linux-kernel - [PATCH] soc: qcom: initialize local variable

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Message-Id: <20200819184637.15648-1-trix@redhat.com>
Date:   Wed, 19 Aug 2020 11:46:37 -0700
From:   trix@...hat.com
To:     agross@...nel.org, bjorn.andersson@...aro.org, sibis@...eaurora.org
Cc:     linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Tom Rix <trix@...hat.com>
Subject: [PATCH] soc: qcom: initialize local variable

From: Tom Rix <trix@...hat.com>

clang static analysis reports this problem

pdr_interface.c:596:6: warning: Branch condition evaluates
  to a garbage value
        if (!req.service_path[0])
            ^~~~~~~~~~~~~~~~~~~~

This check that req.service_path was set in an earlier loop.
However req is a stack variable and its initial value
is undefined.

So initialize req to 0.

Fixes: fbe639b44a82 ("soc: qcom: Introduce Protection Domain Restart helpers")

Signed-off-by: Tom Rix <trix@...hat.com>
---
 drivers/soc/qcom/pdr_interface.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/soc/qcom/pdr_interface.c b/drivers/soc/qcom/pdr_interface.c
index 088dc99f77f3..f63135c09667 100644
--- a/drivers/soc/qcom/pdr_interface.c
+++ b/drivers/soc/qcom/pdr_interface.c
@@ -569,7 +569,7 @@ EXPORT_SYMBOL(pdr_add_lookup);
 int pdr_restart_pd(struct pdr_handle *pdr, struct pdr_service *pds)
 {
 	struct servreg_restart_pd_resp resp;
-	struct servreg_restart_pd_req req;
+	struct servreg_restart_pd_req req = { 0 };
 	struct sockaddr_qrtr addr;
 	struct pdr_service *tmp;
 	struct qmi_txn txn;
-- 
2.18.1