From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nicolin Chen Subject: [PATCH v2 1/2] dmaengine: tegra210-adma: Add pre-check for cyclic callback Date: Fri, 2 Sep 2016 17:32:48 -0700 Message-ID: <75bbbd9f20e0ead30760f47f0fd2ee9b05d49254.1472857934.git.nicoleotsuka@gmail.com> References: Return-path: In-Reply-To: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org To: vinod.koul@intel.com, jonathanh@nvidia.com Cc: linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, dmaengine@vger.kernel.org, gnurou@gmail.com, thierry.reding@gmail.com, swarren@wwwdotorg.org, ldewangan@nvidia.com List-Id: linux-tegra@vger.kernel.org ADMA driver will support more than cyclic type of transaction. So this patch limits the cyclic callback for the cyclic type only in order to support other types. Signed-off-by: Nicolin Chen --- drivers/dma/tegra210-adma.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/dma/tegra210-adma.c b/drivers/dma/tegra210-adma.c index 09b46f7..5b5d298 100644 --- a/drivers/dma/tegra210-adma.c +++ b/drivers/dma/tegra210-adma.c @@ -111,6 +111,7 @@ struct tegra_adma_desc { size_t buf_len; size_t period_len; size_t num_periods; + bool cyclic; }; /* @@ -408,7 +409,8 @@ static irqreturn_t tegra_adma_isr(int irq, void *dev_id) return IRQ_NONE; } - vchan_cyclic_callback(&tdc->desc->vd); + if (tdc->desc->cyclic) + vchan_cyclic_callback(&tdc->desc->vd); spin_unlock_irqrestore(&tdc->vc.lock, flags); @@ -557,6 +559,7 @@ static struct dma_async_tx_descriptor *tegra_adma_prep_dma_cyclic( if (!desc) return NULL; + desc->cyclic = true; desc->buf_len = buf_len; desc->period_len = period_len; desc->num_periods = buf_len / period_len; -- 2.1.4