RE: [PATCH 1/1] DaVinci: MMC: MMC/SD controller driver forDaVinci/DM6446.

From: Kumar, Purushotam
Date: Tue Mar 17 2009 - 03:30:39 EST


> I noticed a newish bug in probe() ...
>
> On Monday 16 March 2009, Purushotam Kumar wrote:
> > +       if (!pdata || pdata->wires == 4 || pdata->wires == 0)
> > +               mmc->caps |= MMC_CAP_4_BIT_DATA;
>
> So pdata may be null. But, if it is, then ...
>
> > +
> > +       mmc->ops = &mmc_davinci_ops;
> > +       mmc->f_min = 312500;
> > +       mmc->f_max = 25000000;
> > +       if (pdata->max_freq)
> > +               mmc->f_max = pdata->max_freq;
>
> Oops!
>
> > +       if (pdata->caps)
> > +               mmc->caps |= pdata->caps;
>
> Double oops!
>

I will add NULL checking for pdata.
-Purushotam
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