Re: [PATCH 2/4] usb: typec: tipd: Fix spurious fwnode_handle_put in error path

From: Heikki Krogerus
Date: Wed Nov 16 2022 - 07:19:24 EST


On Mon, Nov 14, 2022 at 06:44:47PM +0100, Sven Peter wrote:
> The err_role_put error path always calls fwnode_handle_put to release
> the fwnode. This path can be reached after probe itself has already
> released that fwnode though. Fix that by moving fwnode_handle_put in the
> happy path to the very end.
>
> Fixes: 18a6c866bb19 ("usb: typec: tps6598x: Add USB role switching logic")
> Signed-off-by: Sven Peter <sven@xxxxxxxxxxxxx>

This looks like stable material as well.

Reviewed-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>

> ---
> drivers/usb/typec/tipd/core.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c
> index ebc786d728e2..824e573af570 100644
> --- a/drivers/usb/typec/tipd/core.c
> +++ b/drivers/usb/typec/tipd/core.c
> @@ -834,7 +834,6 @@ static int tps6598x_probe(struct i2c_client *client)
> ret = PTR_ERR(tps->port);
> goto err_role_put;
> }
> - fwnode_handle_put(fwnode);
>
> if (tps->status & TPS_STATUS_PLUG_PRESENT) {
> ret = tps6598x_read16(tps, TPS_REG_POWER_STATUS, &tps->pwr_status);
> @@ -858,6 +857,7 @@ static int tps6598x_probe(struct i2c_client *client)
> }
>
> i2c_set_clientdata(client, tps);
> + fwnode_handle_put(fwnode);
>
> return 0;
>

thanks,

--
heikki