• Ron Mercer's avatar
    qlge: bugfix: Fix shadow register endian issue. · 2b72c784
    Ron Mercer authored
    Shadow registers are consistent memory locations to which the chip
    echos ring indexes in little endian format.  These values need to
    be endian swapped before referencing.
    
    Note:
    The register pointer declaration uses the volatile modifier which
    causes warnings in checkpatch.
    Per Documentation/volatile-considered-harmful.txt:
      - Pointers to data structures in coherent memory which might be modified
        by I/O devices can, sometimes, legitimately be volatile.  A ring buffer
        used by a network adapter, where that adapter changes pointers to
        indicate which descriptors have been processed, is an example of this
        type of situation.
    Signed-off-by: default avatarRon Mercer <ron.mercer@qlogic.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    2b72c784
qlge.h 40.1 KB