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qeth: buffer count imbalance

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The used buffers counter is not incremented in case of an error so
the counter can become negative. Increment the used buffers counter
before checking for errors.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jan Glauber 2010-12-08 02:58:01 +00:00 committed by David S. Miller
parent 91d4576bfe
commit a6a5ff2697
1 changed files with 1 additions and 1 deletions
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2
drivers/s390/net/qeth_core_main.c
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@ -2840,6 +2840,7 @@ static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
queue->card->perf_stats.outbound_do_qdio_time +=
qeth_get_micros() -
queue->card->perf_stats.outbound_do_qdio_start_time;
atomic_add(count, &queue->used_buffers);
if (rc) {
queue->card->stats.tx_errors += count;
/* ignore temporary SIGA errors without busy condition */
@ -2853,7 +2854,6 @@ static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
qeth_schedule_recovery(queue->card);
return;
}
atomic_add(count, &queue->used_buffers);
if (queue->card->options.performance_stats)
queue->card->perf_stats.bufs_sent += count;
}