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<DIV><FONT size=2>I use a netgear MA401 802.11b card, and redhat linux (2.4.26).
if I plug the card before system boot or after system boot plug the card at the
first time, the card work perfectly, but after system boot, the card is taken
out and then plug back, it will not work again. </FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>the output of dmesg is:</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>when card is removed:</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>hostap_cs: CS_EVENT_CARD_REMOVAL<BR>wifi0: card already
removed or not configured during shutdown<BR>wifi0: Interrupt, but dev not
OK<BR>wifi0: card already removed or not configured during shutdown<BR>Unable to
handle kernel NULL pointer dereference at virtual address
00000074<BR> printing eip:<BR>d091bc97<BR>*pde = 00000000<BR>Oops:
0000<BR>CPU: 0<BR>EIP:
0010:[<d091bc97>] Not tainted<BR>EFLAGS:
00010286<BR>eax: 0000000a ebx: ce6facc0 ecx:
ce73f040 edx: 00000000<BR>esi: 00000070 edi:
ce9bd23c ebp: ce602e78 esp: cdfc9c80<BR>ds:
0018 es: 0018 ss: 0018<BR>Process cardmgr (pid: 3563,
stackpage=cdfc9000)<BR>Stack: ce9bd23c ce73f660 00000003 ce7b3680 d0922ae0
00000000 d091d642 ce9bd000 <BR> cd8fac40
d081c35e ce6fac20 cfee48aa cdfc9cee d08f595a ce7b3680 00000000
<BR> 4050643f 00000050 ce602e40 d08f6142
00000000 cdfc9ce4 00000050 00000000 <BR>Call Trace:
[<d0922ae0>] [<d091d642>] [<d081c35e>] [<d08f595a>]
[<d08f6142>]<BR> [<d0822212>] [<d080dc04>]
[<d080e5ab>] [<d080dc04>] [<d0821bfb>]
[<d080e5ab>]<BR> [<d0821bfb>] [<d080df45>]
[<d08222b5>] [<d080e9dc>] [<c0117c6b>]
[<c0135a14>]<BR> [<c027e4e4>] [<c012b156>]
[<c012c514>] [<c012bca5>] [<c012c053>]
[<c014c399>]<BR> [<c012c0b2>] [<c010900f>]</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2>Code: 8b 42 74 48 74 0a ff 4a 74 0f 94 c0 84 c0 74 08 89 14 24
e8 </FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>when card is re-plugged:</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>No any response.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>What 's the reason? expect your warm help.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Best
Regards,<BR> <BR>---------------------------------------------------------<BR>Zhang
Yanfeng <BR></FONT></DIV></BODY></HTML>