> > > > > > > > And what does mean "no function"? I do not know what should I imagine > if > > > I receive key press marked as "no function". > > > > It means no action is expected to occur, should behave like a no-op. I > think > > discarding it makes fine sense. > > Thank you! This was missing bit of information. > > Just I'm curious, why firmware sends "no-op" event which we could ignore? > :D >
I don't have details on this, but I can at least hypothesize a situation that there was a manufacturing error with the wrong keyboard applied. Like think if the system has keyboard without a backlight and there was a keyboard with a silkscreened key for modifying backlight. In this case firmware events related to keyboard backlight shouldn't flow through so firmware could instead send this type of event. > I can imagine that those events / scan codes may contain some > information which we can use... I mean I suppose you can choose to ignore my comments, but I'm telling you this event doesn't contain anything useful. > > > > > > > > > E.g. I remember that pressing Fn+Q or Fn+W on some Dell Latitude > > > > > generates code 255, which could prove my thesis about "special > codes" > > > > > (which are probably not found in e.g. Windows or Linux mapping > tables). > > > > > > > > > > > > }; > > > > > > > > > > > > > > /* > > > > > > > @@ -503,10 +504,7 @@ static void handle_dmi_entry(const struct > > > > > dmi_header *dm, void *opaque) > > > > > > > &table->keymap[i]; > > > > > > > > > > > > > > /* Uninitialized entries are 0 aka KEY_RESERVED. */ > > > > > > > - u16 keycode = (bios_entry->keycode < > > > > > > > - ARRAY_SIZE(bios_to_linux_keycode)) ? > > > > > > > - bios_to_linux_keycode[bios_entry->keycode] : > > > > > > > - KEY_RESERVED; > > > > > > > + u16 keycode = bios_to_linux_keycode[bios_entry- > >keycode]; > > > > > > > > > > > > > > /* > > > > > > > * Log if we find an entry in the DMI table that we > don't > > > > > > > > > > > > > > > > > > > Something like: > > > > > > > > > > > > u16 keycode; > > > > > > > > > > > > keycode = bios_entry->keycode == 0xffff ? KEY_UNKNOWN : > > > > > > (bios_entry->keycode < > > > > > > ARRAY_SIZE(bios_to_linux_keycode)) ? > > > > > > bios_to_linux_keycode[bios_entry->keycode] : > > > > > > KEY_RESERVED; > > > > > > > > > > > > > > > > > > > > > > > > Also please fix this: > > > > > > (no To-header on input) <> > > > > > > > > > > Hint: specifying git send-email with '--to' argument instead of '-- > cc' > > > > > should help. > > > > > > > > > > > > > > > > > -- > > > > > > ~Randy > > > > > >
