Messages in this thread | | | Date | Tue, 03 Nov 2009 20:48:13 -0500 (EST) | From | Nicolas Pitre <> | Subject | Re: [PATCH 00/11] Sort out sdio_uart - stage two |
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On Wed, 4 Nov 2009, Alan Cox wrote:
> > >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)
That works fine... the first time only. After the card is inserted back then -EIO is always returned on open() from user space, same thing as subsequent open() after ^C.
> > 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 > failed.
Well, same issue: I see it being called the first time. No calls what so ever afterward until the next reboot.
Nicolas
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