mirror of
https://git.yoctoproject.org/meta-ti
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Koen Kooi
56 lines
2.0 KiB
Diff
56 lines
2.0 KiB
Diff
From 8948bfb494b67389d7ea6249b3d6e765f4500d88 Mon Sep 17 00:00:00 2001
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From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
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Date: Wed, 22 Dec 2010 14:46:46 +0100
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Subject: [PATCH 49/65] dmaengine: provide dummy functions for DMA_ENGINE=n
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This lets drivers, optionally using the dmaengine, build with DMA_ENGINE
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unselected.
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Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
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Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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---
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include/linux/dmaengine.h | 13 ++++++++++---
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1 files changed, 10 insertions(+), 3 deletions(-)
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diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
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index 9d8688b..8cd00ad 100644
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--- a/include/linux/dmaengine.h
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+++ b/include/linux/dmaengine.h
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@@ -824,6 +824,8 @@ enum dma_status dma_sync_wait(struct dma_chan *chan, dma_cookie_t cookie);
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#ifdef CONFIG_DMA_ENGINE
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enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx);
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void dma_issue_pending_all(void);
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+struct dma_chan *__dma_request_channel(dma_cap_mask_t *mask, dma_filter_fn fn, void *fn_param);
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+void dma_release_channel(struct dma_chan *chan);
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#else
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static inline enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx)
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{
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@@ -831,7 +833,14 @@ static inline enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descript
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}
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static inline void dma_issue_pending_all(void)
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{
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- do { } while (0);
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+}
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+static inline struct dma_chan *__dma_request_channel(dma_cap_mask_t *mask,
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+ dma_filter_fn fn, void *fn_param)
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+{
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+ return NULL;
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+}
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+static inline void dma_release_channel(struct dma_chan *chan)
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+{
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}
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#endif
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@@ -842,8 +851,6 @@ void dma_async_device_unregister(struct dma_device *device);
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void dma_run_dependencies(struct dma_async_tx_descriptor *tx);
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struct dma_chan *dma_find_channel(enum dma_transaction_type tx_type);
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#define dma_request_channel(mask, x, y) __dma_request_channel(&(mask), x, y)
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-struct dma_chan *__dma_request_channel(dma_cap_mask_t *mask, dma_filter_fn fn, void *fn_param);
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-void dma_release_channel(struct dma_chan *chan);
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/* --- Helper iov-locking functions --- */
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--
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1.6.6.1
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