嵌入式linux移植8686wifi模块后，应用程序发生数据出现以下问题。求大牛们帮帮！谢谢！！！
libertas: problem fetching packet from firmware
------------[ cut here ]------------
WARNING: at net/sched/sch_generic.c:226 dev_watchdog+0x14c/0x23c()
NETDEV WATCHDOG: eth1 (libertas_sdio): transmit timed out
Modules linked in: libertas_sdio libertas
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Exception stack(0xc7be3fb0 to 0xc7be3ff8)
3fa0: 42a95900 00000001 03224a68 03224a68
3fc0: 00000000 03224a68 42a95460 00000000 00000203 42a94de0 00eff15c 40119000
3fe0: 402e9648 42a943e0 401049a8 40104af0 80000010 ffffffff
---[ end trace c7e94ca27915e2bc ]---
libertas: tx watch dog timeout
libertas: command 0x001f timed out
libertas: requeueing command 0x001f due to timeout (#1)
libertas: command 0x001f timed out
libertas: requeueing command 0x001f due to timeout (#2)
libertas: command 0x001f timed out
libertas: requeueing command 0x001f due to timeout (#3)
