From mboxrd@z Thu Jan 1 00:00:00 1970 From: greg@kroah.com (Greg KH) Date: Mon, 1 May 2017 18:03:25 -0700 Subject: Kernel version for new drivers In-Reply-To: References: Message-ID: <20170502010325.GA6311@kroah.com> To: kernelnewbies@lists.kernelnewbies.org List-Id: kernelnewbies.lists.kernelnewbies.org On Tue, May 02, 2017 at 09:05:18AM +1000, Dushara Jayasinghe wrote: > Hi all, > > Not sure if this has been covered elsewhere. I'm working on a sama5d2 > based device where the kernel supported by the hardware vendor is 4.4. > Any drivers we develop and test are based on this version of the kernel. > Do the kernel maintainers accept drivers for older (but maintained) > versions of the kernel? Nope, for the simple reason that we can't go back in time and add them to old releases :) > Is there some general policy regarding this or is it a question that I > need to ask the maintainer of the subsystem that the driver belongs > to? Have you read the stable_kernel_rules.txt file in the Documentation directory for what type of patch is allowed in the stable kernel releases? It should answer this question. Also look at the development_process/ "book" in the tree, that should help out. In short, you always have to add new features to the latest development verison of the kernel. hope this helps, greg k-h