netdev - Re: [PATCH net] bnxt_en: fix error return code in bnxt_init

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Message-ID: <CACKFLimkjTmZZe4Wpy0YERit=nVa6tPkUQ9L5Pwx4gYg-=Qc7w@mail.gmail.com>
Date:   Thu, 19 Nov 2020 23:17:01 -0800
From:   Michael Chan <michael.chan@...adcom.com>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     Edwin Peer <edwin.peer@...adcom.com>,
        Zhang Changzhong <zhangchangzhong@...wei.com>,
        "David S . Miller" <davem@...emloft.net>,
        Prashant Sreedharan <prashant@...adcom.com>,
        Jeffrey Huang <huangjw@...adcom.com>,
        Eddie Wai <eddie.wai@...adcom.com>,
        netdev <netdev@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net] bnxt_en: fix error return code in bnxt_init_board()

On Thu, Nov 19, 2020 at 9:53 PM Jakub Kicinski <kuba@...nel.org> wrote:
>
> On Thu, 19 Nov 2020 10:53:23 -0800 Edwin Peer wrote:
> > > Fix to return a negative error code from the error handling
> > > case instead of 0, as done elsewhere in this function.
> > >
> > > Fixes: c0c050c58d84 ("bnxt_en: New Broadcom ethernet driver.")
> > > Reported-by: Hulk Robot <hulkci@...wei.com>
> > > Signed-off-by: Zhang Changzhong <zhangchangzhong@...wei.com>
>
> > >         if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)) != 0 &&
> > >             dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)) != 0) {
> > >                 dev_err(&pdev->dev, "System does not support DMA, aborting\n");
> > > +               rc = -EIO;
> > >                 goto init_err_disable;
>
> Edwin, please double check if this shouldn't jump to
> pci_release_regions() (or maybe it's harmless 'cause
> PCI likes to magically release things on its own).

Good point.  We definitely should call pci_release_regions() for correctness.

I will send out the patch shortly.  Thanks.

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