------------[ cut here ]------------
WARNING: at net/sched/sch_generic.c:226 dev_watchdog+0x1c4/0x2dc()
NETDEV WATCHDOG: eth0 (dm9000): transmit timed out
Modules linked in:
[<c002cd50>] (dump_stack+0x0/0x14) from [<c003b104>] (warn_slowpath+0x5c/0x78)
[<c003b0a8>] (warn_slowpath+0x0/0x78) from [<c01e3608>] (dev_watchdog+0x1c4/0x2dc)
r3:c6c2f800 r2:c02e6b80
r6:00000001 r5:c6c2f800 r4:00000001
[<c01e3444>] (dev_watchdog+0x0/0x2dc) from [<c0045ba0>] (run_timer_softirq+0x198/0x22c)
r8:c0307e98 r7:c01e3444 r6:00000103 r5:c032bdc0 r4:c0306000
[<c0045a08>] (run_timer_softirq+0x0/0x22c) from [<c0040260>] (__do_softirq+0x68/0x10c)
[<c00401f8>] (__do_softirq+0x0/0x10c) from [<c0040580>] (irq_exit+0x4c/0x9c)
[<c0040534>] (irq_exit+0x0/0x9c) from [<c002806c>] (asm_do_IRQ+0x6c/0x84)
r4:00000020
[<c0028000>] (asm_do_IRQ+0x0/0x84) from [<c0028a28>] (__irq_svc+0x48/0x88)
Exception stack(0xc0307f40 to 0xc0307f88)
7f40: 00000000 0005317f 0005217f 60000013 c0306000 c0029f3c c0309fa0 c0309d30
7f60: 800210ec 41069265 800210b8 c0307f94 600000d3 c0307f88 c0029f80 c0029f8c
7f80: 60000013 ffffffff
r6:c0309fa0 r5:fec48000 r4:ffffffff
[<c0029f3c>] (default_idle+0x0/0x58) from [<c0029ff4>] (cpu_idle+0x60/0xa8)
[<c0029f94>] (cpu_idle+0x0/0xa8) from [<c02553b0>] (rest_init+0x74/0x88)
r6:c0022f00 r5:c0326148 r4:c0306000
[<c025533c>] (rest_init+0x0/0x88) from [<c0008980>] (start_kernel+0x2c0/0x32c)
r4:c032e77c
[<c00086c0>] (start_kernel+0x0/0x32c) from [<80008034>] (0x80008034)
r5:c032660c r4:00053175
---[ end trace f07d5504355e76da ]---

解决了吗，我也碰到这个问题

------------[ cut here ]------------
WARNING: at net/sched/sch_generic.c:226 dev_watchdog+0x13c/0x228()
NETDEV WATCHDOG: eth0 (dm9000): transmit timed out
Modules linked in:
[<c002e948>] (unwind_backtrace+0x0/0xdc) from [<c0040264>] (warn_slowpath_common+0x4c/0x80)
[<c0040264>] (warn_slowpath_common+0x4c/0x80) from [<c00402d4>] (warn_slowpath_fmt+0x28/0x38)
[<c00402d4>] (warn_slowpath_fmt+0x28/0x38) from [<c01c75c8>] (dev_watchdog+0x13c/0x228)
[<c01c75c8>] (dev_watchdog+0x13c/0x228) from [<c00490f8>] (run_timer_softirq+0x160/0x1f4)
[<c00490f8>] (run_timer_softirq+0x160/0x1f4) from [<c0044ce4>] (__do_softirq+0x68/0xf0)
[<c0044ce4>] (__do_softirq+0x68/0xf0) from [<c0028060>] (_text+0x60/0x78)
[<c0028060>] (_text+0x60/0x78) from [<c0028a14>] (__irq_svc+0x34/0x60)
Exception stack(0xc02e1f70 to 0xc02e1fb8)
1f60:                                     00000000 0005317f 0005217f 60000013
1f80: c002a2b4 c02e0000 c02e3e14 c002a2b4 c0305988 41069265 2002108c 00000000
1fa0: 600000d3 c02e1fb8 c002a2f4 c002a300 60000013 ffffffff
[<c0028a14>] (__irq_svc+0x34/0x60) from [<c002a2f4>] (default_idle+0x40/0x58)
[<c002a2f4>] (default_idle+0x40/0x58) from [<c002a288>] (cpu_idle+0x44/0x70)
[<c002a288>] (cpu_idle+0x44/0x70) from [<c0008ab0>] (start_kernel+0x248/0x2a4)
[<c0008ab0>] (start_kernel+0x248/0x2a4) from [<20008034>] (0x20008034)
---[ end trace c8bc31d60ded5e92 ]---
rpcbind: server 192.168.0.105 not responding, timed out
Root-NFS: Unable to get nfsd port number from server, using default
Looking up port of RPC 100005/1 on 192.168.0.105
rpcbind: server 192.168.0.105 not responding, timed out
Root-NFS: Unable to get mountd port number from server, using default
Root-NFS: Server returned error -5 while mounting /home/nfs4arm/rootfs
VFS: Unable to mount root fs via NFS, trying floppy.
VFS: Cannot open root device "nfs" or unknown-block(2,0)

我也遇到这个问题，怎么没人回答呀？

恩，我也遇到了，可惜没有解决

没有啊！我感觉是DM9000的驱动移植的有问题啊

到底这个问题解决没有啊，楼主出来说一下啊

请问楼上的朋友们都解决了吗？我也碰到这样的问题

这个问题没人解决吗？

解决的同学能把解决方法贴出来么

同，这个问题guang官方没一个说法么？