From 3c81195a04e13833196462ab398d8bcf282701f7 Mon Sep 17 00:00:00 2001 From: Kang Chen Date: Mon, 27 Feb 2023 08:41:16 +0800 Subject: [PATCH] hwspinlock: add a check of devm_regmap_field_alloc in qcom_hwspinlock_probe devm_regmap_field_alloc may fails, priv field might be error pointer and cause illegal address access later. Signed-off-by: Kang Chen Link: https://lore.kernel.org/r/20230227004116.1273988-1-void0red@gmail.com Signed-off-by: Bjorn Andersson --- drivers/hwspinlock/qcom_hwspinlock.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/hwspinlock/qcom_hwspinlock.c b/drivers/hwspinlock/qcom_hwspinlock.c index 9cf1863..dee7bb5 100644 --- a/drivers/hwspinlock/qcom_hwspinlock.c +++ b/drivers/hwspinlock/qcom_hwspinlock.c @@ -197,6 +197,8 @@ static int qcom_hwspinlock_probe(struct platform_device *pdev) bank->lock[i].priv = devm_regmap_field_alloc(&pdev->dev, regmap, field); + if (IS_ERR(bank->lock[i].priv)) + return PTR_ERR(bank->lock[i].priv); } return devm_hwspin_lock_register(&pdev->dev, bank, &qcom_hwspinlock_ops, -- 2.7.4