H. Peter Anvin [EMAIL PROTECTED] wrote:
> [EMAIL PROTECTED] wrote:
>>>
>>> tty = driver->ops->get_tty(driver, inode [, other_stuff?]);
>> Can the inode be used to identify the driver too ? (but inode to driver
>> mapping is not trivial atm).
>
> It can, but it's an O(n) operation in the number of registered drivers.
> However, we can only call the above if we know the driver in the first
> place so such a lookup is rather pointless.
Yes, we know the driver, but do we need to pass it into ->get_tty() ?
Passing it in (or having the operation compute from inode) has advantage
of allowing drivers to share code if necessary.
common_get_tty(driver, inode)
{
if (is_ptmx_driver(driver))
something;
else // pts driver
something_else;
}
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