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    Subject[PATCH 0/4] use BUG_ON correctly, v4
    Most of BUG_ON() implementations use unlikely() internally for better
    branch prediction results. The following method to use BUG_ON() with
    an explicit unlikely() doesn't make things better and is unwelcome:
    Source code should use BUG_ON() just with condition code.

    For arch implementation of BUG_ON(), there are feed backs for v2 patch
    set from MIPS and PowerPC developers than neither explicit no implicit
    unlikely() does help anything.

    Therefore using unlikely() explicit with BUG_ON() is always a bug. This
    patch set removes all incorrect BUG_ON() usage.

    Patch "Staging: wl_cfg80211.c: use BUG_ON correctly" is merged into
    upstream (commit d7ddd169), no longer in v4 patch set. For v4
    patch set, proper maintainers are added into Cc list by the help of

    Cc: Greg KH <>
    Cc: Yong Zhang <>
    Cc: Wang Cong <>
    Signed-off-by: Coly Li <>
    drivers/dma/iop-adma.c | 6 +++---
    drivers/dma/mv_xor.c | 6 +++---
    drivers/dma/ppc4xx/adma.c | 8 ++++----
    drivers/scsi/scsi_lib.c | 4 ++--
    4 files changed, 12 insertions(+), 12 deletions(-)

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