Messages in this thread | | | Date | Tue, 13 Jun 2006 13:26:55 -0300 | From | "Luiz Fernando N. Capitulino" <> | Subject | Re: pl2303 ttyUSB0: pl2303_open - failed submitting interrupt urb, error -28 |
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On Tue, 13 Jun 2006 13:46:06 +0200 Frank Gevaerts <frank.gevaerts@fks.be> wrote:
| On Mon, Jun 12, 2006 at 07:21:26PM -0400, Mark Lord wrote: | > Mark Lord wrote: | > >Greg KH wrote: | > >>So we should have finally covered both of them now. | > > | > >Yes, agreed. | > > | > >So if modify pl2303_open() to have it simulate -ENOMEM from | > >usb_submit_urb(), | > >then this should not crash the entire USB subsystem. Right? | > > | > >Ditto if it happens due to low-memory, rather than me hacking the code | > >to test it? | > | > Mmmm.. looks like it's still buggy, but we manage to avoid the bug | > under *most* circumstances. Which is good! | > | > But the bug will still need to be fixed. A failure from usb_submit_urb() | > should not require a reboot to recover. | > Here's the results of a simulated -ENOMEM test: | > | > kernel BUG at kernel/workqueue.c:110! | | We had the exact same error here with ipaq.ko. Our problems only went | away once we applied the following (the first part might already be | applied).
Interesting, I couldn't reproduce this with ftdio_sio.
(and unfortunatally I'm w/o my pl2303 device).
-- Luiz Fernando N. Capitulino - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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