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Re: wifi breakage due to commit "wifi: brcmfmac: add support for vendor-specific firmware api"

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On 3/16/2023 8:54 AM, Michael Stapelberg wrote:
Hmm, I’m not sure either.

Actually, the check I referred to only bails out when CONFIG_MODPROBE_PATH is unset. In your case it is set but it is not existing. I dived into request_module() and it ends up scheduling a work to call the modprobe which will fail. However, brcmfmac will wait for brcmfmac-wcc to register itself so doing the insmod of brcmfmac-wcc will do the trick. However, now I am back at saying this can be racy. It would be better to come up with a modprobe.go for your user-space environment and put that in kernel config.

Regards,
Arend

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