Messages in this thread | | | Date | Fri, 12 May 2006 13:09:51 +0200 | From | Kay Sievers <> | Subject | Re: [PATCH] [PNP] 'modalias' sysfs export |
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On Tue, May 09, 2006 at 07:41:44PM +0200, Pozsar Balazs wrote:
> Basically I implemented the above things, to be precise: > - the alias for the pnp device drivers are in the form "pnp:*dXXXYYYY*" > instead of the old "pnp:dXXXYYYY*" > - the alias for the pnp card drivers are in the form > "pnp:cXXXYYYY*dXXXYYYY*dXXXYYYY*" > instead of the old > "pnp:cXXXYYYYdXXXYYYYdXXXYYYY*" > _and_ the device id part are ordered > - add a "modalias" file under sysfs for each pnp device, containing > "pnp:dXXXYYYYdXXXYYYY..." > where "dXXXYYYY" is appended for each pnp id the device has > - add a "modalias" file under sysfs for each pnp card, containing > "pnp:cXXXYYYYdXXXYYYYdXXXYYYY..." > where "cXXXYYYY" is the card_id, and the device ids are appended > after it, _ordered_. > > > With this applied, I think we are close to be able to drop > special-casing the pnp bus in udev rules.
That looks promising.
> What still needs to be done is exporting the MODALIAS env variable. > (Sorry, I do not see how it could be added elegantly.)
Yeah, we really want the environment variable. You may do the composition of the string in a separate function, that just writes to a bufferi, and use it to fill the buffer of the uevent environment and the page of the sysfs attribute. Like we did for input: http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=bd37e5a951ad2123d3f51f59c407b5242946b6ba
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