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[78.11.189.27]) by smtp.gmail.com with ESMTPSA id be17-20020a056512251100b0049a4862966fsm1502286lfb.146.2022.09.23.08.57.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 23 Sep 2022 08:57:47 -0700 (PDT) From: Krzysztof Kozlowski To: Andy Gross , Bjorn Andersson , Konrad Dybcio , Srinivas Kandagatla , linux-arm-msm@vger.kernel.org, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/5] slimbus: stream: add checks for invalid unprepare/disable usage Date: Fri, 23 Sep 2022 17:57:36 +0200 Message-Id: <20220923155740.422411-1-krzysztof.kozlowski@linaro.org> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Cc: Krzysztof Kozlowski X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" slim_disable_stream() and slim_stream_unprepare() are exported, so add sanity checks preventing unmatched/invalid calls. Signed-off-by: Krzysztof Kozlowski --- drivers/slimbus/stream.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/slimbus/stream.c b/drivers/slimbus/stream.c index 75f87b3d8b95..7bb073ca6006 100644 --- a/drivers/slimbus/stream.c +++ b/drivers/slimbus/stream.c @@ -407,6 +407,9 @@ 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); @@ -438,6 +441,9 @@ 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]);