[PATCH] pci/msi: Use #ifdefs instead of weak functions

[Jesse Barnes]

On Sunday, January 18, 2009 4:31 pm Michael Ellerman wrote:
> Weak functions aren't all they're cracked up to be. They lead to
> incorrect binaries with some toolchains, they require us to have empty
> functions we otherwise wouldn't, and the unused code is not elided
> (as of gcc 4.3.2 anyway).
>
> So replace the weak MSI arch hooks with the #define foo foo idiom. We no
> longer need empty versions of arch_setup/teardown_msi_irq().
>
> This is less source (by 1 line!), and results in smaller binaries too:
>
>    text	   data	    bss	    dec	    hex	filename
> 9354300	1693916	 678424	11726640 b2ef30	build/powerpc/vmlinux-before
> 9354052	1693852	 678424	11726328 b2edf8	build/powerpc/vmlinux-after
>
> Also smaller on x86_64 and arm (iop13xx).
>
> Signed-off-by: Michael Ellerman <michael at ellerman.id.au>

Applied to my linux-next branch, thanks Michael.


-- 
Jesse Barnes, Intel Open Source Technology Center