On 8/26/2022 7:15 AM, Yang Yingliang wrote:
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;
LGTM.
Reviewed-by:Mukesh Ojha <quic_mojha@xxxxxxxxxxx>
-Mukesh
wcss->reg_base = devm_ioremap(&pdev->dev, res->start,
resource_size(res));
if (!wcss->reg_base)
