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Message-ID: <d6e4dd0907905e3c951a3fe3d0e6f446152ea3ac.1303796005.git.viresh.kumar@st.com>
Date: Tue, 26 Apr 2011 11:08:11 +0530
From: Viresh Kumar <viresh.kumar@...com>
To: <vinod.koul@...el.com>, <dan.j.williams@...el.com>
Cc: <linux-kernel@...r.kernel.org>, <armando.visconti@...com>,
<shiraz.hashim@...com>, Viresh Kumar <viresh.kumar@...com>
Subject: [PATCH V2 resend 3/7] dmaengine/dw_dmac: call dwc_descriptor_complete from dwc_control with lock held
dwc_descriptor_complete must always be called with channel lock held. This patch
moves unlock code, in dwc_control(), untill after dwc_descriptor_complete is
called.
Signed-off-by: Viresh Kumar <viresh.kumar@...com>
---
drivers/dma/dw_dmac.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
index dbe8203..bbb658c 100644
--- a/drivers/dma/dw_dmac.c
+++ b/drivers/dma/dw_dmac.c
@@ -825,12 +825,12 @@ static int dwc_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
list_splice_init(&dwc->queue, &list);
list_splice_init(&dwc->active_list, &list);
- spin_unlock_irqrestore(&dwc->lock, dwc->lflags);
-
/* Flush all pending and queued descriptors */
list_for_each_entry_safe(desc, _desc, &list, desc_node)
dwc_descriptor_complete(dwc, desc);
+ spin_unlock_irqrestore(&dwc->lock, dwc->lflags);
+
return 0;
}
--
1.7.2.2
--
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