Re: [linux-usb-devel] possible USB regression with 2.6.21-rc4: iPod doesn't work

[Adrian Bunk <bunk@stusta.de>]

On Thu, Mar 22, 2007 at 10:46:53PM +0100, Tino Keitel wrote:
> On Thu, Mar 22, 2007 at 14:29:11 -0700, David Brownell wrote:
> > On Thursday 22 March 2007 12:54 pm, Tino Keitel wrote:
> > > On Thu, Mar 22, 2007 at 15:40:40 -0400, Alan Stern wrote:
> > > > 	  _Something_ is generating those overcurrent 
> > > > warnings, and it sure looks like a hardware malfunction.
> > > 
> > > But it works with 2.6.20.
> > 
> > So can you bisect to find what caused the problem?
> 
> I never did use git-bisect, but maybe I find the time next week.


Instructions for bisecting:


<--  snip  -->

# install git and cogito on your computer

# clone Linus' tree:
cg-clone \ 
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

# start bisecting:
cd linux-2.6
git bisect start
git bisect bad v2.6.21-rc4
git bisect good v2.6.20

# start round
cp /path/to/.config .
make oldconfig
make
# install kernel, check whether it's good or bad, then:
git bisect [bad|good]
# start next round


After at about 12 reboots, you'll have found the guilty commit
("...  is first bad commit").


More information on git bisecting:
  man git-bisect

<--  snip  -->


> Regards,
> Tino

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