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    Subject[PATCH] FRV: Fix no-hardware-breakpoint case
    Date
    If there is no hardware breakpoint support, modify_user_hw_breakpoint() tries
    to return a NULL pointer through as an 'int' return value:

    In file included from kernel/exit.c:53:
    include/linux/hw_breakpoint.h: In function 'modify_user_hw_breakpoint':
    include/linux/hw_breakpoint.h:96: warning: return makes integer from pointer without a cast

    Return 0 instead.

    Signed-off-by: David Howells <dhowells@redhat.com>
    ---

    include/linux/hw_breakpoint.h | 2 +-
    1 files changed, 1 insertions(+), 1 deletions(-)


    diff --git a/include/linux/hw_breakpoint.h b/include/linux/hw_breakpoint.h
    index 69f07a9..e268388 100644
    --- a/include/linux/hw_breakpoint.h
    +++ b/include/linux/hw_breakpoint.h
    @@ -93,7 +93,7 @@ register_user_hw_breakpoint(struct perf_event_attr *attr,
    struct task_struct *tsk) { return NULL; }
    static inline int
    modify_user_hw_breakpoint(struct perf_event *bp,
    - struct perf_event_attr *attr) { return NULL; }
    + struct perf_event_attr *attr) { return 0; }
    static inline struct perf_event *
    register_wide_hw_breakpoint_cpu(struct perf_event_attr *attr,
    perf_overflow_handler_t triggered,


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