linux-kernel - Re: 2.6.21-rc2-mm1: drivers/usb/host/ohci-ssb.c doesn't compile

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Message-ID: <20070305183702.GN3441@stusta.de>
Date:	Mon, 5 Mar 2007 19:37:02 +0100
From:	Adrian Bunk <bunk@...sta.de>
To:	Greg KH <greg@...ah.com>
Cc:	Michael Buesch <mb@...sch.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linville@...driver.com, linux-kernel@...r.kernel.org,
	linux-wireless@...r.kernel.org, dbrownell@...rs.sourceforge.net,
	linux-usb-devel@...ts.sourceforge.net
Subject: Re: 2.6.21-rc2-mm1: drivers/usb/host/ohci-ssb.c doesn't compile

On Mon, Mar 05, 2007 at 10:26:10AM -0800, Greg KH wrote:
> On Mon, Mar 05, 2007 at 12:26:45PM +0100, Michael Buesch wrote:
> > On Monday 05 March 2007 11:57, Michael Buesch wrote:
> > > > >   CC      drivers/usb/host/ohci-hcd.o
> > > > > In file included from 
> > > > > /home/bunk/linux/kernel-2.6/linux-2.6.21-rc2-mm1/drivers/usb/host/ohci-hcd.c:931:
> > > > > /home/bunk/linux/kernel-2.6/linux-2.6.21-rc2-mm1/drivers/usb/host/ohci-ssb.c:47: error: request for member 'hcd_priv_size' in something not a structure or union
> > > > 
> > > > Seems like there was a comma missing.
> > > > There also seems to be some Kconfig problem. will fix that.
> > > > 
> > > > > /home/bunk/linux/kernel-2.6/linux-2.6.21-rc2-mm1/drivers/usb/host/ohci-ssb.c:47: error: 'ssb_ohci_device' undeclared here (not in a function)
> > > > > /home/bunk/linux/kernel-2.6/linux-2.6.21-rc2-mm1/drivers/usb/host/ohci-ssb.c:52: error: 'ssb_ohci_reset' undeclared here (not in a function)
> > > > > /home/bunk/linux/kernel-2.6/linux-2.6.21-rc2-mm1/drivers/usb/host/ohci-ssb.c:53: error: 'ssb_ohci_start' undeclared here (not in a function)
> > > > > ...
> > > > > make[4]: *** [drivers/usb/host/ohci-hcd.o] Error 1
> > > > > 
> > > > > <--  snip  -->
> > > 
> > > Actually, it seems like I will run into other kinds of nasty problems
> > > due to stupid design of the HCD code. The OHCI code #includes
> > > the various drivers, which have a module_init each. So if you
> > > compile PCI and SSB support, you have two module_init for one
> > > OHCI module. Not sure how to fix this. Any idea?
> > 
> > A real problem is that the HCD core seems to have the assumption
> > built-in that there can only be one OHCI driver per machine/arch.
> > That's not the case for SSB, where we can have both PCI and SSB
> > bus enabled, so both ohci drivers compiled.
> > Any idea? Greg perhaps?
> 
> David has provided hints on how to do this in the past on the
> linux-usb-devel list if I remember correctly.

Is there any good reason why we can't split the OHCI drivers properly 
into separate modules?

> thanks,
> 
> greg k-h

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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