From: Jan Glauber The ACKnowledgement state should be set on the newest SBAL so an adapter interrupt surpression check needs to scan fewer SBALs. Signed-off-by: Jan Glauber Signed-off-by: Martin Schwidefsky --- drivers/s390/cio/qdio_main.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) Index: quilt-2.6/drivers/s390/cio/qdio_main.c =================================================================== --- quilt-2.6.orig/drivers/s390/cio/qdio_main.c +++ quilt-2.6/drivers/s390/cio/qdio_main.c @@ -440,12 +440,16 @@ static inline void inbound_primed(struct /* reset the previous ACK but first set the new one */ set_buf_state(q, new, SLSB_P_INPUT_ACK); set_buf_state(q, q->last_move_ftc, SLSB_P_INPUT_NOT_INIT); - } - else { + } else { q->u.in.polling = 1; - set_buf_state(q, q->first_to_check, SLSB_P_INPUT_ACK); + set_buf_state(q, new, SLSB_P_INPUT_ACK); } + /* + * last_move_ftc points to the ACK'ed buffer and not to the last turns + * first_to_check like for qebsm. Since it is only used to check if + * the queue front moved in qdio_inbound_q_done this is not a problem. + */ q->last_move_ftc = new; count--; if (!count) @@ -455,7 +459,7 @@ static inline void inbound_primed(struct * Need to change all PRIMED buffers to NOT_INIT, otherwise * we're loosing initiative in the thinint code. */ - set_buf_states(q, next_buf(q->first_to_check), SLSB_P_INPUT_NOT_INIT, + set_buf_states(q, q->first_to_check, SLSB_P_INPUT_NOT_INIT, count); } @@ -1480,7 +1484,6 @@ static void handle_inbound(struct qdio_q if (q->u.in.ack_count <= 0) { q->u.in.polling = 0; q->u.in.ack_count = 0; - /* TODO: must we set last_move_ftc to something meaningful? */ goto set; } q->last_move_ftc = add_buf(q->last_move_ftc, diff); -- blue skies, Martin. "Reality continues to ruin my life." - Calvin. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/