linux-kernel - [PATCH] phy: qcom-qmp: initialize the pointer to NULL

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Date:   Thu,  1 Oct 2020 12:39:11 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Kishon Vijay Abraham I <kishon@...com>
Cc:     linux-kernel@...r.kernel.org, Vinod Koul <vkoul@...nel.org>,
        Stephen Boyd <swboyd@...omium.org>,
        linux-arm-msm@...r.kernel.org, kernel test robot <lkp@...el.com>,
        Dan Carpenter <dan.carpenter@...cle.com>
Subject: [PATCH] phy: qcom-qmp: initialize the pointer to NULL

Smatch complains:
drivers/phy/qualcomm/phy-qcom-qmp.c:3899 qcom_qmp_phy_probe() error: uninitialized symbol 'dp_cfg'.
drivers/phy/qualcomm/phy-qcom-qmp.c:3900 qcom_qmp_phy_probe() error: uninitialized symbol 'dp_serdes'.
drivers/phy/qualcomm/phy-qcom-qmp.c:3902 qcom_qmp_phy_probe() error: uninitialized symbol 'usb_cfg'.

This is a warning but not a practical one as dp_cfg, dp_serdes and
usb_cfg will be set and used when valid. So we can set the pointers to
NULL to quiesce the warnings.

Reported-by: kernel test robot <lkp@...el.com>
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
Fixes: 52e013d0bffa ("phy: qcom-qmp: Add support for DP in USB3+DP combo phy")
Signed-off-by: Vinod Koul <vkoul@...nel.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c
index 6171b44da050..5d33ad4d06f2 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp.c
@@ -3928,9 +3928,9 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev)
 	void __iomem *usb_serdes;
 	void __iomem *dp_serdes;
 	const struct qmp_phy_combo_cfg *combo_cfg = NULL;
-	const struct qmp_phy_cfg *cfg;
-	const struct qmp_phy_cfg *usb_cfg;
-	const struct qmp_phy_cfg *dp_cfg;
+	const struct qmp_phy_cfg *cfg = NULL;
+	const struct qmp_phy_cfg *usb_cfg = NULL;
+	const struct qmp_phy_cfg *dp_cfg = NULL;
 	int num, id, expected_phys;
 	int ret;
 
-- 
2.26.2