Re: [PATCH 00/11] Sort out sdio_uart - stage two

From: Alan Cox
Date: Tue Nov 03 2009 - 19:52:58 EST

> >From what I can see, sdio_uart_open() and sdio_uart_activate() are
> called on the first cat invocation, and then sdio_uart_close() and
> sdio_uart_shutdown() when cat is stopped with ^C. However neither

I would have expected the cat to terminate when the port is unplugged
(and the uart remove method called - doing a hangup)

> sdio_uart_open() nor sdio_uart_activate() is ever called anymore with
> any subsequent cat invocations until a reboot. Some upper layer must
> have taken upon itself to return -EIO to user space.

The first call into the driver is to sdio_uart_install which looks up the
port from tty->index and would blow up if for some reason the get method

Still digging.
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