Re: [PATCH v4 19/23] ata: ahci: Add DWC AHCI SATA controller support

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On Fri, Jun 10, 2022 at 09:34:46AM -0700, Randy Dunlap wrote:
> Hi--

Hi Randy

> 
> On 6/10/22 01:17, Serge Semin wrote:
> > diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
> > index bb45a9c00514..95e0e022b5bb 100644
> > --- a/drivers/ata/Kconfig
> > +++ b/drivers/ata/Kconfig
> > @@ -176,6 +176,16 @@ config AHCI_DM816
> >  
> >  	  If unsure, say N.
> >  
> > +config AHCI_DWC
> > +	tristate "Synopsys DWC AHCI SATA support"
> > +	select SATA_HOST
> > +	default SATA_AHCI_PLATFORM
> 

> I don't think this needs to default to SATA_AHCI_PLATFORM.
> It might build a driver that isn't needed.
> And it's incompatible with "If unsure, say N."

Basically you are right, but this particular setting is connected with
the modification I've done in the drivers/ata/ahci_platform.c driver
in the framework of this commit. I've moved the "snps,spear-ahci" and
"snps,dwc-ahci" compatible devices support to the new driver. Thus
should I omit the SATA_AHCI_PLATFORM dependency their default kernel
configs will lack the corresponding controllers support. If it's not a
problem and we can rely on the kernel build system ability to ask
whether the new config needs to be set/cleared, then I would be very
happy to drop the default setting. What do you think?

-Sergey

> 
> > +	help
> > +	  This option enables support for the Synopsys DWC AHCI SATA
> > +	  controller implementation.
> > +
> > +	  If unsure, say N.
> 
> -- 
> ~Randy



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