From 6d4080d2bb4c2cfada3881c6d89ecb2d72b60a39 Mon Sep 17 00:00:00 2001
From: Prateek Patel <prpatel@nvidia.com>
Date: Tue, 10 May 2022 04:40:15 +0000
Subject: [PATCH] drivers: cec: fix cert_c defect

Add a sanity check on cec->soc, which could be NULL.

CID 490328

Bug 3512545

Change-Id: Ibd334c5637a85342ed5307eecb697416f32e0360
Signed-off-by: Prateek Patel <prpatel@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2710156
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: svc_kernel_abi <svc_kernel_abi@nvidia.com>
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
GVS: Gerrit_Virtual_Submit
---
 drivers/misc/tegra-cec/tegra_cec.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/misc/tegra-cec/tegra_cec.c b/drivers/misc/tegra-cec/tegra_cec.c
index 3f570448..bc027a8a 100644
--- a/drivers/misc/tegra-cec/tegra_cec.c
+++ b/drivers/misc/tegra-cec/tegra_cec.c
@@ -747,6 +747,12 @@ static int tegra_cec_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	cec->soc = of_device_get_match_data(&pdev->dev);
+	if (cec->soc == NULL) {
+		dev_err(&pdev->dev, "No cec dev table found\n");
+		devm_kfree(&pdev->dev, cec);
+		return -ENODEV;
+	}
+
 	if (cec->soc->cec_always_on && reset_retry_count != 0) {
 		rst = devm_reset_control_get(&pdev->dev, "cec");
 		if (IS_ERR(rst)) {