Re: [PATCH] spi: sifive: check return value for platform_get_resource()

[Aurabindo Jayamohanan]

âââââââ Original Message âââââââ
On Tuesday, September 17, 2019 2:53 PM, Baolin Wang <baolin.wang@xxxxxxxxxx> wrote:

> On Tue, 17 Sep 2019 at 17:12, Aurabindo Jayamohanan mail@xxxxxxxxxxxx wrote:
>
> > platform_get_resource() may return NULL. If it is so, return -ENXIO
> >
> > Signed-off-by: Aurabindo Jayamohanan mail@xxxxxxxxxxxx
> >
> > -------------------------------------------------------
> >
> > drivers/spi/spi-sifive.c | 6 ++++++
> > 1 file changed, 6 insertions(+)
> > diff --git a/drivers/spi/spi-sifive.c b/drivers/spi/spi-sifive.c
> > index 93ec2c6cdbfd..67485067a694 100644
> > --- a/drivers/spi/spi-sifive.c
> > +++ b/drivers/spi/spi-sifive.c
> > @@ -308,6 +308,12 @@ static int sifive_spi_probe(struct platform_device *pdev)
> > platform_set_drvdata(pdev, master);
> >
> >         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> >
> >
> > -         if (!res) {
> >
> >
> > -                 dev_err(&pdev->dev, "no IOMEM resource found\\n");
> >
> >
> > -                 ret = -ENXIO;
> >
> >
> > -                 goto put_master;
> >
> >
> > -         }
> >
> >
>
> Seems unnecessary, the devm_ioremap_resource() already validated if
> the resource is available.
>

Okay, thanks for the headsup