[PATCH] dmaengine/dmatest: Terminate transfers on all channels in case of error or exit

[Viresh Kumar]

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@xxxxxx>
---
 drivers/dma/dmatest.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index b4f5c32..cd8ae03 100644
--- a/drivers/dma/dmatest.c
+++ b/drivers/dma/dmatest.c
@@ -476,6 +476,8 @@ 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);
@@ -498,6 +500,10 @@ 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);
 }
 
-- 
1.7.2.2

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