From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dan Williams Subject: [PATCH 14/19] dmaengine: add dma_sync_wait Date: Mon, 11 Sep 2006 16:18:49 -0700 Message-ID: <20060911231849.4737.90803.stgit@dwillia2-linux.ch.intel.com> References: <1158015632.4241.31.camel@dwillia2-linux.ch.intel.com> Content-Type: text/plain; charset=utf-8; format=fixed Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <1158015632.4241.31.camel@dwillia2-linux.ch.intel.com> Sender: linux-raid-owner@vger.kernel.org To: neilb@suse.de, linux-raid@vger.kernel.org Cc: akpm@osdl.org, linux-kernel@vger.kernel.org, christopher.leech@intel.com List-Id: linux-raid.ids From: Dan Williams dma_sync_wait is a common routine to live wait for a dma operation to complete. Signed-off-by: Dan Williams --- include/linux/dmaengine.h | 12 ++++++++++++ 1 files changed, 12 insertions(+), 0 deletions(-) diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 9fd6cbd..0a70c9e 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -750,6 +750,18 @@ static inline void dma_async_unmap_singl chan->device->unmap_single(chan, handle, size, direction); } +static inline enum dma_status dma_sync_wait(struct dma_chan *chan, + dma_cookie_t cookie) +{ + enum dma_status status; + dma_async_issue_pending(chan); + do { + status = dma_async_operation_complete(chan, cookie, NULL, NULL); + } while (status == DMA_IN_PROGRESS); + + return status; +} + /* --- DMA device --- */ int dma_async_device_register(struct dma_device *device);