Re: [PATCH] phy: fsl-imx8mq-usb: fix typec switch leak on probe error path

[Frank Li <Frank.li@nxp.com>]

On Tue, Jun 02, 2026 at 10:12:41PM +0800, Felix Gu wrote:
> If probe fails after imx95_usb_phy_get_tca() succeeds, the typec
> switch leaks because the only cleanup path was in .remove, which
> never runs on probe failure.
>
> Use devm_add_action_or_reset() so the switch is cleaned up on both
> probe failure and driver removal.  The .remove callback and
> imx95_usb_phy_put_tca() are no longer needed.
>
> Fixes: b58f0f86fd61 ("phy: fsl-imx8mq-usb: add tca function driver for imx95")
> Signed-off-by: Felix Gu <ustc.gu@gmail.com>
> ---

Reviewed-by: Frank Li <Frank.Li@nxp.com>

>  drivers/phy/freescale/phy-fsl-imx8mq-usb.c | 27 ++++++++-------------------
>  1 file changed, 8 insertions(+), 19 deletions(-)
>
> diff --git a/drivers/phy/freescale/phy-fsl-imx8mq-usb.c b/drivers/phy/freescale/phy-fsl-imx8mq-usb.c
> index b05d80e849a1..8af5a4f85698 100644
> --- a/drivers/phy/freescale/phy-fsl-imx8mq-usb.c
> +++ b/drivers/phy/freescale/phy-fsl-imx8mq-usb.c
> @@ -173,8 +173,10 @@ static struct typec_switch_dev *tca_blk_get_typec_switch(struct platform_device
>  	return sw;
>  }
>
> -static void tca_blk_put_typec_switch(struct typec_switch_dev *sw)
> +static void tca_blk_put_typec_switch(void *data)
>  {
> +	struct typec_switch_dev *sw = data;
> +
>  	typec_switch_unregister(sw);
>  }
>
> @@ -248,6 +250,7 @@ static struct tca_blk *imx95_usb_phy_get_tca(struct platform_device *pdev,
>  	struct device *dev = &pdev->dev;
>  	struct resource *res;
>  	struct tca_blk *tca;
> +	int ret;
>
>  	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
>  	if (!res)
> @@ -266,17 +269,11 @@ static struct tca_blk *imx95_usb_phy_get_tca(struct platform_device *pdev,
>  	tca->orientation = TYPEC_ORIENTATION_NORMAL;
>  	tca->sw = tca_blk_get_typec_switch(pdev, imx_phy);
>
> -	return tca;
> -}
> -
> -static void imx95_usb_phy_put_tca(struct imx8mq_usb_phy *imx_phy)
> -{
> -	struct tca_blk *tca = imx_phy->tca;
> -
> -	if (!tca)
> -		return;
> +	ret = devm_add_action_or_reset(&pdev->dev, tca_blk_put_typec_switch, tca->sw);
> +	if (ret)
> +		return ERR_PTR(ret);
>
> -	tca_blk_put_typec_switch(tca->sw);
> +	return tca;
>  }
>
>  static u32 phy_tx_vref_tune_from_property(u32 percent)
> @@ -739,16 +736,8 @@ static int imx8mq_usb_phy_probe(struct platform_device *pdev)
>  	return PTR_ERR_OR_ZERO(phy_provider);
>  }
>
> -static void imx8mq_usb_phy_remove(struct platform_device *pdev)
> -{
> -	struct imx8mq_usb_phy *imx_phy = platform_get_drvdata(pdev);
> -
> -	imx95_usb_phy_put_tca(imx_phy);
> -}
> -
>  static struct platform_driver imx8mq_usb_phy_driver = {
>  	.probe	= imx8mq_usb_phy_probe,
> -	.remove = imx8mq_usb_phy_remove,
>  	.driver = {
>  		.name	= "imx8mq-usb-phy",
>  		.of_match_table	= imx8mq_usb_phy_of_match,
>
> ---
> base-commit: 08484c504b55a98bd100527fbe10a3caf55ff3ff
> change-id: 20260602-imx8mq-typec-20a6f1d1900f
>
> Best regards,
> --
> Felix Gu <ustc.gu@gmail.com>
>