diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/infiniband/core/uverbs.h | 1 | ||||
| -rw-r--r-- | drivers/infiniband/core/uverbs_main.c | 14 | ||||
| -rw-r--r-- | drivers/infiniband/hw/mthca/mthca_cq.c | 6 | ||||
| -rw-r--r-- | drivers/infiniband/hw/mthca/mthca_provider.c | 6 | ||||
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_ib.c | 6 |
5 files changed, 25 insertions, 8 deletions
diff --git a/drivers/infiniband/core/uverbs.h b/drivers/infiniband/core/uverbs.h index 57347f1e82c1..7696022f9a4e 100644 --- a/drivers/infiniband/core/uverbs.h +++ b/drivers/infiniband/core/uverbs.h @@ -61,6 +61,7 @@ struct ib_uverbs_event_file { int fd; int is_async; wait_queue_head_t poll_wait; + struct fasync_struct *async_queue; struct list_head event_list; }; diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c index fbbe03d8c901..eb99e693dec2 100644 --- a/drivers/infiniband/core/uverbs_main.c +++ b/drivers/infiniband/core/uverbs_main.c @@ -257,11 +257,19 @@ static void ib_uverbs_event_release(struct ib_uverbs_event_file *file) spin_unlock_irq(&file->lock); } +static int ib_uverbs_event_fasync(int fd, struct file *filp, int on) +{ + struct ib_uverbs_event_file *file = filp->private_data; + + return fasync_helper(fd, filp, on, &file->async_queue); +} + static int ib_uverbs_event_close(struct inode *inode, struct file *filp) { struct ib_uverbs_event_file *file = filp->private_data; ib_uverbs_event_release(file); + ib_uverbs_event_fasync(-1, filp, 0); kref_put(&file->uverbs_file->ref, ib_uverbs_release_file); return 0; @@ -276,7 +284,8 @@ static struct file_operations uverbs_event_fops = { */ .read = ib_uverbs_event_read, .poll = ib_uverbs_event_poll, - .release = ib_uverbs_event_close + .release = ib_uverbs_event_close, + .fasync = ib_uverbs_event_fasync }; void ib_uverbs_comp_handler(struct ib_cq *cq, void *cq_context) @@ -296,6 +305,7 @@ void ib_uverbs_comp_handler(struct ib_cq *cq, void *cq_context) spin_unlock_irqrestore(&file->comp_file[0].lock, flags); wake_up_interruptible(&file->comp_file[0].poll_wait); + kill_fasync(&file->comp_file[0].async_queue, SIGIO, POLL_IN); } static void ib_uverbs_async_handler(struct ib_uverbs_file *file, @@ -316,6 +326,7 @@ static void ib_uverbs_async_handler(struct ib_uverbs_file *file, spin_unlock_irqrestore(&file->async_file.lock, flags); wake_up_interruptible(&file->async_file.poll_wait); + kill_fasync(&file->async_file.async_queue, SIGIO, POLL_IN); } void ib_uverbs_cq_event_handler(struct ib_event *event, void *context_ptr) @@ -350,6 +361,7 @@ static int ib_uverbs_event_init(struct ib_uverbs_event_file *file, INIT_LIST_HEAD(&file->event_list); init_waitqueue_head(&file->poll_wait); file->uverbs_file = uverbs_file; + file->async_queue = NULL; file->fd = get_unused_fd(); if (file->fd < 0) diff --git a/drivers/infiniband/hw/mthca/mthca_cq.c b/drivers/infiniband/hw/mthca/mthca_cq.c index b5aea7b869f6..5687c3014522 100644 --- a/drivers/infiniband/hw/mthca/mthca_cq.c +++ b/drivers/infiniband/hw/mthca/mthca_cq.c @@ -373,8 +373,12 @@ static int handle_error_cqe(struct mthca_dev *dev, struct mthca_cq *cq, * If we're at the end of the WQE chain, or we've used up our * doorbell count, free the CQE. Otherwise just update it for * the next poll operation. + * + * This does not apply to mem-free HCAs: they don't use the + * doorbell count field, and so we should always free the CQE. */ - if (!(new_wqe & cpu_to_be32(0x3f)) || (!cqe->db_cnt && dbd)) + if (mthca_is_memfree(dev) || + !(new_wqe & cpu_to_be32(0x3f)) || (!cqe->db_cnt && dbd)) return 0; cqe->db_cnt = cpu_to_be16(be16_to_cpu(cqe->db_cnt) - dbd); diff --git a/drivers/infiniband/hw/mthca/mthca_provider.c b/drivers/infiniband/hw/mthca/mthca_provider.c index 7a58ce90e179..81919a7b4935 100644 --- a/drivers/infiniband/hw/mthca/mthca_provider.c +++ b/drivers/infiniband/hw/mthca/mthca_provider.c @@ -349,9 +349,9 @@ static int mthca_mmap_uar(struct ib_ucontext *context, vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); - if (remap_pfn_range(vma, vma->vm_start, - to_mucontext(context)->uar.pfn, - PAGE_SIZE, vma->vm_page_prot)) + if (io_remap_pfn_range(vma, vma->vm_start, + to_mucontext(context)->uar.pfn, + PAGE_SIZE, vma->vm_page_prot)) return -EAGAIN; return 0; diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ib.c b/drivers/infiniband/ulp/ipoib/ipoib_ib.c index 8238766746b2..eee82363167d 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_ib.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_ib.c @@ -81,7 +81,7 @@ void ipoib_free_ah(struct kref *kref) unsigned long flags; - if (ah->last_send <= priv->tx_tail) { + if ((int) priv->tx_tail - (int) ah->last_send >= 0) { ipoib_dbg(priv, "Freeing ah %p\n", ah->ah); ib_destroy_ah(ah->ah); kfree(ah); @@ -355,7 +355,7 @@ static void __ipoib_reap_ah(struct net_device *dev) spin_lock_irq(&priv->lock); list_for_each_entry_safe(ah, tah, &priv->dead_ahs, list) - if (ah->last_send <= priv->tx_tail) { + if ((int) priv->tx_tail - (int) ah->last_send >= 0) { list_del(&ah->list); list_add_tail(&ah->list, &remove_list); } @@ -486,7 +486,7 @@ int ipoib_ib_dev_stop(struct net_device *dev) * assume the HW is wedged and just free up * all our pending work requests. */ - while (priv->tx_tail < priv->tx_head) { + while ((int) priv->tx_tail - (int) priv->tx_head < 0) { tx_req = &priv->tx_ring[priv->tx_tail & (IPOIB_TX_RING_SIZE - 1)]; dma_unmap_single(priv->ca->dma_device, |