Re: [gpio:for-next 40/43] platform.c:undefined reference to `devm_ioremap_resource'

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

On Thu, Feb 21, 2019 at 1:48 PM kbuild test robot <lkp@xxxxxxxxx> wrote:

> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git for-next
> head:   21b4ab8f9e7100286c380a13e0e46ca6bf35e692
> commit: 7945f929f1a77a1c8887a97ca07f87626858ff42 [40/43] drivers: provide devm_platform_ioremap_resource()
> config: um-x86_64_defconfig (attached as .config)
> compiler: gcc-8 (Debian 8.2.0-20) 8.2.0
> reproduce:
>         git checkout 7945f929f1a77a1c8887a97ca07f87626858ff42
>         # save the attached .config to linux build tree
>         make ARCH=um SUBARCH=x86_64
>
> All errors (new ones prefixed by >>):
>
>    /usr/bin/ld: drivers/base/platform.o: in function `devm_platform_ioremap_resource':
> >> platform.c:(.text+0xa8): undefined reference to `devm_ioremap_resource'
>    collect2: error: ld returned 1 exit status

99 times out of 100 UM linux bugs are  because something needs to depend on
HAS_IOMEM or be inside #ifdef CONFIG_HAS_IOMEM. UM doesn't have
IOMEM.

Bartosz do you see immediately where the problem is or do you
need help looking into it?

Yours,
Linus Walleij