diff options
| author |   Julian Wiedmann <jwi@linux.ibm.com> | 2018-08-09 14:48:01 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-08-09 14:02:50 -0700 |
| commit | 24142fd8d87d763bfc401cb0c496bb1050fea0b8 (patch) | |
| tree | ccad079c3f02b82832bcfc13e2904224232d317e /drivers/s390 | |
| parent | s390/qeth: use qeth_setup_ccw() to set up all CCWs (diff) | |
| download | linux-dev-24142fd8d87d763bfc401cb0c496bb1050fea0b8.tar.xz linux-dev-24142fd8d87d763bfc401cb0c496bb1050fea0b8.zip | |
s390/qeth: do basic setup for data channel
The data channel currently doesn't need a setup operation, because we
don't use pre-allocated cmd buffers for its IO. But subsequent changes
will introduce further setup that also applies to the data channel.
This refactors things a bit, so that the new stuff can then be
automatically applied to all channels.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/net/qeth_core_main.c | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 714c71e30b7f..eab8c4a182b0 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -899,11 +899,19 @@ out: qeth_release_buffer(channel, iob); } -static int qeth_setup_channel(struct qeth_channel *channel) +static int qeth_setup_channel(struct qeth_channel *channel, bool alloc_buffers) { int cnt; QETH_DBF_TEXT(SETUP, 2, "setupch"); + + channel->state = CH_STATE_DOWN; + atomic_set(&channel->irq_pending, 0); + init_waitqueue_head(&channel->wait_q); + + if (!alloc_buffers) + return 0; + for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) { channel->iob[cnt].data = kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL); @@ -920,10 +928,8 @@ static int qeth_setup_channel(struct qeth_channel *channel) return -ENOMEM; } channel->io_buf_no = 0; - atomic_set(&channel->irq_pending, 0); spin_lock_init(&channel->iob_lock); - init_waitqueue_head(&channel->wait_q); return 0; } @@ -1448,13 +1454,9 @@ static void qeth_start_kernel_thread(struct work_struct *work) static void qeth_buffer_reclaim_work(struct work_struct *); static int qeth_setup_card(struct qeth_card *card) { - QETH_DBF_TEXT(SETUP, 2, "setupcrd"); QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); - card->read.state = CH_STATE_DOWN; - card->write.state = CH_STATE_DOWN; - card->data.state = CH_STATE_DOWN; card->state = CARD_STATE_DOWN; card->lan_online = 0; card->read_or_write_problem = 0; @@ -1504,15 +1506,19 @@ static struct qeth_card *qeth_alloc_card(void) if (!card) goto out; QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); - if (qeth_setup_channel(&card->read)) + if (qeth_setup_channel(&card->read, true)) goto out_ip; - if (qeth_setup_channel(&card->write)) + if (qeth_setup_channel(&card->write, true)) goto out_channel; + if (qeth_setup_channel(&card->data, false)) + goto out_data; card->options.layer2 = -1; card->qeth_service_level.seq_print = qeth_core_sl_print; register_service_level(&card->qeth_service_level); return card; +out_data: + qeth_clean_channel(&card->write); out_channel: qeth_clean_channel(&card->read); out_ip: |