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Date: Wed, 18 Mar 2009 12:20:31 -0700 From: Dan Williams <dan.j.williams@...el.com> To: linux-raid@...r.kernel.org, linux-kernel@...r.kernel.org Cc: neilb@...e.de, maciej.sosnowski@...el.com Subject: [PATCH 03/13] async_tx: provide __async_inline for HAS_DMA=n archs 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@...el.com> --- crypto/async_tx/async_xor.c | 7 ++----- include/linux/async_tx.h | 9 +++++++++ 2 files changed, 11 insertions(+), 5 deletions(-) diff --git a/crypto/async_tx/async_xor.c b/crypto/async_tx/async_xor.c index e1f1f28..11978a8 100644 --- a/crypto/async_tx/async_xor.c +++ b/crypto/async_tx/async_xor.c @@ -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, diff --git a/include/linux/async_tx.h b/include/linux/async_tx.h index 45f6297..5fc2ef8 100644 --- a/include/linux/async_tx.h +++ b/include/linux/async_tx.h @@ -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. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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