Re: Add a "enable" sysfs attribute to the pci devices to allow userspace (Xorg) to enable devices without doing foul direct access

[Pavel Machek]

Hi!

> >It has everything to do with the 'enable' file. The 
> >'enable' file lets
> >you change the state of the hardware without an 
> >ownership mechanism.
> >Other device users will not be notified of the state 
> >change. Since the
> >other users can't be sure of the state of the hardware 
> >when they are
> >activated, they will have to reload their state into 
> >the hardware on
> >every activation.
> 
> you seem to miss the fact that this can be done now 
> without the enable
> flag, setpci can be used to disable the BARs, again the 
> enable flag
> doesn't change that....

...well, when you launch setpci, you are firmly in 'unsupported' land.
While 'enable' sounds like something where users expect it to be
supported.



-- 
Thanks for all the (sleeping) penguins.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/