From: Larry Finger <larry.finger@lwfinger.net>
Date: Tue, 07 Aug 2007 02:53:41 GMT
Subject: Re: Problem with bisect
Message-ID: <46B7DEB5.4060402@lwfinger.net>
In-Reply-To: <200708070350.50419.chriscool@tuxfamily.org>

Christian Couder wrote:
> 
> You use "git bisect good v2.6.22", but this is not true because the 
> tag "v2.6.22" is on the mainstream kernel branch and the driver is not 
> there.
> 
> If the v2.6.22 kernel that used to work came directly from John Linville's 
> wireless-dev git tree, not from a patch, then you should find the exact 
> commit in John Linville's tree that worked and say "git bisect good <this 
> commit>".
> 
> But if the driver that worked with a mainstream v2.6.22 kernel had been 
> patched, and now doesn't work when the same patch is applied to mainstream 
> v2.6.23-rc1 kernel, then you can perhaps use:
> 
> git bisect start
> git bisect bad v2.6.23-rc1
> git bisect good v2.6.22
> 
> and then:
> 
> 1) patch the kernel with the driver patch,
> 2) test the patched kernel,
> 3) remove the patch,
> 4) say "git bisect good" or "git bisect bad"
> 5) go to step 1) until the commit that broke the driver is found

Has the ability to use a commit hash to indicate a start point been in git for a long time? I think 
I remember trying it before when a version tag had not been downloaded and having a failure.

Larry