linux-kernel - Re: Who broke cb8f488c33 patch? (was Re: [PATCH 1/1] USBHID: correct start/stop cycle)

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Date:	Thu, 13 Nov 2008 16:32:30 +0100
From:	Helge Deller <deller@....de>
To:	Jiri Slaby <jirislaby@...il.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Jiri Kosina <jkosina@...e.cz>, vda.linux@...glemail.com,
	hugh@...itas.com, torvalds@...ux-foundation.org, jer@...too.org,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Who broke cb8f488c33 patch? (was Re: [PATCH 1/1] USBHID: correct
 start/stop cycle)

Jiri Slaby wrote:
> On 11/12/2008 01:50 AM, Andrew Morton wrote:
>>>> let's fix it for good.
>>>> Signed-off-by: Denys Vlasenko <vda.linux@...glemail.com>
>>>> --- linux-2.6.28-rc4/mm/mmap.c	Mon Nov 10 01:36:15 2008
>>>> +++ linux-2.6.28-rc4.fix/mm/mmap.c	Wed Nov 12 01:21:39 2008
>>>> @@ -1704,7 +1704,7 @@
>>>>  	vma = find_vma_prev(mm, addr, &prev);
>>>>  	if (vma && (vma->vm_start <= addr))
>>>>  		return vma;
>>>> -	if (expand_stack(prev, addr))
>>>> +	if (!prev || expand_stack(prev, addr))
>>>>  		return NULL;
>>>>  	if (prev->vm_flags & VM_LOCKED) {
>>>>  		if (mlock_vma_pages_range(prev, addr, prev->vm_end) < 0)
>> It looks like this was caused by me fixing rejects.  That was the fancy
>> include-lots-of-context-so-it-wont-apply patch.
> 
> Great, this one got fixed. Helge, did you proceed with bisecting which another
> commit breaks parics while having this one applied?

I bisected twice. Both times I found this one to be the culprit.
Nevertheless, just reverting this (Thanks Denys!) didn't fixed the USB 
problem.
I'll retry another bisecting round with -rc4 now, but I have the dumb 
feeling the problem is not the USB part, but more in the usbhid driver.
Let's see.

Helge
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