I can confirm that the floppy driver appears to be buggered.
Magic-SysRq-P gives the addresses c01de330 and c010ba2b, which are in
__delay and __global_cli, respectively.
c01de32c T __delay
c01de334 T __udelay
0xc01de32c <__delay>: movl 0x4(%esp,1),%eax
0xc01de330 <__delay+4>: decl %eax
0xc01de331 <__delay+5>: jns 0xc01de330 <__delay+4>
0xc01de333 <__delay+7>: ret
c010b958 T __global_cli
c010ba94 T __global_sti
0xc010ba1e <__global_cli+198>: call 0xc010b864 <show>
0xc010ba23 <__global_cli+203>: addl $0x8,%esp
0xc010ba26 <__global_cli+206>: sti
0xc010ba27 <__global_cli+207>: pushl %eax
0xc010ba28 <__global_cli+208>: leal 0x1(%ebx),%eax
0xc010ba2b <__global_cli+211>: pushl %eax
0xc010ba2c <__global_cli+212>: call 0xc01de334 <__udelay>
---- ---- ----
David Woodhouse, Robinson College, CB3 9AN, England. (+44) 0976 658355
Dave@imladris.demon.co.uk http://www.imladris.demon.co.uk
finger pgp@dwmw2.robinson.cam.ac.uk for PGP key.
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