Re: [RFC PATCH v9 6/9] media: tegra: Add Tegra210 Video input driver

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On 4/23/20 4:16 PM, Dmitry Osipenko wrote:
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22.04.2020 09:18, Sowjanya Komatineni пишет:
+static int chan_capture_kthread_start(void *data)
+{
+     struct tegra_vi_channel *chan = data;
+     struct tegra_channel_buffer *buf;
+     int err = 0;
+
+     set_freezable();
+
+     while (1) {
+             try_to_freeze();
+
+             wait_event_interruptible(chan->start_wait,
+                                      !list_empty(&chan->capture) ||
+                                      kthread_should_stop());
+
+             if (kthread_should_stop())
+                     break;
+
+             /*
+              * Source is not streaming if error is non-zero.
+              * So, do not dequeue buffers on capture error.
+              */
+             if (err)
+                     continue;
This will result in an endless loop, I suppose it wasn't the intention.

no it will not. on error we report vb2_queue_error which will do streaming stop request.

So thread will be stopped on streaming stop request thru kthread stop signal





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