Re: [PATCH] s390: fix build failure

[Dan Williams]

On Mon, Dec 21, 2015 at 10:40 PM, Sudip Mukherjee
<sudipm.mukherjee@xxxxxxxxx> wrote:
> s390 defconfig fails with the error:
> ERROR: "phys_to_pfn_t" [drivers/s390/block/dcssblk.ko] undefined!
>
> We need CONFIG_HAS_IOMEM for phys_to_pfn_t() and for that we need to
> have CONFIG_PCI.
>
> Fixes: bfac97e7b361 ("mm, dax, pmem: introduce pfn_t")
> Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Sudip Mukherjee <sudip@xxxxxxxxxxxxxxx>
> ---

Hi, I fixed this build breakage in v4 of the patch series that
introduces phys_to_pfn_t() [1].  Chnaging the config is not correct
the HAS_IOMEM dependency for the symbol needs to be satisfied.

[1]: https://lists.01.org/pipermail/linux-nvdimm/2015-December/003610.html
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