Commit a82b1ec3 authored by Krzysztof Kozlowski's avatar Krzysztof Kozlowski Committed by Greg Kroah-Hartman
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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: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: default avatarSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20221118065246.6835-6-srinivas.kandagatla@linaro.org


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 4594cb4b

drivers/slimbus/stream.c

+6 −0
Original line number Diff line number Diff line
@@ -414,6 +414,9 @@ int slim_stream_disable(struct slim_stream_runtime *stream) 
	struct slim_controller *ctrl = stream->dev->ctrl;

	int ret, i;



	if (!stream->ports || !stream->num_ports)

		return -EINVAL;



	if (ctrl->disable_stream)

		ctrl->disable_stream(stream);
@@ -445,6 +448,9 @@ int slim_stream_unprepare(struct slim_stream_runtime *stream) 
{

	int i;



	if (!stream->ports || !stream->num_ports)

		return -EINVAL;



	for (i = 0; i < stream->num_ports; i++)

		slim_disconnect_port(stream, &stream->ports[i]);