Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma

Pull slave-dma updates from Vinod Koul:
 "Some notable changes are:
   - new driver for AMBA AXI NBPF by Guennadi
   - new driver for sun6i controller by Maxime
   - pl330 drivers fixes from Lar's
   - sh-dma updates and fixes from Laurent, Geert and Kuninori
   - Documentation updates from Geert
   - drivers fixes and updates spread over dw, edma, freescale, mpc512x
     etc.."

* 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (72 commits)
  dmaengine: sun6i: depends on RESET_CONTROLLER
  dma: at_hdmac: fix invalid remaining bytes detection
  dmaengine: nbpfaxi: don't build this driver where it cannot be used
  dmaengine: nbpf_error_get_channel() can be static
  dma: pl08x: Use correct specifier for size_t values
  dmaengine: Remove the context argument to the prep_dma_cyclic operation
  dmaengine: nbpfaxi: convert to tasklet
  dmaengine: nbpfaxi: fix a theoretical race
  dmaengine: add a driver for AMBA AXI NBPF DMAC IP cores
  dmaengine: add device tree binding documentation for the nbpfaxi driver
  dmaengine: edma: Do not register second device when booted with DT
  dmaengine: edma: Do not change the error code returned from edma_alloc_slot
  dmaengine: rcar-dmac: Add device tree bindings documentation
  dmaengine: shdma: Allocate cyclic sg list dynamically
  dmaengine: shdma: Make channel filter ignore unrelated devices
  dmaengine: sh: Rework Kconfig and Makefile
  dmaengine: sun6i: Fix memory leaks
  dmaengine: sun6i: Free the interrupt before killing the tasklet
  dmaengine: sun6i: Remove switch statement from buswidth convertion routine
  dmaengine: of: kconfig: select DMA_ENGINE when DMA_OF is selected
  ...

1 files changed, 9 insertions, 8 deletions

diff --git a/Documentation/dmaengine.txt b/Documentation/dmaengine.txt
index 879b6e31e2da..573e28ce9751 100644
--- a/Documentation/dmaengine.txt
+++ b/Documentation/dmaengine.txt
@@ -84,31 +84,32 @@ The slave DMA usage consists of following steps:
    the given transaction.
 
    Interface:
-	struct dma_async_tx_descriptor *(*chan->device->device_prep_slave_sg)(
+	struct dma_async_tx_descriptor *dmaengine_prep_slave_sg(
 		struct dma_chan *chan, struct scatterlist *sgl,
 		unsigned int sg_len, enum dma_data_direction direction,
 		unsigned long flags);
 
-	struct dma_async_tx_descriptor *(*chan->device->device_prep_dma_cyclic)(
+	struct dma_async_tx_descriptor *dmaengine_prep_dma_cyclic(
 		struct dma_chan *chan, dma_addr_t buf_addr, size_t buf_len,
 		size_t period_len, enum dma_data_direction direction);
 
-	struct dma_async_tx_descriptor *(*device_prep_interleaved_dma)(
+	struct dma_async_tx_descriptor *dmaengine_prep_interleaved_dma(
 		struct dma_chan *chan, struct dma_interleaved_template *xt,
 		unsigned long flags);
 
    The peripheral driver is expected to have mapped the scatterlist for
    the DMA operation prior to calling device_prep_slave_sg, and must
    keep the scatterlist mapped until the DMA operation has completed.
-   The scatterlist must be mapped using the DMA struct device.  So,
-   normal setup should look like this:
+   The scatterlist must be mapped using the DMA struct device.
+   If a mapping needs to be synchronized later, dma_sync_*_for_*() must be
+   called using the DMA struct device, too.
+   So, normal setup should look like this:
 
 	nr_sg = dma_map_sg(chan->device->dev, sgl, sg_len);
 	if (nr_sg == 0)
 		/* error */
 
-	desc = chan->device->device_prep_slave_sg(chan, sgl, nr_sg,
-			direction, flags);
+	desc = dmaengine_prep_slave_sg(chan, sgl, nr_sg, direction, flags);
 
    Once a descriptor has been obtained, the callback information can be
    added and the descriptor must then be submitted.  Some DMA engine
@@ -188,7 +189,7 @@ Further APIs:
    description of this API.
 
    This can be used in conjunction with dma_async_is_complete() and
-   the cookie returned from 'descriptor->submit()' to check for
+   the cookie returned from dmaengine_submit() to check for
    completion of a specific DMA transaction.
 
    Note: