linux-kernel - Re: [PATCH v2] usb: Move definition of USB_EHCI_BIG_ENDIAN

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Date:	Sat, 10 Aug 2013 07:55:04 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	David Daney <ddaney.cavm@...il.com>
cc:	linux-usb@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	<linux-kernel@...r.kernel.org>,
	David Daney <david.daney@...ium.com>
Subject: Re: [PATCH v2] usb: Move definition of USB_EHCI_BIG_ENDIAN_MMIO et
 al. out side of the ifs.

On Fri, 9 Aug 2013, David Daney wrote:

> From: David Daney <david.daney@...ium.com>
> 
> When CONFIG_USB_SUPPORT is not selected we get things like:
> 
> scripts/kconfig/mconf Kconfig
> warning: (MIPS_SEAD3 && PMC_MSP && CPU_CAVIUM_OCTEON) selects USB_EHCI_BIG_ENDIAN_MMIO which has unmet direct dependencies (USB_SUPPORT && USB)
> 
> It is much cleaner to make the various system Kconfigs select
> USB_EHCI_BIG_ENDIAN_MMIO rather than move the system config
> information into USB's Kconfig, but the warnings are annoying.
> 
> Eliminate the warning by moving the definition of
> USB_EHCI_BIG_ENDIAN_MMIO outside of all the Kconfig if statements.
> While we are at it move USB_OHCI_BIG_ENDIAN_DESC,
> USB_OHCI_BIG_ENDIAN_MMIO, USB_OHCI_LITTLE_ENDIAN and
> USB_EHCI_BIG_ENDIAN_DESC too, as they could very well suffer similar
> problems for other systems.
> 
> Get rid of the redundant "default n" in USB_OHCI_BIG_ENDIAN_DESC and
> USB_OHCI_BIG_ENDIAN_MMIO
> 
> Signed-off-by: David Daney <david.daney@...ium.com>
> Cc: Alan Stern <stern@...land.harvard.edu>
> ---
> 
> Change from v1: Added USB_OHCI_BIG_ENDIAN_DESC,
> USB_OHCI_BIG_ENDIAN_MMIO, USB_OHCI_LITTLE_ENDIAN and
> USB_EHCI_BIG_ENDIAN_DESC to the set of symbols moved.

Acked-by: Alan Stern <stern@...land.harvard.edu>


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