linux-kernel - Re: [PATCH v2] uhci-platform: use devm

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Date:	Wed, 11 Jun 2014 16:45:03 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Julia Lawall <julia.lawall@...6.fr>
cc:	Himangi Saraogi <himangi774@...il.com>,
	Tony Prisk <linux@...sktech.co.nz>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] uhci-platform: use devm_ioremap resource

On Wed, 11 Jun 2014, Julia Lawall wrote:

> > > v2: pass correct arguments to devm_ioremap_resource
> > > Not compile tested due to incompatible architecture.
> >
> > uhci-platform is compatible with all architectures.  But you have to
> > add it to the .config file by hand.
> 
> What should one do exactly?  I added
> 
> CONFIG_USB_UHCI_PLATFORM=y
> 
> to the end of my .config file, but then running make just overwrites it:

By golly, you're right...  I didn't realize it would do that.

I guess you have to edit the drivers/usb/host/Kconfig file, changing

config USB_UHCI_PLATFORM
	bool
	default y if ARCH_VT8500

to

config USB_UHCI_PLATFORM
	bool
	default y

or something equivalent.

> 
> > make drivers/usb/host/uhci-platform.o
> scripts/kconfig/conf --silentoldconfig Kconfig
> #
> # configuration written to .config
> #
>   CHK     include/config/kernel.release
>   CHK     include/generated/uapi/linux/version.h
>   CHK     include/generated/utsrelease.h
>   CALL    scripts/checksyscalls.sh
>   CC      drivers/usb/host/uhci-platform.o
> drivers/usb/host/uhci-platform.c:13:38: warning: Ąstruct usb_hcdĸ declared
> inside parameter list [enabled by default]
>  static int uhci_platform_init(struct usb_hcd *hcd)

Do

	make drivers/usb/host/uhci-hcd.o

instead of

	make drivers/usb/host/uhci-platform.o

Alan Stern

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