From mboxrd@z Thu Jan 1 00:00:00 1970 From: viresh.kumar@st.com (Viresh Kumar) Date: Mon, 28 Feb 2011 16:11:19 +0530 Subject: [PATCH 4/8 resend] dw_dmac: calling dwc_scan_descriptors from dwc_tx_status() after taking lock In-Reply-To: References: Message-ID: <725d9e629bce9f79d87bdab4596a5088b70ea416.1298889267.git.viresh.kumar@st.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Signed-off-by: Viresh Kumar --- drivers/dma/dw_dmac.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c index 3bf4772..5cc5abf 100644 --- a/drivers/dma/dw_dmac.c +++ b/drivers/dma/dw_dmac.c @@ -830,7 +830,9 @@ dwc_tx_status(struct dma_chan *chan, ret = dma_async_is_complete(cookie, last_complete, last_used); if (ret != DMA_SUCCESS) { + spin_lock_bh(&dwc->lock); dwc_scan_descriptors(to_dw_dma(chan->device), dwc); + spin_unlock_bh(&dwc->lock); last_complete = dwc->completed; last_used = chan->cookie; -- 1.7.2.2