At 2022-05-11 14:44:50, "Marc Kleine-Budde" <mkl@xxxxxxxxxxxxxx> wrote: >On 10.05.2022 23:38:38, Bernard Zhao wrote: >> The variable fi and bi only used in branch if (!dev->prev_siblings) >> , fi & bi not kmalloc in else branch, so move kfree into branch >> if (!dev->prev_siblings),this change is to cleanup the code a bit. > >Please move the variable declaration into that scope, too. Adjust the >error handling accordingly. Hi Marc: I am not sure if there is some gap. If we move the variable declaration into that scope, then each error branch has to do the kfree job, like: if (err) { dev_err(dev->netdev->dev.parent, "unable to read %s firmware info (err %d)\n", pcan_usb_pro.name, err); kfree(bi); kfree(fi); kfree(usb_if); return err; } I am not sure if this looks a little less clear? Thanks! BR//Bernard > >regards, >Marc > >-- >Pengutronix e.K. | Marc Kleine-Budde | >Embedded Linux | https://www.pengutronix.de | >Vertretung West/Dortmund | Phone: +49-231-2826-924 | >Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |