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>

diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index 765f5ff22304348aa629b5857a02397f93dea8ce..accc18441b1670f8c866b11b8c9250a2683e280e 100644 (file)
--- 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);
 }