releases/3.19.2/hid-fixup-the-conflicting-keyboard-mappings-quirk.patch

   1 From 8e7b341037db1835ee6eea64663013cbfcf33575 Mon Sep 17 00:00:00 2001
   2 From: Jiri Kosina <jkosina@suse.cz>
   3 Date: Tue, 6 Jan 2015 22:34:19 +0100
   4 Subject: HID: fixup the conflicting keyboard mappings quirk
   5
   6 From: Jiri Kosina <jkosina@suse.cz>
   7
   8 commit 8e7b341037db1835ee6eea64663013cbfcf33575 upstream.
   9
  10 The ignore check that got added in 6ce901eb61 ("HID: input: fix confusion
  11 on conflicting mappings") needs to properly check for VARIABLE reports
  12 as well (ARRAY reports should be ignored), otherwise legitimate keyboards
  13 might break.
  14
  15 Fixes: 6ce901eb61 ("HID: input: fix confusion on conflicting mappings")
  16 Reported-by: Fredrik Hallenberg <megahallon@gmail.com>
  17 Reported-by: David Herrmann <dh.herrmann@gmail.com>
  18 Signed-off-by: Jiri Kosina <jkosina@suse.cz>
  19 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  20
  21 ---
  22  drivers/hid/hid-input.c |    1 +
  23  1 file changed, 1 insertion(+)
  24
  25 --- a/drivers/hid/hid-input.c
  26 +++ b/drivers/hid/hid-input.c
  27 @@ -1116,6 +1116,7 @@ void hidinput_hid_event(struct hid_devic
  28          */
  29         if (!(field->flags & (HID_MAIN_ITEM_RELATIVE |
  30                               HID_MAIN_ITEM_BUFFERED_BYTE)) &&
  31 +                             (field->flags & HID_MAIN_ITEM_VARIABLE) &&
  32             usage->usage_index < field->maxusage &&
  33             value == field->value[usage->usage_index])
  34                 return;