Hi!

Am Samstag, den 07.03.2009, 19:19 -0500 schrieb Andy Walls:
> On Sat, 2009-03-07 at 19:06 -0500, Andy Walls wrote:
> > On Sat, 2009-03-07 at 18:26 -0500, Devin Heitmueller wrote:
> > > On Sat, Mar 7, 2009 at 5:45 PM, Douglas Schilling Landgraf
> > > <dougsl...@gmail.com> wrote:
> > > > Hi Mauro,
> > > >
> > > >    Please pull from: http://linuxtv.org/hg/~dougsland/v4l-dvb for the
> > > > following:
> > > >
> > > >    - v4l2-apps/util: Add rewrite_eeprom tool
> > > >                            Modules this script is known to work with:
> > > > em28xx and saa7134
> > > >
> > > > Thanks,
> > > > Douglas
> > > > --

> > > 
> > > Wow, this script really scares the crap out of me.
> > 
> > Actually it appears to be a meta-script.  It builds a script of i2c-set
> > commands to reload an eeprom.  You then have an opportunity to review
> > the script to reload the EEPROM and then run it.
> > 
> > You first have to load the gun, then pull the trigger an shoot yourself
> > in the foot. :)
> > 
> > 
> > >   Is this something
> > > we *really* need?
> > 
> > No.  IMO, factory provisionsing is the purview of the manufacturer.
> > Does someone actually have evidence of the Windows drivers reloading the
> > eeproms on these devices if it is, in fact, true that:
> > 
> > "the eeprom may be erased, due to a bug on a *few eeprom* chipsets that
> > sometimes considers i2c messages to other devices as being for it"
> > 
> > 
> > But I don't have trashed eeprom sitting in front of me, and I don't have
> > to build 256 i2cset commands by hand. :)
> 
> Another solution, that may be more complicated for the developer, but
> simpler for the end user, is a module parameter to select a compiled in
> "eeprom" image if the user knows what device he has, but the EEPROM is
> trashed.
> 
> A similar option would be to use the kernel firmware loading facility to
> load in an "eeprom firmware image" for various devices to use in the
> driver, if the eeprom is trashed.
> 
> Neither of those would write the new eeprom data, and hence neither
> would help the dual-boot Linux/Windows user.
> 
> Regards,
> Andy
> 

Just receiving this one.

Yes, that is the major problem in worst case.

Cheers,
Hermann


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