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

[Dominik Brodowski <linux@dominikbrodowski.net>]

On Tue, Mar 01, 2005 at 11:37:20PM +0000, Russell King wrote:
> 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.

For the time being:

{
	client_handle_t handle = ...
	struct device *dev;

	dev = &handle_to_dev(handle);
}


	Dominik