sim710_device_remove seems buggy

[Matthew Wilcox <matthew@wil.cx>]

Hi Richard,

I was looking for inspiration in sim710 when I found what appears to me
to be a bug.  Your implementation of sim710_device_remove does:

sim710_device_remove(struct device *dev)
{
        struct Scsi_Host *host = dev_to_shost(dev);

Now, this is going to be called with the struct device corresponding to
either the MCA or EISA device which is the *parent* of the shost.
dev_to_shost only looks upwards in the tree, so it will never find the
shost.

Unfortunately, I don't have a good idea about how to solve this.  The
least lame perhaps is to have separate routines for EISA and MCA
devices, each of which passes the shost to this routine.

-- 
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours.  We can't possibly take such
a retrograde step."