SDIO probe: Error -84

Dan Williams dcbw at
Tue Nov 4 13:26:05 EST 2008

On Tue, 2008-11-04 at 10:52 -0700, Simon Twogood wrote:
> Hello all, when inserting my Wi2Wi, libertas 8686 based, SDIO card I  
> more often than not get the message:
>    libertas_sdio: Libertas SDIO driver
>    libertas_sdio: Copyright Pierre Ossman
>    firmware: requesting sd8686_helper.bin
>    libertas: failed to load helper firmware
>    libertas_sdio: probe of mmc0:0001:1 failed with error -84
> I'm using Linux on an Atmel AT91SAM9263, and I have had  
> success with this card once or twice already, but this error comes up  
> almost always. I have not been able to determine what error -84 means,  
> can anyone tell me? I do have the binary firmware and helper inside  
> of /lib/firmware.

Could you enable detailed debugging of the SDIO communication?

insmod libertas.ko libertas_debug=0x5063a7
insmod libertas_sdio.ko

Then plug the card in and report what you get.  What firmware version is


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