linux-kernel - Re: Linux 2.6.20-rc4

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Message-ID: <45A340E4.5030702@246tNt.com>
Date:	Tue, 09 Jan 2007 08:14:44 +0100
From:	Sylvain Munaut <tnt@...tNt.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
CC:	Greg KH <gregkh@...e.de>,
	Mariusz Kozlowski <m.kozlowski@...land.pl>,
	linuxppc-dev@...abs.org, Linus Torvalds <torvalds@...l.org>,
	paulus@...ba.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Linux 2.6.20-rc4

Benjamin Herrenschmidt wrote:
> On Mon, 2007-01-08 at 16:56 -0800, Greg KH wrote:
>> On Tue, Jan 09, 2007 at 11:38:59AM +1100, Benjamin Herrenschmidt wrote:
>>> On Mon, 2007-01-08 at 15:58 +0100, Sylvain Munaut wrote:
>>>> Don't build ohci as module for now.
>>>> A fix for that is already in gregkh usb tree for 2.6.21
>>> Do you mean that as-is, powerpc defconfigs cannot build USB as a module
>>> in 2.6.20 ? That is unacceptable as a regression. We need a fix in
>>> 2.6.20.
>>>
>>> Greg, what is the status there ?
>> Hm, for some reason I thought your patches were not needed until 2.6.21.
>
> My endian patches aren't, but Sylvain' are based on mines so ... Maybe
> if Sylvain rebases his ?

FWIW, the patch does apply fine (at least the first one, which is needed) :

tnt@...omi linux-2.6-mpc52xx-new $ patch -p1 --dry-run <
ohci-rework-bus-glue-integration-to-allow-several-at-once.patch
patching file drivers/usb/host/ohci-at91.c
patching file drivers/usb/host/ohci-au1xxx.c
patching file drivers/usb/host/ohci-ep93xx.c
patching file drivers/usb/host/ohci-hcd.c
patching file drivers/usb/host/ohci-lh7a404.c
patching file drivers/usb/host/ohci-omap.c
patching file drivers/usb/host/ohci-pci.c
Hunk #1 succeeded at 238 (offset -73 lines).
patching file drivers/usb/host/ohci-pnx4008.c
patching file drivers/usb/host/ohci-pnx8550.c
patching file drivers/usb/host/ohci-ppc-soc.c
patching file drivers/usb/host/ohci-pxa27x.c
patching file drivers/usb/host/ohci-s3c2410.c
patching file drivers/usb/host/ohci-sa1111.c

The offset in ohci-pci.c is harmless.

But maybe the question we should ask is why would it build
drivers/usb/host/ohci-ppc-soc.c for an iMac G3 ... Because that problem
(ohci multiple glue in module) is there since a long time, just never
spotted before.

arch/powerpc/KConfig :

config PPC_EFIKA
        bool "bPlan Efika 5k2. MPC5200B based computer"
        depends on PPC_MULTIPLATFORM && PPC32
        select PPC_RTAS
        select RTAS_PROC
        select PPC_MPC52xx
        select PPC_NATIVE
        default y
               ^^^

This was added by commit
c37858d333a50815c74349396e31a535f4128e0b on Nov5.

and a patch to correct that has been submitted recently :
http://patchwork.ozlabs.org/linuxppc/patch?id=8848

    Sylvain

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