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SubjectRe: [BUG] serial base baud misdetected in 2.6.27
Alan Cox wrote:
>> like it's hanging off the PCI bus. The vendor/device matches to an Exar
>> Corp. XR17C152, which is given a base_baud of 921600 in
>> drivers/serial/8250_pci.c.
>>
>> According to the chip specs, 921600 is correct with the default crystal
>> and control register values. However, other crystals can be used and
>> there's also a control register bit to enable a prescalar which cuts the
>> baud rate by a factor of four. I suspect that one of these has been
>> done on our boards.
>
> Probably. Did your vendor have the sense to set subvendor/subdevice
> identifiers that can be used to identify that specific unit ?

No idea, but I'll look into it. Thanks for the help.

Chris


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