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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>
hifive-unleashed-5.1
Viresh Kumar 2011-07-29 16:21:57 +05:30 committed by Vinod Koul
parent 90b44f8ffd
commit 9704efaa52
1 changed files with 6 additions and 0 deletions
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6
drivers/dma/dmatest.c
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@ -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);
}