linux-kernel - Re: [PATCH] powerpc/44x: Make AKEBONO depends on NET

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Message-ID: <bda28b40-b573-cff5-817a-3ddca1d8f969@huawei.com>
Date:   Tue, 31 Mar 2020 11:05:26 +0800
From:   Yuehaibing <yuehaibing@...wei.com>
To:     Michael Ellerman <mpe@...erman.id.au>,
        <mporter@...nel.crashing.org>, <benh@...nel.crashing.org>,
        <paulus@...ba.org>
CC:     <alistair@...ple.id.au>, <linuxppc-dev@...ts.ozlabs.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] powerpc/44x: Make AKEBONO depends on NET

On 2020/3/31 8:58, Michael Ellerman wrote:
> YueHaibing <yuehaibing@...wei.com> writes:
>> Fix Kconfig warnings:
>>
>> WARNING: unmet direct dependencies detected for NETDEVICES
>>   Depends on [n]: NET [=n]
>>   Selected by [y]:
>>   - AKEBONO [=y] && PPC_47x [=y]
>>
>> WARNING: unmet direct dependencies detected for ETHERNET
>>   Depends on [n]: NETDEVICES [=y] && NET [=n]
>>   Selected by [y]:
>>   - AKEBONO [=y] && PPC_47x [=y]
>>
>> AKEBONO select NETDEVICES and ETHERNET unconditionally,
> 
> It shouldn't do that, that's the job of a defconfig.
> 
> It might want to enable NET_VENDOR_IBM iff the config already has NET
> and other dependencies enabled.
> 
> So the patch below might work?

Yes, It works for me, Thanks!

Tested-by: YueHaibing <yuehaibing@...wei.com> # build-tested

> 
> cheers
> 
> diff --git a/arch/powerpc/platforms/44x/Kconfig b/arch/powerpc/platforms/44x/Kconfig
> index 25ebe634a661..32aac4f40f1b 100644
> --- a/arch/powerpc/platforms/44x/Kconfig
> +++ b/arch/powerpc/platforms/44x/Kconfig
> @@ -207,9 +207,7 @@ config AKEBONO
>  	select PPC4xx_HSTA_MSI
>  	select I2C
>  	select I2C_IBM_IIC
> -	select NETDEVICES
> -	select ETHERNET
> -	select NET_VENDOR_IBM
> +	imply NET_VENDOR_IBM
>  	select IBM_EMAC_EMAC4 if IBM_EMAC
>  	select USB if USB_SUPPORT
>  	select USB_OHCI_HCD_PLATFORM if USB_OHCI_HCD
> 
> 
> 
>> If NET is not set, build fails. Add this dependcy to fix this.
>>
>> Fixes: 2a2c74b2efcb ("IBM Akebono: Add the Akebono platform")
>> Signed-off-by: YueHaibing <yuehaibing@...wei.com>
>> ---
>>  arch/powerpc/platforms/44x/Kconfig | 1 +
>>  1 file changed, 1 insertion(+)
>>
>> diff --git a/arch/powerpc/platforms/44x/Kconfig b/arch/powerpc/platforms/44x/Kconfig
>> index 25ebe634a661..394f662d7df2 100644
>> --- a/arch/powerpc/platforms/44x/Kconfig
>> +++ b/arch/powerpc/platforms/44x/Kconfig
>> @@ -199,6 +199,7 @@ config FSP2
>>  config AKEBONO
>>  	bool "IBM Akebono (476gtr) Support"
>>  	depends on PPC_47x
>> +	depends on NET
>>  	select SWIOTLB
>>  	select 476FPE
>>  	select PPC4xx_PCI_EXPRESS
>> -- 
>> 2.17.1
> 
> .
>