Whoops! Sent it without proof-reading. I AM SORRY! Please ignore the
previous patch, here is the correct patch ...
Thanks
- Bhavesh
-- Bhavesh P. Davda E-mail : bhavesh@avaya.com Avaya Inc. Phone/Fax : (303) 538-4438 Room B3-B03, 1300 West 120th Avenue Westminster, CO 80234> -----Original Message----- > From: Bhavesh P. Davda > Sent: Tuesday, July 15, 2003 3:57 PM > To: linux-kernel@vger.kernel.org > Cc: fischer@norbit.de; dahinds@users.sourceforge.net; Marcelo Tosatti > Subject: [PATCH] AHA152x driver hangs on PCMCIA card eject, kernel > 2.4.22-pre6 > > > Juergen, David; please review this patch, and recommend that > Marcelo apply this patch if you think it is okay... Thanks! > > Attached is a patch against linux-2.4.22-pre6, to fix a hang > problem when an Adaptec SlimSCSI (PCMCIA) adapter is ejected from > a PCMCIA card reader (e.g. yenta/TI1225 based). > > The fix involves: > > 1. A change to the common aha152x driver to ignore an interrupt > in the top-half handler if it cannot read valid data from the I/O > ports (possibly due to a bad host-adapter chip or an ejected > PCMCIA card). This way, a shared interrupt handler (e.g. yenta) > can pick up the interrupt if the IRQ is really meant for it. This > is where the original hang was taking place; the aha152x bottom > half was getting into an infinite loop, though the SlimSCSI card > had been ejected, and the actual IRQ was meant for yenta. > > 2. A change to the aha152x_cs stub driver to not use the SCSI > error-handling thread code. The aha152x_cs driver calls > scsi_unregister_module() as a queued timer task when it gets a > CS_EVENT_CARD_REMOVAL event, which causes scsi_unregister_host() > to do a down() on a semaphore, calling schedule(), when executing > the timer_bh for the timer. > > Thanks! > > - Bhavesh > -- > Bhavesh P. Davda E-mail : bhavesh@avaya.com > Avaya Inc. Phone/Fax : (303) 538-4438 > Room B3-B03, 1300 West 120th Avenue > Westminster, CO 80234
- 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/
This archive was generated by hypermail 2b29 : Tue Jul 15 2003 - 22:01:00 EST