The (misplaced) comment doesn't make any sense, enforcing an
uninitialized RX buffer won't help with IRQ reduction.
So make the best use of all available RX buffers.
Signed-off-by: Julian Wiedmann <j...@linux.ibm.com>
---
drivers/s390/net/qeth_core_main.c | 16 ++++------------
1 file changed, 4 insertions(+), 12 deletions(-)
diff --git a/drivers/s390/net/qeth_core_main.c
b/drivers/s390/net/qeth_core_main.c
index c2e44853ac1a..bba1b54b8aa3 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -3022,6 +3022,7 @@ static unsigned int qeth_tx_select_bulk_max(struct
qeth_card *card,
static int qeth_init_qdio_queues(struct qeth_card *card)
{
+ unsigned int rx_bufs = card->qdio.in_buf_pool.buf_count;
unsigned int i;
int rc;
@@ -3033,16 +3034,14 @@ static int qeth_init_qdio_queues(struct qeth_card *card)
qeth_initialize_working_pool_list(card);
/*give only as many buffers to hardware as we have buffer pool entries*/
- for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; i++) {
+ for (i = 0; i < rx_bufs; i++) {
rc = qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
if (rc)
return rc;
}
- card->qdio.in_q->next_buf_to_init =
- card->qdio.in_buf_pool.buf_count - 1;
- rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
- card->qdio.in_buf_pool.buf_count - 1);
+ card->qdio.in_q->next_buf_to_init = QDIO_BUFNR(rx_bufs);
+ rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0, rx_bufs);
if (rc) {
QETH_CARD_TEXT_(card, 2, "1err%d", rc);
return rc;
@@ -3535,13 +3534,6 @@ static unsigned int qeth_rx_refill_queue(struct
qeth_card *card,
return 0;
}
- /*
- * according to old code it should be avoided to requeue all
- * 128 buffers in order to benefit from PCI avoidance.
- * this function keeps at least one buffer (the buffer at
- * 'index') un-requeued -> this buffer is the first buffer that
- * will be requeued the next time
- */
rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
queue->next_buf_to_init, count);
if (rc) {
--
2.17.1
