thinkpad-acpi: fix detection of old ThinkPads
commit0876d729c595830f202f08bc858075d0ce1a8c67
authorHenrique de Moraes Holschuh <hmh@hmh.eng.br>
Sat, 14 Nov 2009 02:56:24 +0000 (14 00:56 -0200)
committerHenrique de Moraes Holschuh <hmh@hmh.eng.br>
Sat, 14 Nov 2009 02:56:24 +0000 (14 00:56 -0200)
treec09a1f8373dc5f841fcccde2f47689f83f249a0e
parent4d886ca44888230e7ba98c34ca0182cd29d380bd
thinkpad-acpi: fix detection of old ThinkPads

There is a problem in the quirk tables used by tpacpi_is_fw_known()
and tpacpi_check_outdated_fw(), which causes outdated BIOSes that are
lacking the EC firmware ID DMI field to never match.

This breaks module loading on, e.g. a T23 with outdated BIOS, and the
module will refuse to load unless the "force_load=1" parameter is
given.

Fix the quirk tables so that they can also match the outdated BIOSes,
which in turn will both fix the module loading, and also warn the user
that he is using outdated firmware and should upgrade.

This fixes a serious regression, introduced by commit
e675abafcc0df38125e6e94a9ba91c92fe774f52,
"thinkpad-acpi: be more strict when detecting a ThinkPad".

Tracked by bugzilla #14597.

Reported-by: Paul Kimoto <kimoto@lightlink.com>
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Tested-by: Paul Kimoto <kimoto@lightlink.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
drivers/platform/x86/thinkpad_acpi.c