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27 March 2024, 02:37:15 UTC
Revision 41a5311465b9de6d18e78b733a2c6e1b33e89be8 authored by Bjorn Helgaas on 06 July 2007, 09:39:54 UTC, committed by Linus Torvalds on 06 July 2007, 17:23:43 UTC 
PNP SMCf010 quirk: work around Toshiba Portege 4000 ACPI issues
 
When we enable the SMCf010 IR device, the Toshiba Portege 4000 BIOS claims
the device is working, but it really isn't configured correctly.  The BIOS
*will* configure it, but only if we call _SRS after (1) reversing the order
of the SIR and FIR I/O port regions and (2) changing the IRQ from
active-high to active-low.

This patch addresses the 2.6.22 regression:
    "no irda0 interface (2.6.21 was OK), smsc does not find chip"

I tested this on a Portege 4000.  The smsc-ircc2 driver correctly detects
the device, and "irattach irda0 -s && irdadump" shows transmitted and
received packets.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Andrey Borzenkov <arvidjaar@mail.ru>
Cc: Samuel Ortiz <samuel@sortiz.org>
Cc: "Linus Walleij (LD/EAB)" <linus.walleij@ericsson.com>
Cc: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>
Cc: Adam Belay <ambx1@neo.rr.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent d57d973
History
Tip revision: 41a5311465b9de6d18e78b733a2c6e1b33e89be8 authored by Bjorn Helgaas on 06 July 2007, 09:39:54 UTC
PNP SMCf010 quirk: work around Toshiba Portege 4000 ACPI issues
Tip revision: 41a5311
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