From: Viresh Kumar <viresh.kumar@st.com>
To: <dan.j.williams@intel.com>, <linux-kernel@vger.kernel.org>
Cc: <shiraz.hashim@st.com>, <amit.goel@st.com>,
<armando.visconti@st.com>, Viresh Kumar <viresh.kumar@st.com>
Subject: [PATCH 4/7] dw_dmac: calling dwc_scan_descriptors from dwc_tx_status() after taking lock
Date: Thu, 17 Feb 2011 12:54:54 +0530 [thread overview]
Message-ID: <2221975299c2fa187f86be691a5a5c27a4cbdf90.1297926678.git.viresh.kumar@st.com> (raw)
In-Reply-To: <d41145ce4d5e3d870f720709f68d5b1dbf34d6a0.1297926678.git.viresh.kumar@st.com>
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
next prev parent reply other threads:[~2011-02-17 7:25 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-17 7:24 [PATCH 1/7] dw_dmac: Remove compilation dependency from AVR32 Viresh Kumar
2011-02-17 7:24 ` [PATCH 2/7] dw_dmac: Move single descriptor from dwc->queue to dwc->active_list in dwc_complete_all Viresh Kumar
2011-02-17 7:24 ` [PATCH 3/7] dw_dmac: call dwc_scan_descriptor from dwc_issue_pending only if active list is empty Viresh Kumar
2011-02-17 7:24 ` Viresh Kumar [this message]
2011-02-17 7:24 ` [PATCH 5/7] dw_dmac: adding support for 64 bit access width for memcpy xfers Viresh Kumar
2011-02-17 7:24 ` [PATCH 6/7] dw_dmac: Mark all tx_descriptors with DMA_CRTL_ACK after xfer finish Viresh Kumar
2011-02-17 7:24 ` [PATCH 7/7] dw_dmac.c: Pass Channel Allocation Priority from platform_data Viresh Kumar
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