Re: [PATCH] video: fbdev: fsl: fix kernel crash when diu_ops is not implemented

[Scott Wood <scottwood@freescale.com>]

On Tue, 2015-11-24 at 10:59 -0600, Scott Wood wrote:
> On Tue, 2015-11-24 at 18:15 +0200, Tomi Valkeinen wrote:
> > 
> > On 24/11/15 18:04, Timur Tabi wrote:
> > > On Tue, Nov 24, 2015 at 5:46 AM, Tomi Valkeinen <tomi.valkeinen@ti.com>
> > > wrote:
> > > > On 24/11/15 08:27, Dongsheng Wang wrote:
> > > > > @@ -1697,6 +1700,9 @@ static int fsl_diu_probe(struct
> > > > > platform_device
> > > > > *pdev)
> > > > >       unsigned int i;
> > > > >       int ret;
> > > > > 
> > > > > +     if (!diu_ops.set_pixel_clock)
> > > > > +             return -ENODEV;
> > > > > +
> > > > >       data = dmam_alloc_coherent(&pdev->dev, sizeof(struct
> > > > > fsl_diu_data),
> > > > >                                  &dma_addr, GFP_DMA | __GFP_ZERO);
> > > > >       if (!data)
> > > > > 
> > > > 
> > > > Thanks, queued for 4.5.
> > > 
> > > Could you please wait for me to review the patch first?  I am the
> > > maintainer for the driver, and I see a problem with it.
> > 
> > Sorry, I was too hasty (and tired). I thought I was looking at a patch
> > that's been on the list for a while, but apparently it was only posted
> > today...
> > 
> > Anyway, dropped this.
> 
> Also, this is a bugfix (certain platforms are currently crashing on boot)
> and
> once review is settled should go into 4.4.

...and stable, since the defconfig changes that enabled this driver on the
problematic platforms went into 4.3.

-Scott