linux-kernel - Re: Droid 4: very confusing config around OHCI_OMAP3

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Message-ID: <20180503192838.GY98604@atomide.com>
Date:   Thu, 3 May 2018 12:28:38 -0700
From:   Tony Lindgren <tony@...mide.com>
To:     Pavel Machek <pavel@....cz>
Cc:     kernel list <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-omap@...r.kernel.org, sre@...nel.org, nekit1000@...il.com,
        mpartap@....net, merlijn@...zup.org
Subject: Re: Droid 4: very confusing config around OHCI_OMAP3_HCD

* Pavel Machek <pavel@....cz> [180503 19:27]:
> Hi!
> 
> For power management experiments, I tried
> 
> CONFIG_USB_OHCI_HCD=y
> CONFIG_USB_OHCI_HCD_OMAP3=m
> CONFIG_USB_OHCI_HCD_PLATFORM=y
> 
> and could not find resulting .ko.
> 
> Help text says:
> 
> CONFIG_USB_OHCI_HCD_OMAP3:
> 
> This option is deprecated now and the driver was removed, use
> USB_OHCI_HCD_PLATFORM instead.
> 
> Enables support for the on-chip OHCI controller on
> OMAP3 and later chips.
> 
> Which may partly explain it. But if the option no longer does
> anything, why keep it? Certainly second part is confusing if option is
> NOP...

Yeah it's ohci-platform now, I think we decided to keep the old one
around to avoid breaking people's .config files for booting rather
than silently fail.

Regards,

Tony