Re: [PATCH 0/6] drivers/dma: drop modular code from non modular drivers

[Arnd Bergmann]

On Wednesday 09 December 2015 18:21:56 Paul Gortmaker wrote:
> This series of commits is a slice of a larger project to ensure
> people don't have dead code for module removal in non-modular
> drivers.  Overall there is roughly 5k lines of dead code in the
> kernel due to this.
> 
> There is a quasi-separate theme, in that some of the drivers were
> allowing an unbind implicitly since it is enabled by default.  But
> for core DMA infrastructure drivers, this doesn't seem useful -- so
> we also disable that here which allows us to delete any ".remove"
> functions from the drivers that would otherwise be called during the
> (impossible to trigger) module removal.
> 
> Since ARM covers these files the best of all architectures, each
> file was build tested for allmodconfig on ARM, which at the same
> time confirms that the files are not built with "CC [M]" -- hence
> genuinely non-modular.
> 
> My testing and the larger patch series in general has been done
> against the latest linux-next tree.
> 
> 

We are in the process of changing the DMA drivers to a new way of
passing the "filter" function around. We can soon build them
all as loadable modules again.

	Arnd
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