@@ -3692,24 +3692,27 @@ static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
queue->queue_no, index, count);
- /* Fake the TX completion interrupt: */
- if (IS_IQD(card)) {
- unsigned int frames = READ_ONCE(queue->max_coalesced_frames);
- unsigned int usecs = READ_ONCE(queue->coalesce_usecs);
+ switch (rc) {
+ case 0:
+ case -ENOBUFS:
+ /* ignore temporary SIGA errors without busy condition */
- if (frames && queue->coalesced_frames >= frames) {
- napi_schedule(&queue->napi);
- queue->coalesced_frames = 0;
- QETH_TXQ_STAT_INC(queue, coal_frames);
- } else if (usecs) {
- qeth_tx_arm_timer(queue, usecs);
+ /* Fake the TX completion interrupt: */
+ if (IS_IQD(card)) {
+ unsigned int frames = READ_ONCE(queue->max_coalesced_frames);
+ unsigned int usecs = READ_ONCE(queue->coalesce_usecs);
+
+ if (frames && queue->coalesced_frames >= frames) {
+ napi_schedule(&queue->napi);
+ queue->coalesced_frames = 0;
+ QETH_TXQ_STAT_INC(queue, coal_frames);
+ } else if (usecs) {
+ qeth_tx_arm_timer(queue, usecs);
+ }
}
- }
- if (rc) {
- /* ignore temporary SIGA errors without busy condition */
- if (rc == -ENOBUFS)
- return;
+ break;
+ default:
QETH_CARD_TEXT(queue->card, 2, "flushbuf");
QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
@@ -3719,7 +3722,6 @@ static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
/* this must not happen under normal circumstances. if it
* happens something is really wrong -> recover */
qeth_schedule_recovery(queue->card);
- return;
}
}
When do_qdio() returns with an unexpected error, qeth_flush_buffers() kicks off a recovery action. In such a case there's no point in starting TX completion processing, the device gets torn down anyway. So take a closer look at do_qdio()'s return value, and skip the TX completion processing accordingly. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> --- drivers/s390/net/qeth_core_main.c | 34 ++++++++++++++++--------------- 1 file changed, 18 insertions(+), 16 deletions(-)