Re: [PATCH v3 1/9] dmaengine: idxd: fix memory leak in error handling path of idxd_setup_wqs()

[Shuai Xue]

在 2025/3/9 17:10, Markus Elfring 写道:
> …
> > +++ b/drivers/dma/idxd/init.c
> …
> > @@ -203,7 +201,6 @@ static int idxd_setup_wqs(struct idxd_device *idxd)
> >   		wq->enqcmds_retries = IDXD_ENQCMDS_RETRIES;
> >   		wq->wqcfg = kzalloc_node(idxd->wqcfg_size, GFP_KERNEL, dev_to_node(dev));
> >   		if (!wq->wqcfg) {
> > -			put_device(conf_dev);
> >   			rc = -ENOMEM;
> >   			goto err;
> >   		}
>
> I suggest to move such an error code assignment also to the end of this function implementation.

I prefer to set error code before jumping to error handling label
so that we can extend/change the error code in any future path.

> Regards,
> Markus

Thanks for valuable comments.
Best Regards,
Shuai