dmaengine: remove 'bigref' infrastructure

Reference counting is done at the module level so clients need not worry
that a channel will leave while they are actively using dmaengine.

Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

1 files changed, 0 insertions, 7 deletions

diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index db050e97d2b4..bca2fc758894 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -142,10 +142,6 @@ struct dma_chan {
         int chan_id;
         struct device dev;
 
-        struct kref refcount;
-        int slow_ref;
-        struct rcu_head rcu;
-
         struct list_head device_node;
         struct dma_chan_percpu *local;
         int client_count;
@@ -233,9 +229,6 @@ struct dma_device {
         dma_cap_mask_t  cap_mask;
         int max_xor;
 
-        struct kref refcount;
-        struct completion done;
-
         int dev_id;
         struct device *dev;