brcmfmac.ko is undefined when executing make

[Urb1101]

in Raspberrypi 4B, I executed make in patches/bcm43455c0/7_45_234_4ca95bb_CY/nexmon.
but got error:
BUILDING DRIVER for kernel 5.10 brcmfmac_5.10.y-nexmon/brcmfmac.ko (details: log/driver.log)
ERROR: modpost: "brcmf_dmi_probe" [～/nexmon/patches/driver/brcmfmac_5.10.y-nexmon/brcmfmac.ko] undefined!

kernel version:5.10.71-v8+
is there a way to solve this?

[jlinktu]

Probably similar to #600 ; try the solution proposed there.

[Urb1101]

rpi-source dosent work? in #600 Its recommanded to use manual download but I used rpi-source to download kernel header.

[Urb1101]

I tried #600 solution but it also didnt worked, is there other way to solve?