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authorViresh Kumar <viresh.kumar@st.com>2011-07-29 16:21:57 +0530
committerVinod Koul <vinod.koul@intel.com>2011-08-08 19:32:01 +0530
commit9704efaa52ab18eb3504c4e0bc421c1d01b7981a (patch)
treea6bc4e37cef1bd805e45a40804dd11ef9493a4c3 /drivers/dma/dmatest.c
parent90b44f8ffdf6c66d190ee71b330009bf7f11a208 (diff)
downloadop-kernel-dev-9704efaa52ab18eb3504c4e0bc421c1d01b7981a.zip
op-kernel-dev-9704efaa52ab18eb3504c4e0bc421c1d01b7981a.tar.gz
dmaengine/dmatest: Terminate transfers on all channels in case of error or exit
In case, some error occurs while doing memcpy transfers, we must terminate all transfers physically too. This is achieved by calling device_control() routine with TERMINATE_ALL as parameter. This is also required to be done in case module is removed while we are in middle of some transfers. Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/dmatest.c')
-rw-r--r--drivers/dma/dmatest.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index 765f5ff..accc184 100644
--- a/drivers/dma/dmatest.c
+++ b/drivers/dma/dmatest.c
@@ -477,6 +477,8 @@ err_srcs:
pr_notice("%s: terminating after %u tests, %u failures (status %d)\n",
thread_name, total_tests, failed_tests, ret);
+ /* terminate all transfers on specified channels */
+ chan->device->device_control(chan, DMA_TERMINATE_ALL, 0);
if (iterations > 0)
while (!kthread_should_stop()) {
DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wait_dmatest_exit);
@@ -499,6 +501,10 @@ static void dmatest_cleanup_channel(struct dmatest_chan *dtc)
list_del(&thread->node);
kfree(thread);
}
+
+ /* terminate all transfers on specified channels */
+ dtc->chan->device->device_control(dtc->chan, DMA_TERMINATE_ALL, 0);
+
kfree(dtc);
}
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