lkml.org 
[lkml]   [2011]   [Feb]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4/8 resend] dw_dmac: calling dwc_scan_descriptors from dwc_tx_status() after taking lock
Date
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
---
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


\
 
 \ /
  Last update: 2011-02-28 11:45    [W:0.147 / U:0.164 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site