If platform_get_resource_byname() fails, 'res' will be set to null pointer, it will cause null-ptr-deref when it used in devm_ioremap(), so we need check the return value. Fixes: 0af65b9b915e ("remoteproc: qcom: wcss: Add non pas wcss Q6 support for QCS404") Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx> --- drivers/remoteproc/qcom_q6v5_wcss.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/remoteproc/qcom_q6v5_wcss.c b/drivers/remoteproc/qcom_q6v5_wcss.c index bb0947f7770e..017ee225dc32 100644 --- a/drivers/remoteproc/qcom_q6v5_wcss.c +++ b/drivers/remoteproc/qcom_q6v5_wcss.c @@ -827,6 +827,8 @@ static int q6v5_wcss_init_mmio(struct q6v5_wcss *wcss, int ret; res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "qdsp6"); + if (!res) + return -EINVAL; wcss->reg_base = devm_ioremap(&pdev->dev, res->start, resource_size(res)); if (!wcss->reg_base) -- 2.25.1