Re: [PATCH] misc/fastrpc: add checked value for dma_set_mask

[Bo YU]

On Thu, Mar 21, 2019 at 5:56 PM Kroah-Hartman
<gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
>
> On Thu, Mar 21, 2019 at 05:31:51PM +0800, Bo YU wrote:
> > On Tue, Mar 19, 2019 at 10:05 AM Bo YU <tsu.yubo@xxxxxxxxx> wrote:
> > >
> > > There be should check return value from dma_set_mask to throw some infos
> > > if fail to set dma mask.
> > >
> > > Detected by CoverityScan, CID# 1443983:  Error handling issues (CHECKED_RETURN)
> > >
> > > Fixes:f6f9279f2bf0 (misc: fastrpc: Add Qualcomm fastrpc basic driver model)
> > > Signed-off-by: Bo YU <tsu.yubo@xxxxxxxxx>
> > > ---
> > >  drivers/misc/fastrpc.c | 7 ++++++-
> > >  1 file changed, 6 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
> > > index 39f832d27288..36d0d5c9cfba 100644
> > > --- a/drivers/misc/fastrpc.c
> > > +++ b/drivers/misc/fastrpc.c
> > > @@ -1184,6 +1184,7 @@ static int fastrpc_cb_probe(struct platform_device *pdev)
> > >         struct fastrpc_session_ctx *sess;
> > >         struct device *dev = &pdev->dev;
> > >         int i, sessions = 0;
> > > +       int rc;
> > >
> > >         cctx = dev_get_drvdata(dev->parent);
> > >         if (!cctx)
> > > @@ -1213,7 +1214,11 @@ static int fastrpc_cb_probe(struct platform_device *pdev)
> > >         }
> > >         cctx->sesscount++;
> > >         spin_unlock(&cctx->lock);
> > > -       dma_set_mask(dev, DMA_BIT_MASK(32));
> > > +       rc = dma_set_mask(dev, DMA_BIT_MASK(32));
> > > +       if (rc) {
> > > +               dev_err(dev, "32-bit DMA enable failed\n");
> > > +               return rc;
> > > +       }
> > >
> > Ping?
> > Do me need resend it?
>
> 2 days?  Please give us time to catch up on patches, right after the
> merge window closed.  This isn't a big deal, we have much higher
> priority patches to review.  It will be gotten to eventually :)
Ok, thank you. I am not sure the trival patch is ok so disturb you :)
>
> thanks,
>
> greg k-h