linux-kernel - Re: [PATCH] scsi: mpi3mr: Fix an error code when probing the driver

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Date:   Wed, 13 Apr 2022 17:27:04 +0800
From:   Zheyu Ma <zheyuma97@...il.com>
To:     Sathya Prakash Veerichetty <sathya.prakash@...adcom.com>
Cc:     Kashyap Desai <kashyap.desai@...adcom.com>,
        Sumit Saxena <sumit.saxena@...adcom.com>,
        Sreekanth Reddy <sreekanth.reddy@...adcom.com>,
        jejb@...ux.ibm.com,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        mpi3mr-drvr-developers <mpi3mr-linuxdrv.pdl@...adcom.com>,
        linux-scsi <linux-scsi@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] scsi: mpi3mr: Fix an error code when probing the driver

On Wed, Apr 13, 2022 at 1:58 AM Sathya Prakash Veerichetty
<sathya.prakash@...adcom.com> wrote:
>
> On Sat, Apr 9, 2022 at 7:49 AM Zheyu Ma <zheyuma97@...il.com> wrote:
> >
> > During the process of driver probing, probe function should return < 0
> > for failure, otherwise kernel will treat value >= 0 as success.
> >
> > Signed-off-by: Zheyu Ma <zheyuma97@...il.com>
> > ---
> >  drivers/scsi/mpi3mr/mpi3mr_os.c | 5 +++--
> >  1 file changed, 3 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c
> > index f7cd70a15ea6..240bfdf9788b 100644
> > --- a/drivers/scsi/mpi3mr/mpi3mr_os.c
> > +++ b/drivers/scsi/mpi3mr/mpi3mr_os.c
> > @@ -4222,9 +4222,10 @@ mpi3mr_probe(struct pci_dev *pdev, const struct pci_device_id *id)
> >         struct Scsi_Host *shost = NULL;
> >         int retval = 0, i;
> >
> > -       if (osintfc_mrioc_security_status(pdev)) {
> > +       retval = osintfc_mrioc_security_status(pdev);
> > +       if (retval) {
> >                 warn_non_secure_ctlr = 1;
> > -               return 1; /* For Invalid and Tampered device */
> > +               return retval; /* For Invalid and Tampered device */
> >         }
> NAK. The driver has to return 1 when invalid/tampered controllers are
> detected just to say the controller is held by the mpi3mr driver
> without any actual operation.

Thanks for your explanation, I will drop this patch.

Zheyu Ma