OF: Can't handle multiple dma-ranges with different offsets

[Chris Packham]

Hi,

I've just fired up linux kernel v5.7 on a p2040 based system and I'm 
getting the following new warning

OF: Can't handle multiple dma-ranges with different offsets on 
node(/pcie@ffe202000)
OF: Can't handle multiple dma-ranges with different offsets on 
node(/pcie@ffe202000)

The warning itself was added in commit 9d55bebd9816 ("of/address: 
Support multiple 'dma-ranges' entries") but I gather it's pointing out 
something about the dts. My boards dts is based heavily on p2041rdb.dts 
and the relevant pci2 section is identical (reproduced below for reference).

 ÂÂÂ pci2: pcie@ffe202000 {
 ÂÂÂ ÂÂÂ reg = <0xf 0xfe202000 0 0x1000>;
 ÂÂÂ ÂÂÂ ranges = <0x02000000 0 0xe0000000 0xc 0x40000000 0 0x20000000
 ÂÂÂ ÂÂÂ ÂÂÂ Â 0x01000000 0 0x00000000 0xf 0xf8020000 0 0x00010000>;
 ÂÂÂ ÂÂÂ pcie@0 {
 ÂÂÂ ÂÂÂ ÂÂÂ ranges = <0x02000000 0 0xe0000000
 ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ Â 0x02000000 0 0xe0000000
 ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ Â 0 0x20000000

 ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ Â 0x01000000 0 0x00000000
 ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ Â 0x01000000 0 0x00000000
 ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ Â 0 0x00010000>;
 ÂÂÂ ÂÂÂ };
 ÂÂÂ };

I haven't noticed any ill effect (aside from the scary message). I'm not 
sure if there's something missing in the dts or in the code that checks 
the ranges. Any guidance would be appreciated.

Thanks,
Chris