linux-kernel - [PATCH -next] firmware: arm_scmi: optee: Fix missing mutex

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Date:   Tue, 23 Nov 2021 08:36:20 +0000
From:   Wei Yongjun <weiyongjun1@...wei.com>
To:     <weiyongjun1@...wei.com>,
        Etienne Carriere <etienne.carriere@...aro.org>,
        Sudeep Holla <sudeep.holla@....com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <kernel-janitors@...r.kernel.org>,
        Hulk Robot <hulkci@...wei.com>
Subject: [PATCH -next] firmware: arm_scmi: optee: Fix missing mutex_init()

The driver allocates the mutex but not initialize it.
Use mutex_init() on it to initialize it correctly.

Fixes: 5f90f189a052 ("firmware: arm_scmi: Add optee transport")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@...wei.com>
---
 drivers/firmware/arm_scmi/optee.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/firmware/arm_scmi/optee.c b/drivers/firmware/arm_scmi/optee.c
index d9819b0197ec..901737c9f5f8 100644
--- a/drivers/firmware/arm_scmi/optee.c
+++ b/drivers/firmware/arm_scmi/optee.c
@@ -506,6 +506,7 @@ static int scmi_optee_service_probe(struct device *dev)
 	agent->dev = dev;
 	agent->tee_ctx = tee_ctx;
 	INIT_LIST_HEAD(&agent->channel_list);
+	mutex_init(&agent->mu);
 
 	ret = get_capabilities(agent);
 	if (ret)