Boot Hang - mmotm 090716 - serial 8250 irq flags support

[Lee Schermerhorn]

The mmotm dated 17jul09 atop 2.6.31-rc3 hangs [or appears to--could have
just lost remote access via virtual serial port] during boot on HP
Proliant DL585 [and perhaps others].  Checking back, the last mmotm to
boot successfully on this platform was the 25jun09 snapshot.

The offending patch appears to be commit
0b8d7a6fbba81ffd06de701fa6178916ee9732c3 - "serial-add-irqflags-support"
in the linux-next mega-patch.  Reverting the changes to the 8250 driver
allows the kernel to boot and operate normally.

Regards,
Lee





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