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    Subject[Patch -tip 3/3] Tracing/ftrace: Don't consume entries unhandled by mmiotrace
    When mmiotrace can't handle an entry output, it returns 1.
    It should return 0 to relay on other output functions.

    Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
    ---
    diff --git a/kernel/trace/trace_mmiotrace.c b/kernel/trace/trace_mmiotrace.c
    index a108c32..6fe1315 100644
    --- a/kernel/trace/trace_mmiotrace.c
    +++ b/kernel/trace/trace_mmiotrace.c
    @@ -277,7 +277,8 @@ static int mmio_print_line(struct trace_iterator *iter)
    case TRACE_PRINT:
    return mmio_print_mark(iter);
    default:
    - return 1; /* ignore unknown entries */
    + return 0; /* ignore unknown entries whithout consuming */
    }
    }
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