[PATCH] phy: qualcomm: Check NULL ptr on data

[PATCH] phy: qualcomm: Check NULL ptr on data

[Ma Ke]

Check NULL ptr on data, verify that data is not NULL before using it.

Cc: stable@vger.kernel.org
Fixes: ef19b117b834 ("phy: qualcomm: add qcom ipq806x dwc usb phy driver")
Signed-off-by: Ma Ke <make24@iscas.ac.cn>
---
 drivers/phy/qualcomm/phy-qcom-ipq806x-usb.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/phy/qualcomm/phy-qcom-ipq806x-usb.c b/drivers/phy/qualcomm/phy-qcom-ipq806x-usb.c
index 06392ed7c91b..9b9fd9c1b1f7 100644
--- a/drivers/phy/qualcomm/phy-qcom-ipq806x-usb.c
+++ b/drivers/phy/qualcomm/phy-qcom-ipq806x-usb.c
@@ -492,6 +492,8 @@ static int qcom_ipq806x_usb_phy_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	data = of_device_get_match_data(&pdev->dev);
+	if (!data)
+		return -ENODEV;
 
 	phy_dwc3->dev = &pdev->dev;
 
-- 
2.25.1


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Re: [PATCH] phy: qualcomm: Check NULL ptr on data

[Greg KH]

On Wed, Aug 14, 2024 at 10:11:25PM +0800, Ma Ke wrote:
> Check NULL ptr on data, verify that data is not NULL before using it.
> 
> Cc: stable@vger.kernel.org
> Fixes: ef19b117b834 ("phy: qualcomm: add qcom ipq806x dwc usb phy driver")
> Signed-off-by: Ma Ke <make24@iscas.ac.cn>
> ---
>  drivers/phy/qualcomm/phy-qcom-ipq806x-usb.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/phy/qualcomm/phy-qcom-ipq806x-usb.c b/drivers/phy/qualcomm/phy-qcom-ipq806x-usb.c
> index 06392ed7c91b..9b9fd9c1b1f7 100644
> --- a/drivers/phy/qualcomm/phy-qcom-ipq806x-usb.c
> +++ b/drivers/phy/qualcomm/phy-qcom-ipq806x-usb.c
> @@ -492,6 +492,8 @@ static int qcom_ipq806x_usb_phy_probe(struct platform_device *pdev)
>  		return -ENOMEM;
>  
>  	data = of_device_get_match_data(&pdev->dev);
> +	if (!data)
> +		return -ENODEV;

When will this ever fail?

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