From mboxrd@z Thu Jan 1 00:00:00 1970 From: viresh.kumar@st.com (Viresh Kumar) Date: Mon, 28 Feb 2011 16:11:18 +0530 Subject: [PATCH 3/8 resend] dw_dmac: call dwc_scan_descriptor from dwc_issue_pending only if active list is empty In-Reply-To: References: Message-ID: <8003205172278ef36cfca1fd50a54cb143fad958.1298889267.git.viresh.kumar@st.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org dwc_scan_descriptor was called even when there were descriptors in active list. Checking if active list is empty or not. Signed-off-by: Viresh Kumar --- drivers/dma/dw_dmac.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c index 6dd03b0..3bf4772 100644 --- a/drivers/dma/dw_dmac.c +++ b/drivers/dma/dw_dmac.c @@ -848,7 +848,7 @@ static void dwc_issue_pending(struct dma_chan *chan) struct dw_dma_chan *dwc = to_dw_dma_chan(chan); spin_lock_bh(&dwc->lock); - if (!list_empty(&dwc->queue)) + if (!list_empty(&dwc->queue) && list_empty(&dwc->active_list)) dwc_scan_descriptors(to_dw_dma(chan->device), dwc); spin_unlock_bh(&dwc->lock); } -- 1.7.2.2