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| author |   Ondrej Zary <linux@rainbow-software.org> | 2012-12-11 22:18:05 +0100 |
|---|---|---|
| committer |   H. Peter Anvin <hpa@linux.intel.com> | 2012-12-11 14:55:16 -0800 |
| commit | ad68652412276f68ad4fe3e1ecf5ee6880876783 (patch) | |
| tree | 0a030db11ef21d5091215be914832ed54fdcb859 /Documentation/x86 | |
| parent | Linux 3.7 (diff) | |
| download | linux-dev-ad68652412276f68ad4fe3e1ecf5ee6880876783.tar.xz linux-dev-ad68652412276f68ad4fe3e1ecf5ee6880876783.zip | |
x86, 8042: Enable A20 using KBC to fix S3 resume on some MSI laptops
Some MSI laptop BIOSes are broken - INT 15h code uses port 92h to enable A20
line but resume code assumes that KBC was used.
The laptop will not resume from S3 otherwise but powers off after a while
and then powers on again stuck with a blank screen.
Fix it by enabling A20 using KBC in i8042_platform_init for x86.
Fixes https://bugzilla.kernel.org/show_bug.cgi?id=12878
Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/201212112218.06551.linux@rainbow-software.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'Documentation/x86')
0 files changed, 0 insertions, 0 deletions