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Re: [ts-7000] Re: Greg Kroah-Hartman's response to SD-flash close source

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Subject: Re: [ts-7000] Re: Greg Kroah-Hartman's response to SD-flash close source driver solution:
From: Curtis Monroe <>
Date: Wed, 21 Mar 2007 23:32:17 -0400
On March 21, 2007 01:29 pm, Jesse Off wrote:
> > > In other words...Can embedded linux developers hide their close 
> source 
> > divers 
> > > in a custom close source BIOS, that is called from an open 
> source "wrapper 
> > > module"?
> > 
> > No.
> 
> I disagree.  Inevitably what it would come down to is that somebody 
> would have to be able to convince a judge somewhere that the closed 
> source BIOS is a derived work of the GPL'ed kernel.  That would be 
> quite a stretch if the "BIOS" uses no GPL'ed functions or header 
> files and can compile and be useful without Linux or an OS at all.
> 
> I believe Linux has an NDIS wrapper driver to allow closed source 
> Windows network drivers to be used with Linux on the PC.  Does this 
> mean that these Windows drivers must now be made GPL?  This is really 
> the same thing.  
> 

Since close source drivers violate the Linux GPL, distros like Red Hat force 
users to download and install the drivers separately. So technically the user 
is the the one violating the GPL not Red Hat Inc.

The other solution is the binary BLOB where a closed source device driver is 
converted to an unreadable and uneditable open source blob and linked to the 
kernel. Technically its "open source". The legality of blobs is in question 
too.


> > 
> > > PCs have close source BIOSes. 
> > 
> > Some do, some do not.
> 
> True, 99.9% do, .1% do not.  Seriously, this seems a ridiculous 
> statement-- what brand PC currently ships with an open-source BIOS?
> 
> > 
> > > My problem is the SD flash card interface is patented and its 
> governing body 
> > > doesn't allow release of open source drivers for the SD 
> interface. 
> > 
> > That's not true, we have SD drivers in the Linux kernel now.
> 
> They are probably MMC drivers, not full SD.  SD cards are backward 
> compatible with MMC.  Either that or they were developed illegally or 
> reverse engineered in a country that allows that.  SD association 
> licenses are pretty clear.  You might be able to get away with it if 
> you don't use the word "SD" in any marketing, advertising, or 
> documentation for your product but that seems a dishonest way to do 
> business.
> 
> //Jesse Off
> 
> 


 
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