Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm

[cascardo/linux.git] / drivers / dma / dmaengine.c

diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index 403dbe7..a589930 100644 (file)
--- 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))
@@ -961,6 +955,8 @@ 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