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async_tx: provide __async_inline for HAS_DMA=n archs

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To allow an async_tx routine to be compiled away on HAS_DMA=n arch it
needs to be declared __always_inline otherwise the compiler may emit
code and cause a link error.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2009-03-25 09:13:25 -07:00
parent 54aee6a5f5
commit 06164f3194
2 changed files with 11 additions and 5 deletions
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7
crypto/async_tx/async_xor.c
View File

@ -30,11 +30,8 @@
#include <linux/raid/xor.h>
#include <linux/async_tx.h>
/* do_async_xor - dma map the pages and perform the xor with an engine.
* This routine is marked __always_inline so it can be compiled away
* when CONFIG_DMA_ENGINE=n
*/
static __always_inline struct dma_async_tx_descriptor *
/* do_async_xor - dma map the pages and perform the xor with an engine */
static __async_inline struct dma_async_tx_descriptor *
do_async_xor(struct dma_chan *chan, struct page *dest, struct page **src_list,
unsigned int offset, int src_cnt, size_t len,
enum async_tx_flags flags,

9
include/linux/async_tx.h
View File

@ -21,6 +21,15 @@
#include <linux/spinlock.h>
#include <linux/interrupt.h>
/* on architectures without dma-mapping capabilities we need to ensure
* that the asynchronous path compiles away
*/
#ifdef CONFIG_HAS_DMA
#define __async_inline
#else
#define __async_inline __always_inline
#endif
/**
* dma_chan_ref - object used to manage dma channels received from the
* dmaengine core.