Re: [PATCHv2] EDAC, altera: Move Stratix10 SDRAM ECC to peripheral

[Thor Thayer]

Hi James,

On 7/25/19 7:46 AM, James Morse wrote:
> Hi Thor,
>
> On 12/07/2019 19:28, thor.thayer@xxxxxxxxxxxxxxx wrote:
> > From: Thor Thayer <thor.thayer@xxxxxxxxxxxxxxx>
> >
> > ARM32 SoCFPGAs had separate IRQs for SDRAM. ARM64 SoCFPGAs
> > send all DBEs to SError so filtering by source is necessary.
> >
> > The Stratix10 SDRAM ECC is a better match with the generic
> > Altera peripheral ECC framework because the linked list can
> > be searched to find the ECC block offset and printout
> > the DBE Address.
>
>
> > diff --git a/drivers/edac/altera_edac.c b/drivers/edac/altera_edac.c
> > index c2e693e34d43..09a80b53acea 100644
> > --- a/drivers/edac/altera_edac.c
> > +++ b/drivers/edac/altera_edac.c
>
> > @@ -2231,13 +2275,15 @@ static int altr_edac_a10_probe(struct platform_device *pdev)
> >   		    of_device_is_compatible(child, "altr,socfpga-dma-ecc") ||
> >   		    of_device_is_compatible(child, "altr,socfpga-usb-ecc") ||
> >   		    of_device_is_compatible(child, "altr,socfpga-qspi-ecc") ||
> > +#ifdef CONFIG_EDAC_ALTERA_SDRAM
> > +		    of_device_is_compatible(child, "altr,sdram-edac-s10") ||
> > +#endif
> >   		    of_device_is_compatible(child, "altr,socfpga-sdmmc-ecc"))
>
> I'm just curious: This list looks suspiciously like the altr_edac_a10_device_of_match[]
> list. Is there a reason it can't use of_match_device() here?
Good point. Yes, it does look very much like the match list. Although 
of_match_device() doesn't fit with the available parameters (device 
pointer), your question prompted me to look closer and I noticed 
of_match_node() is perfect.

I'll create a version 3 with this change.

Thanks for reviewing!

> >   
> >   			altr_edac_a10_device_add(edac, child);
> >   
> >   #ifdef CONFIG_EDAC_ALTERA_SDRAM
> > -		else if ((of_device_is_compatible(child, "altr,sdram-edac-a10")) ||
> > -			 (of_device_is_compatible(child, "altr,sdram-edac-s10")))
> > +		else if (of_device_is_compatible(child, "altr,sdram-edac-a10"))
> >   			of_platform_populate(pdev->dev.of_node,
> >   					     altr_sdram_ctrl_of_match,
> >   					     NULL, &pdev->dev);
>
>
> Acked-by: James Morse <james.morse@xxxxxxx>
>
>
> Thanks,
>
> James