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SubjectRe: [PATCH 11/19] 8250: Fix tcsetattr to avoid ioctl(TIOCMIWAIT) hang
> Lawrence, any ideas?  If not, I'm going to have to revert this patch
> from the tree.

Peering into the waitqueues like that isn't going to work.

I'd suggest simply keeping a proper count (locked) of the number of
people sitting in TIOCMIWAIT, and probably do it in serial_core (because
the bug doesn't look 8250 specific)

Alan


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