From 973bd9937569146de0917f54f05b2942f8257912 Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Fri, 6 Jan 2006 00:19:07 -0800 Subject: [PATCH] s390: atomic primitives Hugh Dickins Fix the broken atomic_cmpxchg primitive. Add atomic_sub_and_test, atomic64_sub_return, atomic64_sub_and_test, atomic64_cmpxchg, atomic64_add_unless and atomic64_inc_not_zero. Replace old style atomic_compare_and_swap by atomic_cmpxchg. Shorten the whole header by defining most primitives with the two inline functions atomic_add_return and atomic_sub_return. In addition this patch contains the s390 related fixes of Hugh's "mm: fill arch atomic64 gaps" patch. Signed-off-by: Martin Schwidefsky Signed-off-by: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/s390/net/qeth_main.c | 20 +++++++++----------- 1 file changed, 9 insertions(+), 11 deletions(-) (limited to 'drivers/s390/net/qeth_main.c') diff --git a/drivers/s390/net/qeth_main.c b/drivers/s390/net/qeth_main.c index f8f55cc468b..7b2663f2781 100644 --- a/drivers/s390/net/qeth_main.c +++ b/drivers/s390/net/qeth_main.c @@ -1396,7 +1396,7 @@ qeth_idx_activate_get_answer(struct qeth_channel *channel, channel->ccw.cda = (__u32) __pa(iob->data); wait_event(card->wait_q, - atomic_compare_and_swap(0,1,&channel->irq_pending) == 0); + atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); QETH_DBF_TEXT(setup, 6, "noirqpnd"); spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); rc = ccw_device_start(channel->ccwdev, @@ -1463,7 +1463,7 @@ qeth_idx_activate_channel(struct qeth_channel *channel, memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2); wait_event(card->wait_q, - atomic_compare_and_swap(0,1,&channel->irq_pending) == 0); + atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); QETH_DBF_TEXT(setup, 6, "noirqpnd"); spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); rc = ccw_device_start(channel->ccwdev, @@ -1616,7 +1616,7 @@ qeth_issue_next_read(struct qeth_card *card) } qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE); wait_event(card->wait_q, - atomic_compare_and_swap(0,1,&card->read.irq_pending) == 0); + atomic_cmpxchg(&card->read.irq_pending, 0, 1) == 0); QETH_DBF_TEXT(trace, 6, "noirqpnd"); rc = ccw_device_start(card->read.ccwdev, &card->read.ccw, (addr_t) iob, 0, 0); @@ -1882,7 +1882,7 @@ qeth_send_control_data(struct qeth_card *card, int len, spin_unlock_irqrestore(&card->lock, flags); QETH_DBF_HEX(control, 2, iob->data, QETH_DBF_CONTROL_LEN); wait_event(card->wait_q, - atomic_compare_and_swap(0,1,&card->write.irq_pending) == 0); + atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0); qeth_prepare_control_data(card, len, iob); if (IS_IPA(iob->data)) timer.expires = jiffies + QETH_IPA_TIMEOUT; @@ -1924,7 +1924,7 @@ qeth_osn_send_control_data(struct qeth_card *card, int len, QETH_DBF_TEXT(trace, 5, "osndctrd"); wait_event(card->wait_q, - atomic_compare_and_swap(0,1,&card->write.irq_pending) == 0); + atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0); qeth_prepare_control_data(card, len, iob); QETH_DBF_TEXT(trace, 6, "osnoirqp"); spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); @@ -4236,9 +4236,8 @@ qeth_do_send_packet_fast(struct qeth_card *card, struct qeth_qdio_out_q *queue, QETH_DBF_TEXT(trace, 6, "dosndpfa"); /* spin until we get the queue ... */ - while (atomic_compare_and_swap(QETH_OUT_Q_UNLOCKED, - QETH_OUT_Q_LOCKED, - &queue->state)); + while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, + QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); /* ... now we've got the queue */ index = queue->next_buf_to_fill; buffer = &queue->bufs[queue->next_buf_to_fill]; @@ -4292,9 +4291,8 @@ qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, QETH_DBF_TEXT(trace, 6, "dosndpkt"); /* spin until we get the queue ... */ - while (atomic_compare_and_swap(QETH_OUT_Q_UNLOCKED, - QETH_OUT_Q_LOCKED, - &queue->state)); + while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, + QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); start_index = queue->next_buf_to_fill; buffer = &queue->bufs[queue->next_buf_to_fill]; /* -- cgit v1.2.3