Messages in this thread | | | Date | Wed, 5 Aug 2009 09:49:19 -0700 | From | Greg KH <> | Subject | Re: [PATCH 1/2] chrdev: implement __[un]register_chrdev() |
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On Thu, Aug 06, 2009 at 01:30:30AM +0900, Tejun Heo wrote: > Greg KH wrote: > > On Wed, Aug 05, 2009 at 03:35:42PM +0900, Tejun Heo wrote: > >> [un]register_chrdev() assume minor range 0-255. This patch adds __ > >> prefixed versions which take @minorbase and @count explicitly. > > > > What's the difference between this and the existing > > register_chrdev_region() function? Why doesn't that work for you? > > > > What am I missing here? > > The function names in char_dev.c are quite confusing.
That's an understatement :)
> register_chrdev_region() only registers chrdev region. > register_chrdev() registers chrdev region and creates a cdev for the > region. :-)
Yes, but you can use register_chrdev_region() and then call cdev_alloc() for the specific cdevs you need, right? It's not the prettiest, but it should work.
thanks,
greg k-h
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