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

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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>
This commit is contained in:
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);
}