linux-kernel - Re: Regression caused by commit 882164a4a928

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Message-ID: <20180510130912.72738106@wiggum>
Date:   Thu, 10 May 2018 13:09:12 +0200
From:   Michael Büsch <m@...s.ch>
To:     Matt Redfearn <matt.redfearn@...s.com>
Cc:     Larry Finger <Larry.Finger@...inger.net>,
        Rafał Miłecki <zajec5@...il.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        linux-wireless <linux-wireless@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Rafał Miłecki <zajec5@...il.com>
Subject: Re: Regression caused by commit 882164a4a928

On Thu, 10 May 2018 11:24:12 +0100
Matt Redfearn <matt.redfearn@...s.com> wrote:

> > Could you please try this?
> > 
> > config SSB_DRIVER_PCICORE_POSSIBLE
> > 	depends on SSB_PCIHOST
> > 
> > config SSB_PCICORE_HOSTMODE
> > 	depends on SSB_DRIVER_PCICORE && SSB_DRIVER_MIPS && (SSB = y) && PCI_DRIVERS_LEGACY
> > 
> > 
> > The affected API pcibios_enable_device() and register_pci_controller()
> > is only used in HOSTMODE. So I think it makes sense to make HOSTMODE
> > depend on SSB=y and PCI_DRIVERS_LEGACY.
> > 
> > PCICore itself does not use the API, if hostmode is disabled.
> >   
> 
> Sure - I've tested the patch:
> 
> --- a/drivers/ssb/Kconfig
> +++ b/drivers/ssb/Kconfig
> @@ -117,7 +117,7 @@ config SSB_SERIAL
> 
>   config SSB_DRIVER_PCICORE_POSSIBLE
>          bool
> -       depends on SSB_PCIHOST && SSB = y
> +       depends on SSB_PCIHOST
>          default y
> 
>   config SSB_DRIVER_PCICORE
> @@ -131,7 +131,7 @@ config SSB_DRIVER_PCICORE
> 
>   config SSB_PCICORE_HOSTMODE
>          bool "Hostmode support for SSB PCI core"
> -       depends on SSB_DRIVER_PCICORE && SSB_DRIVER_MIPS
> +       depends on SSB_DRIVER_PCICORE && SSB_DRIVER_MIPS && (SSB = y) && 
> PCI_DRIVERS_LEGACY
>          help
>            PCIcore hostmode operation (external PCI bus).
> 
> 
> And this seems to work for MIPS, we don't get the build error from 
> building the SSB module under nec_markeins allmodconfig, and 
> SSB_PCICORE_HOSTMODE=y for bcm47xx allmodconfig, which selects SSB=y.
> 
> So this looks like a good fix for MIPS, at least.
> 
> Tested-by: Matt Redfearn <matt.redfearn@...s.com>


Thanks.
Could you please submit it?
You can add my Acked-by.

-- 
Michael

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