https://github.com/torvalds/linux
Revision e284175a96e5af087ea7806b3e38282b524ff5b9 authored by Jiang Liu on 20 February 2014, 09:23:16 UTC, committed by Rafael J. Wysocki on 20 February 2014, 20:19:47 UTC
Fix regression caused by commit b072e53, which breaks loading nouveau
driver on optimus laptops.

On some platforms, ACPI _DSM method (nouveau_op_dsm_muid, function 0)
has special requirements on the fourth parameter, which is different
from ACPI specifications. So revert to the private implementation
to check availability of _DSM functions instead of using common
acpi_check_dsm() interface.

Fixes: b072e53b0a27 (ACPI / nouveau: replace open-coded _DSM code with helper functions)
Reported-and-tested-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
[rjw: Subject]
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
1 parent 6d0abec
History
Tip revision: e284175a96e5af087ea7806b3e38282b524ff5b9 authored by Jiang Liu on 20 February 2014, 09:23:16 UTC
ACPI / nouveau: fix probing regression related to _DSM
Tip revision: e284175
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.gitignore -rw-r--r-- 1.1 KB
.mailmap -rw-r--r-- 4.4 KB
COPYING -rw-r--r-- 18.3 KB
CREDITS -rw-r--r-- 93.3 KB
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MAINTAINERS -rw-r--r-- 266.3 KB
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REPORTING-BUGS -rw-r--r-- 7.3 KB

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