diff options
author | Jan Glauber <jang@linux.vnet.ibm.com> | 2009-06-22 14:08:12 +0400 |
---|---|---|
committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2009-06-22 14:08:20 +0400 |
commit | 36e3e72120e27939233e4bd88a8d74b3a2377428 (patch) | |
tree | b9630dd367096651a23f5425f70f2c28ec886970 /drivers | |
parent | 9a2c160a8cbd5b3253672b3bac462c64d0d2eef7 (diff) | |
download | linux-36e3e72120e27939233e4bd88a8d74b3a2377428.tar.xz |
[S390] qdio: extract all primed SBALs at once
For devices without QIOASSIST primed SBALS were extracted in a loop.
Remove the loop since get_buf_states can already return more than
one primed SBAL.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/s390/cio/qdio_main.c | 34 |
1 files changed, 6 insertions, 28 deletions
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c index 127e78eef651..779b7741d495 100644 --- a/drivers/s390/cio/qdio_main.c +++ b/drivers/s390/cio/qdio_main.c @@ -476,19 +476,13 @@ static int get_inbound_buffer_frontier(struct qdio_q *q) count = min(atomic_read(&q->nr_buf_used), QDIO_MAX_BUFFERS_MASK); stop = add_buf(q->first_to_check, count); - /* - * No siga sync here, as a PCI or we after a thin interrupt - * will sync the queues. - */ - - /* need to set count to 1 for non-qebsm */ - if (!is_qebsm(q)) - count = 1; - -check_next: if (q->first_to_check == stop) goto out; + /* + * No siga sync here, as a PCI or we after a thin interrupt + * already sync'ed the queues. + */ count = get_buf_states(q, q->first_to_check, &state, count, 1); if (!count) goto out; @@ -496,14 +490,9 @@ check_next: switch (state) { case SLSB_P_INPUT_PRIMED: inbound_primed(q, count); - /* - * No siga-sync needed for non-qebsm here, as the inbound queue - * will be synced on the next siga-r, resp. - * qdio_inbound_q_done will do the siga-sync. - */ q->first_to_check = add_buf(q->first_to_check, count); atomic_sub(count, &q->nr_buf_used); - goto check_next; + break; case SLSB_P_INPUT_ERROR: announce_buffer_error(q, count); /* process the buffer, the upper layer will take care of it */ @@ -641,11 +630,6 @@ static int get_outbound_buffer_frontier(struct qdio_q *q) count = min(atomic_read(&q->nr_buf_used), QDIO_MAX_BUFFERS_MASK); stop = add_buf(q->first_to_check, count); - /* need to set count to 1 for non-qebsm */ - if (!is_qebsm(q)) - count = 1; - -check_next: if (q->first_to_check == stop) return q->first_to_check; @@ -660,13 +644,7 @@ check_next: atomic_sub(count, &q->nr_buf_used); q->first_to_check = add_buf(q->first_to_check, count); - /* - * We fetch all buffer states at once. get_buf_states may - * return count < stop. For QEBSM we do not loop. - */ - if (is_qebsm(q)) - break; - goto check_next; + break; case SLSB_P_OUTPUT_ERROR: announce_buffer_error(q, count); /* process the buffer, the upper layer will take care of it */ |