sdio 8686 firmware load problem.

[Jonathan Cameron]

> Jonathan Cameron wrote:
>> V8 and V9 firmware's from git repository are both giving the following debug.
>>
>> libertas enter: lbs_init_module()
>> libertas leave: lbs_init_module()
>> libertas enter: if_sdio_init_module()
>> libertas_sdio: Libertas SDIO driver
>> libertas_sdio: Copyright Pierre Ossman
>> libertas enter: if_sdio_probe()
>> libertas sdio: class = 0x7, vendor = 0x2DF, device = 0x9103, model = 0xB, ioport = 0x10000
>> libertas enter: if_sdio_prog_firmware()
>> libertas sdio: firmware status = 0x0
>> into sdio firmware load
>> libertas enter: if_sdio_prog_helper()
>> libertas_sdio mmc0:0001:1: firmware: requesting sd8686_helper.bin
>> libertas sdio: waiting for helper to boot...
>> libertas leave: if_sdio_prog_helper(), ret 0
>> libertas enter: if_sdio_prog_real()
>> libertas_sdio mmc0:0001:1: firmware: requesting sd8686.bin
>> libertas sdio: firmware wants 16 bytes
>> libertas sdio: firmware wants 17 bytes
>> libertas sdio: firmware helper signalled error
>> libertas: failed to load firmware
>> libertas leave: if_sdio_prog_real(), ret -5
>> libertas leave: if_sdio_prog_firmware(), ret -5
>> libertas leave: if_sdio_probe(), ret -5
>> libertas_sdio: probe of mmc0:0001:1 failed with error -5
>> libertas leave: if_sdio_init_module(), ret 0
>>
>> This was previously working with this board and the same kernel setup
>> prior to switching from a scratch built filesystem etc to using openembedded.
>>
>> Anyone have any suggestions on what might be happening?
>>
>> Thanks,
>>
>> Jonathan
> Forgot to mention this is with 2.6.31-rc5
Ok, bit more info.

Uncommenting out the line in the helper firmware load that makes it log
how much data is being sent makes everything work.

Looks like something racy is going on. Will poke further.

For more info, this on a pxa271 board. The only non libertas change
recently that might effect it was a fix to the pxamci dma code, will try
reverting that.

Jonathan