On Tue, Dec 12, 2017 at 11:14:36AM +0100, Arnd Bergmann wrote:
> > 1 drivers/firmware/efi/esrt.c:445:2: error: implicit declaration of function 'memunmap' [-Werror=implicit-function-declaration]
>
> Backporting commit 89c5a2d34bda ("efi/esrt: Use memunmap() instead of kfree() to
> free the remapping") depends on commit
>
> f58a37b2e01f ("efi/esrt: Use memremap not ioremap to access ESRT table
> in memory")
>
> which was also merged into linux-4.9. To backport those to into
> kernels earlier than v4.3,
> you'd also need commit 92281dee825f ("arch: introduce memremap()"),
> which is probably
> too invasive to backport.
I've now fixed this issue, will look at the other one now, thanks.
greg k-h