Re: [PATCH 00/11] Sort out sdio_uart - stage two
From: Nicolas Pitre
Date: Tue Nov 03 2009 - 14:58:17 EST
On Tue, 3 Nov 2009, Alan Cox wrote:
> With the bugs Nicolas reported hopefully now nailed.
Progress, but still not there yet.
I'm still using the same "cat /dev/ttySDIO0" test with a GPS card.
Yanking the card out does terminate the cat process properly. Inserting
the card back in and restarting cat always fails with:
cat: /dev/ttySDIO0: Input/output error
The same thing occurs if I terminate cat with ^C instead of pulling the
>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
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.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/