|author||Henrique de Moraes Holschuh <firstname.lastname@example.org>||2009-09-12 15:22:15 -0300|
|committer||Len Brown <email@example.com>||2009-09-19 00:53:34 -0400|
thinkpad-acpi: deprecate hotkey_bios_mask
Some analysis of the ACPI DSDTs shows that the HKEY pre-enabled mask is always 0x80c (FN+F3,FN+F4 and FN+F12), which are the hotkeys that the second gen of HKEY firmware supported (the first gen didn't report any hotkeys, the second reported these tree hotkeys but had no mask support, and the third added mask support). So, this is probably some sort of backwards compatibility with older versions of the IBM ThinkVantage suite. We have no use for that, and I know of exactly ZERO users of that attribute, anyway. Start the process of getting rid of it. Signed-off-by: Henrique de Moraes Holschuh <firstname.lastname@example.org> Signed-off-by: Len Brown <email@example.com>
2 files changed, 7 insertions, 1 deletions
diff --git a/Documentation/laptops/thinkpad-acpi.txt b/Documentation/laptops/thinkpad-acpi.txt
index e2ddcdeb61b6..ab4b58eaa7f4 100644
@@ -240,9 +240,13 @@ sysfs notes:
+ DEPRECATED, DON'T USE, WILL BE REMOVED IN THE FUTURE.
Returns the hot keys mask when thinkpad-acpi was loaded.
Upon module unload, the hot keys mask will be restored
- to this value.
+ to this value. This is always 0x80c, because those are
+ the hotkeys that were supported by ancient firmware
+ without mask support.
DEPRECATED, WILL BE REMOVED SOON.
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 679a73b43191..6b667891fc3b 100644
@@ -2544,6 +2544,8 @@ static ssize_t hotkey_bios_mask_show(struct device *dev,
struct device_attribute *attr,
+ "This attribute is useless.");
return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);