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| author | Holger Macht <hmacht@suse.de> | 2009-01-20 12:18:24 +0100 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2009-02-07 04:08:15 +0100 |
| commit | fc5a9f8841ee87d93376ada5d73117d4d6a373ea (patch) | |
| tree | ca1098636b4918c00a49faf34c4e0d6e99852296 /kernel | |
| parent | ACPI: disable ACPI cleanly when bad RSDP found (diff) | |
| download | linux-fc5a9f8841ee87d93376ada5d73117d4d6a373ea.tar.xz linux-fc5a9f8841ee87d93376ada5d73117d4d6a373ea.zip | |
ACPI: dock: Don't eval _STA on every show_docked sysfs read
Some devices trigger a DEVICE_CHECK on every evalutation of _STA. This
can also be seen in commit 8b59560a3baf2e7c24e0fb92ea5d09eca92805db
(ACPI: dock: avoid check _STA method). If an undock is processed, the
dock driver sends a uevent and userspace might read the show_docked
property in sysfs. This causes an evaluation of _STA of the particular
device which causes the dock driver to immediately dock again.
In any case, evaluation of _STA (show_docked) does not necessarily mean
that we are docked, so check with the internal device structure.
http://bugzilla.kernel.org/show_bug.cgi?id=12360
Signed-off-by: Holger Macht <hmacht@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions