bfa_q_prev - Linux

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bfa_q_prev(_qe) = (struct list_head *) NULL; \

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bfa_q_prev(bfa_q_next(*((struct list_head **) _qe))) = \

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*((struct list_head **) (_qe)) = bfa_q_prev(_q); \

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bfa_q_next(bfa_q_prev(*((struct list_head **) _qe))) = \

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bfa_q_prev(_q) = bfa_q_prev(*(struct list_head **) _qe);\