Re: kernel BUG at drivers/serial/8250.c:1256!

[Russell King]

On Wed, Mar 02, 2005 at 12:09:46AM +0100, Karol Kozimor wrote:
> I've finally got around to test latest kernels and managed to find a bug in 
> the serial subsystem, which happens during suspend.

Yes, serial_cs is claiming that we don't have a device associated with
the port, so we're treating it as a legacy port.  However, serial_cs is
implementing the suspend/resume methods.  This is wrong, since that
means the port will be suspended twice, and hence causes this bug.

serial_cs needs to register the ports along with the PCMCIA device with
which the port belongs to.  This will stop it being treated as a legacy
serial port.

Unfortunately, it's too late tonight for me to dig into PCMCIA to work
out how we get at the device structure - I can't find any examples off
hand either.  Therefore, it may be a while before I can produce a patch
to resolve this.

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:  2.6 Serial core
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