releases/upstream/2.6.23-rc1/0007-ACPI-thinkpad-acpi-checkpoint-sysfs-interface-vers.patch

   1 From 94b08713186cc47a5c367a866cc0a0a762721455 Mon Sep 17 00:00:00 2001
   2 From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
   3 Date: Wed, 18 Jul 2007 23:45:32 -0300
   4 Subject: ACPI: thinkpad-acpi: checkpoint sysfs interface version due to hotkey
   5
   6 The change in the size of the hotkey mask, the hability to report the keys
   7 that use the higher bits, and the addition of the hotkey_radio_sw attribute
   8 are important enough features to warrant increasing the minor field of the
   9 sysfs interface version.
  10
  11 Also, document a bit better how and when the thinkpad-acpi sysfs interface
  12 version will be updated.
  13
  14 Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
  15 Signed-off-by: Len Brown <len.brown@intel.com>
  16 ---
  17  Documentation/thinkpad-acpi.txt |   17 +++++++++++++++++
  18  drivers/misc/thinkpad_acpi.c    |    2 +-
  19  2 files changed, 18 insertions(+), 1 deletions(-)
  20
  21 diff --git a/Documentation/thinkpad-acpi.txt b/Documentation/thinkpad-acpi.txt
  22 index fe26e50..7a06a27 100644
  23 --- a/Documentation/thinkpad-acpi.txt
  24 +++ b/Documentation/thinkpad-acpi.txt
  25 @@ -134,6 +134,21 @@ end of this document.  Changes to the sysfs interface done by the kernel
  26  subsystems are not documented here, nor are they tracked by this
  27  attribute.
  28
  29 +Changes to the thinkpad-acpi sysfs interface are only considered
  30 +non-experimental when they are submitted to Linux mainline, at which
  31 +point the changes in this interface are documented and interface_version
  32 +may be updated.  If you are using any thinkpad-acpi features not yet
  33 +sent to mainline for merging, you do so on your own risk: these features
  34 +may disappear, or be implemented in a different and incompatible way by
  35 +the time they are merged in Linux mainline.
  36 +
  37 +Changes that are backwards-compatible by nature (e.g. the addition of
  38 +attributes that do not change the way the other attributes work) do not
  39 +always warrant an update of interface_version.  Therefore, one must
  40 +expect that an attribute might not be there, and deal with it properly
  41 +(an attribute not being there *is* a valid way to make it clear that a
  42 +feature is not available in sysfs).
  43 +
  44  Hot keys
  45  --------
  46
  47 @@ -989,3 +1004,5 @@ Sysfs interface changelog:
  48
  49  0x000100:      Initial sysfs support, as a single platform driver and
  50                 device.
  51 +0x000200:      Hot key support for 32 hot keys, and radio slider switch
  52 +               support.
  53 diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c
  54 index 3cf37bb..4d71893 100644
  55 --- a/drivers/misc/thinkpad_acpi.c
  56 +++ b/drivers/misc/thinkpad_acpi.c
  57 @@ -22,7 +22,7 @@
  58   */
  59
  60  #define IBM_VERSION "0.14"
  61 -#define TPACPI_SYSFS_VERSION 0x000100
  62 +#define TPACPI_SYSFS_VERSION 0x000200
  63
  64  /*
  65   *  Changelog:
  66 --
  67 1.5.2.1
  68