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| author | Mario Limonciello <mario_limonciello@dell.com> | 2009-06-10 19:40:46 +0000 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2009-06-17 23:44:07 -0400 |
| commit | 75d71c40dde5a9474c09ee291df22d50a1215bef (patch) | |
| tree | e4ed056b2f6add618a3eeb8410ab9b8cf8143a7d /drivers | |
| parent | 07a2039b8eb0af4ff464efd3dfd95de5c02648c6 (diff) | |
| download | linux-75d71c40dde5a9474c09ee291df22d50a1215bef.tar.gz linux-75d71c40dde5a9474c09ee291df22d50a1215bef.tar.bz2 linux-75d71c40dde5a9474c09ee291df22d50a1215bef.zip | |
dell-wmi: mask off upper bytes of event response
In debugging with some future machines that actually contain BIOS level
support for dell-wmi, I've determined that the upper half of the data that
comes back from wmi_get_event_data may sometimes contain extra information
that isn't currently relevant when pulling scan codes out of the data.
This causes dell-wmi to improperly respond to these events.
Signed-off-by: Mario Limonciello <mario_limonciello@dell.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/platform/x86/dell-wmi.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/platform/x86/dell-wmi.c b/drivers/platform/x86/dell-wmi.c index 2fab94162147..8a0d39ee9217 100644 --- a/drivers/platform/x86/dell-wmi.c +++ b/drivers/platform/x86/dell-wmi.c @@ -122,7 +122,12 @@ static void dell_wmi_notify(u32 value, void *context) if (obj && obj->type == ACPI_TYPE_BUFFER) { int *buffer = (int *)obj->buffer.pointer; - key = dell_wmi_get_entry_by_scancode(buffer[1]); + /* + * The upper bytes of the event may contain + * additional information, so mask them off for the + * scancode lookup + */ + key = dell_wmi_get_entry_by_scancode(buffer[1] & 0xFFFF); if (key) { input_report_key(dell_wmi_input_dev, key->keycode, 1); input_sync(dell_wmi_input_dev); |