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Subject: Re: [PATCHv1] firmware: intel_stratix10_service: add hardware
 dependency
To:     Alan Tull <atull@kernel.org>, Greg KH <gregkh@linuxfoundation.org>
Cc:     Richard Gong <richard.gong@linux.intel.com>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        todd.riffel@intel.com, Richard Gong <richard.gong@intel.com>
References: <1548258476-16821-1-git-send-email-richard.gong@linux.intel.com>
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 <CANk1AXR2K5j6iU1y8GGn_8agOUY6ca8xKXPrFGT5Ht6_La7VrA@mail.gmail.com>
From:   Dinh Nguyen <dinguyen@kernel.org>
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Message-ID: <e23f66a1-5cff-5620-7246-e894897b0d17@kernel.org>
Date:   Wed, 23 Jan 2019 10:42:46 -0600
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On 1/23/19 10:37 AM, Alan Tull wrote:
> On Wed, Jan 23, 2019 at 10:00 AM Greg KH <gregkh@linuxfoundation.org> wrote:
> 
> Hi Greg,
> 
>>
>> On Wed, Jan 23, 2019 at 09:47:56AM -0600, richard.gong@linux.intel.com wrote:
>>> From: Richard Gong <richard.gong@intel.com>
>>>
>>> Add a Kconfig dependency to ensure Intel Stratix10 service layer driver
>>> can be built only on the platform that supports it.
>>>
>>> Signed-off-by: Richard Gong <richard.gong@intel.com>
>>> ---
>>>  drivers/firmware/Kconfig | 2 +-
>>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
>>> index f754578..cac16c4 100644
>>> --- a/drivers/firmware/Kconfig
>>> +++ b/drivers/firmware/Kconfig
>>> @@ -218,7 +218,7 @@ config FW_CFG_SYSFS_CMDLINE
>>>
>>>  config INTEL_STRATIX10_SERVICE
>>>       tristate "Intel Stratix10 Service Layer"
>>> -     depends on HAVE_ARM_SMCCC
>>> +     depends on ARCH_STRATIX10 && HAVE_ARM_SMCCC
>>
>> That's lame, what about building for testing?
> 
> Do you mean this instead?
> 
> depends on (ARCH_STRATIX10 && HAVE_ARM_SMCCC) || COMPILE_TEST
> 
>>
>> And is this needed now, for 5.0-final, or can it wait for 5.1?
> 
> This change will reduce kernel size for most arm64.  It can go into
> whichever kernel.  We can resubmit allowing for COMPILE_TEST.
> 

I don't see how this is true? ARM64 has a single defconfig and
ARCH_STRATIX10 is included in that defconfig. I don't see how adding
this dependency will reduce the kernel size for most arm64?

Dinh