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slimbus: stream: add checks for invalid unprepare/disable usage
slim_disable_stream() and slim_stream_unprepare() are exported, so add sanity checks preventing unmatched/invalid calls. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20221118065246.6835-6-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -414,6 +414,9 @@ int slim_stream_disable(struct slim_stream_runtime *stream)
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struct slim_controller *ctrl = stream->dev->ctrl;
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int ret, i;
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if (!stream->ports || !stream->num_ports)
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return -EINVAL;
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if (ctrl->disable_stream)
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ctrl->disable_stream(stream);
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@ -445,6 +448,9 @@ int slim_stream_unprepare(struct slim_stream_runtime *stream)
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{
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int i;
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if (!stream->ports || !stream->num_ports)
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return -EINVAL;
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for (i = 0; i < stream->num_ports; i++)
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slim_disconnect_port(stream, &stream->ports[i]);
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