Hi,
Testing mwifiex_sdio on XO-4 (8787) on Linux 3.8. In OLPC's use case
we quite regularly will power down the wireless card when it is not
being actively used. This is currently proving problematic.
Here is a test case reproducing one of the failures we are seeing:
First, run this script:
insmod mwifiex_sdio.ko
sleep 1
ifconfig eth0 up
iwlist eth0 scan &
sleep 0.5
rmmod mwifiex_sdio
It normally runs fine the first time, no errors, but run it again and
it terminates with these errors:
mwifiex_sdio mmc0:0001:1: rx_pending=0, tx_pending=0, cmd_pending=-1
eth0 Failed to read scan data : No such device
>From this point, things are pretty screwed up. Try to load the driver again...
insmod mwifiex_sdio.ko
mwifiex_sdio mmc0:0001:1: WLAN FW already running! Skip FW dnld
mwifiex_sdio mmc0:0001:1: WLAN FW is active
mwifiex_sdio mmc0:0001:1: mwifiex_cmd_timeout_func: Timeout cmd id
(331.391420) = 0xa9, act = 0x0
mwifiex_sdio mmc0:0001:1: num_data_h2c_failure = 0
mwifiex_sdio mmc0:0001:1: num_cmd_h2c_failure = 0
mwifiex_sdio mmc0:0001:1: num_cmd_timeout = 1
mwifiex_sdio mmc0:0001:1: num_tx_timeout = 0
mwifiex_sdio mmc0:0001:1: last_cmd_index = 1
mwifiex_sdio mmc0:0001:1: last_cmd_id: 00 00 a9 00 00 00 00 00 00 00
mwifiex_sdio mmc0:0001:1: last_cmd_act: 00 00 00 00 00 00 00 00 00 00
mwifiex_sdio mmc0:0001:1: last_cmd_resp_index = 0
mwifiex_sdio mmc0:0001:1: last_cmd_resp_id: 00 00 00 00 00 00 00 00 00 00
mwifiex_sdio mmc0:0001:1: last_event_index = 0
mwifiex_sdio mmc0:0001:1: last_event: 00 00 00 00 00 00 00 00 00 00
mwifiex_sdio mmc0:0001:1: data_sent=1 cmd_sent=1
mwifiex_sdio mmc0:0001:1: ps_mode=0 ps_state=0
mwifiex_sdio mmc0:0001:1: cmd timeout
mwifiex_sdio: Resetting card...
WARNING: driver mwifiex_sdio did not remove its interrupt handler!
mmc0: card 0001 removed
and it doesn't come back.
Let me know how we can help further debugging.
Thanks
Daniel
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