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| author | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2009-03-27 16:14:38 +0100 |
|---|---|---|
| committer | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2009-03-27 16:14:38 +0100 |
| commit | b92efa9abffc4a634cd2e7a0f81f8aa6310d67c9 (patch) | |
| tree | 9847508d9b8d4e585f90db4a453bfbc3700c997e /drivers/dma/dmaengine.c | |
| parent | a16fffdd8eb95ebab7dc22414896fe6493951e0e (diff) | |
| parent | be0ea69674ed95e1e98cb3687a241badc756d228 (diff) | |
| download | kernel-crypto-b92efa9abffc4a634cd2e7a0f81f8aa6310d67c9.tar.gz kernel-crypto-b92efa9abffc4a634cd2e7a0f81f8aa6310d67c9.tar.xz kernel-crypto-b92efa9abffc4a634cd2e7a0f81f8aa6310d67c9.zip | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into avr32-arch
Diffstat (limited to 'drivers/dma/dmaengine.c')
| -rw-r--r-- | drivers/dma/dmaengine.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c index 403dbe78112..280a9d263eb 100644 --- a/drivers/dma/dmaengine.c +++ b/drivers/dma/dmaengine.c @@ -329,9 +329,6 @@ struct dma_chan *dma_find_channel(enum dma_transaction_type tx_type) struct dma_chan *chan; int cpu; - WARN_ONCE(dmaengine_ref_count == 0, - "client called %s without a reference", __func__); - cpu = get_cpu(); chan = per_cpu_ptr(channel_table[tx_type], cpu)->chan; put_cpu(); @@ -348,9 +345,6 @@ void dma_issue_pending_all(void) struct dma_device *device; struct dma_chan *chan; - WARN_ONCE(dmaengine_ref_count == 0, - "client called %s without a reference", __func__); - rcu_read_lock(); list_for_each_entry_rcu(device, &dma_device_list, global_node) { if (dma_has_cap(DMA_PRIVATE, device->cap_mask)) @@ -524,6 +518,7 @@ struct dma_chan *__dma_request_channel(dma_cap_mask_t *mask, dma_filter_fn fn, v dma_chan_name(chan), err); else break; + chan->private = NULL; chan = NULL; } } @@ -542,6 +537,7 @@ void dma_release_channel(struct dma_chan *chan) WARN_ONCE(chan->client_count != 1, "chan reference count %d != 1\n", chan->client_count); dma_chan_put(chan); + chan->private = NULL; mutex_unlock(&dma_list_mutex); } EXPORT_SYMBOL_GPL(dma_release_channel); @@ -961,6 +957,8 @@ void dma_run_dependencies(struct dma_async_tx_descriptor *tx) if (!dep) return; + /* we'll submit tx->next now, so clear the link */ + tx->next = NULL; chan = dep->chan; /* keep submitting up until a channel switch is detected |