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authorKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>2022-11-18 06:52:39 +0000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2022-11-23 19:45:33 +0100
commita82b1ec34e9bea94058f429560e311e5ca634356 (patch)
treedb57323536e65850bc3413f0d2f0edee8b42acd7 /drivers/slimbus
parent4594cb4b76c6cf9acf81d3044c6a6817ed4a3781 (diff)
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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>
Diffstat (limited to 'drivers/slimbus')
-rw-r--r--drivers/slimbus/stream.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/slimbus/stream.c b/drivers/slimbus/stream.c
index 7e9c818e66c1..1d6b38657917 100644
--- a/drivers/slimbus/stream.c
+++ b/drivers/slimbus/stream.c
@@ -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]);