resource: fix false warning in __request_region()

A warning is raised when __request_region() detects a conflict with a
resource whose resource.desc is IORES_DESC_DEVICE_PRIVATE_MEMORY.

But this warning is only valid for iomem_resources.
The hmem device resource uses resource.desc as the numa node id, which can
cause spurious warnings.

This warning appeared on a machine with multiple cxl memory expanders. 
One of the NUMA node id is 6, which is the same as the value of
IORES_DESC_DEVICE_PRIVATE_MEMORY.

In this environment it was just a spurious warning, but when I saw the
warning I suspected a real problem so it's better to fix it.

This change fixes this by restricting the warning to only iomem_resource.
This also adds a missing new line to the warning message.

Link: https://lkml.kernel.org/r/[email protected]
Fixes: 7dab174e2e27 ("dax/hmem: Move hmem device registration to dax_hmem.ko")
Signed-off-by: Akinobu Mita <[email protected]>
Reviewed-by: Dan Williams <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions