linux-kernel - Re: [PATCH][next] NTB: EPF: set pointer addr to null using NULL rather than 0

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Date:   Fri, 12 Aug 2022 10:05:46 -0400
From:   Jon Mason <jdmason@...zu.us>
To:     Bjorn Helgaas <helgaas@...nel.org>
Cc:     Colin Ian King <colin.i.king@...il.com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Frank Li <Frank.Li@....com>, linux-pci@...r.kernel.org,
        kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH][next] NTB: EPF: set pointer addr to null using NULL
 rather than 0

On Mon, Jun 27, 2022 at 03:28:58PM -0500, Bjorn Helgaas wrote:
> On Thu, Jun 23, 2022 at 05:57:09PM +0100, Colin Ian King wrote:
> > The pointer addr is being set to null using 0. Use NULL instead.
> > 
> > Cleans up sparse warning:
> > warning: Using plain integer as NULL pointer
> 
> Another one for Jon; fixes this commit:
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=ff32fac00d97
> 
> > Signed-off-by: Colin Ian King <colin.i.king@...il.com>
> > ---
> >  drivers/pci/endpoint/functions/pci-epf-vntb.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/pci/endpoint/functions/pci-epf-vntb.c b/drivers/pci/endpoint/functions/pci-epf-vntb.c
> > index ebf7e243eefa..fb31c868af6a 100644
> > --- a/drivers/pci/endpoint/functions/pci-epf-vntb.c
> > +++ b/drivers/pci/endpoint/functions/pci-epf-vntb.c
> > @@ -605,7 +605,7 @@ static int epf_ntb_mw_bar_init(struct epf_ntb *ntb)
> >  
> >  		ntb->epf->bar[barno].barno = barno;
> >  		ntb->epf->bar[barno].size = size;
> > -		ntb->epf->bar[barno].addr = 0;
> > +		ntb->epf->bar[barno].addr = NULL;
> >  		ntb->epf->bar[barno].phys_addr = 0;
> >  		ntb->epf->bar[barno].flags |= upper_32_bits(size) ?
> >  				PCI_BASE_ADDRESS_MEM_TYPE_64 :
> > -- 
> > 2.35.3
> > 

Sorry for the extremely long delay in response.  This series is in my
ntb branch and will be in my pull request for v5.20 which should be
going out later today.

Thanks,
Jon