[U-Boot] [PATCH v1] arch/x86: Select USB before selecting host driver

Bin Meng bmeng.cn at gmail.com
Mon Jul 10 02:14:17 UTC 2017


+Simon,

Hi Andy,

On Wed, Jul 5, 2017 at 9:09 PM, Tom Rini <trini at konsulko.com> wrote:
> On Wed, Jul 05, 2017 at 08:19:27PM +0800, Bin Meng wrote:
>> +Marek,
>>
>> Hi Andy,
>>
>> On Wed, Jul 5, 2017 at 5:36 PM, Andy Shevchenko
>> <andy.shevchenko at gmail.com> wrote:
>> > On Wed, Jul 5, 2017 at 12:36 PM, Andy Shevchenko
>> > <andy.shevchenko at gmail.com> wrote:
>> >> On Wed, Jul 5, 2017 at 8:23 AM, Bin Meng <bmeng.cn at gmail.com> wrote:
>> >
>> >> So, options are:
>> >> 1) apply my patch
>> >> 2) remove selection of the host at least for X86.
>> >
>> > 3) move hosts out of "if USB".
>> >
>>
>> 4) select USB in USB_EHCI_HCD?
>>
>> Not sure which option is the best way.
>
> So, to be clear, CONFIG_USB is not used in the code.  It's a
> Kconfig-only option we can / should use to make navigation and
> dependencies easier.  I would think that USB needs to be enabled for any
> USB-related choice to be visible (so things can depends on USB or be
> hidden under if USB, depending on overall file context).
>
> So I would expect X86 (and most ARCH_xxx under ARM and other cases) to
> at least imply USB, if not select it.
>
> And peeking at the kernel, this maybe should be CONFIG_USB_SUPPORT not
> CONFIG_USB, to be clearer?

If we don't hear comments from others, let's do like what you
proposed, but please also update other x86 boards defconfig files to
remove CONFIG_USB there.

Regards,
Bin


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