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v4l2: improve debug
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@ -1743,6 +1743,8 @@ static int vidioc_reqbufs(struct file *file, struct v4l2_requestbuffers *arg)
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pw_log_info("result count: %u", arg->count);
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exit_unlock:
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if (res < 0)
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pw_log_info("error : %s", spa_strerror(res));
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pw_thread_loop_unlock(file->loop);
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return res;
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}
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