: use armv8-a CRC32 instructions")

Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>

diff --git a/lib/librte_hash/rte_crc_arm64.h b/lib/librte_hash/rte_crc_arm64.h
index 7dd6334..2abe42a 100644 (file)
--- a/lib/librte_hash/rte_crc_arm64.h
+++ b/lib/librte_hash/rte_crc_arm64.h
@@ -110,8 +110,10 @@ rte_hash_crc_set_alg(uint8_t alg)
        case CRC32_ARM64:
                if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_CRC32))
                        alg = CRC32_SW;
+               /* fall-through */
        case CRC32_SW:
                crc32_alg = alg;
+               /* fall-through */
        default:
                break;
        }