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	port: don't try to negotiate 0 buffers
Don't try to negotiate buffers when we are clearing the buffers.
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					 1 changed files with 12 additions and 10 deletions
				
			
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					@ -1208,17 +1208,19 @@ static int negotiate_mixer_buffers(struct pw_impl_port *port, uint32_t flags,
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		pw_buffers_clear(&port->mix_buffers);
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							pw_buffers_clear(&port->mix_buffers);
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		if ((res = pw_buffers_negotiate(node->context, alloc_flags,
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							if (n_buffers > 0) {
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				port->mix, 0,
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								if ((res = pw_buffers_negotiate(node->context, alloc_flags,
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				node->node, port->port_id,
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										port->mix, 0,
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				&port->mix_buffers)) < 0) {
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										node->node, port->port_id,
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			pw_log_warn(NAME" %p: can't negotiate buffers: %s",
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										&port->mix_buffers)) < 0) {
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					port, spa_strerror(res));
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									pw_log_warn(NAME" %p: can't negotiate buffers: %s",
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			return res;
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											port, spa_strerror(res));
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									return res;
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								}
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								buffers = port->mix_buffers.buffers;
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								n_buffers = port->mix_buffers.n_buffers;
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								flags = 0;
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		}
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							}
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		buffers = port->mix_buffers.buffers;
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		n_buffers = port->mix_buffers.n_buffers;
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		flags = 0;
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	}
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						}
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	pw_log_debug(NAME" %p: %d.%d use buffers on node: %p",
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						pw_log_debug(NAME" %p: %d.%d use buffers on node: %p",
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