Messages in this thread Patch in this message | | | From | Viresh Kumar <> | Subject | [PATCH] dmaengine/dmatest: Terminate transfers on all channels in case of error or exit | Date | Fri, 29 Jul 2011 16:21:57 +0530 |
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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> --- 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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