Make thinkpad_acpi call led_notify_brightness_change on the kbd_led led_classdev
registered by thinkpad_acpi when the kbd backlight brightness changes.

Signed-off-by: Hans de Goede <hdego...@redhat.com>
---
Changes in v3:
-This is a new patch in v3 of this patch-set
Changes in v4:
-No Changes
---
 drivers/platform/x86/thinkpad_acpi.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/platform/x86/thinkpad_acpi.c 
b/drivers/platform/x86/thinkpad_acpi.c
index b65ce75..5dcd7d8b 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -162,6 +162,7 @@ enum tpacpi_hkey_event_t {
        TP_HKEY_EV_HOTKEY_BASE          = 0x1001, /* first hotkey (FN+F1) */
        TP_HKEY_EV_BRGHT_UP             = 0x1010, /* Brightness up */
        TP_HKEY_EV_BRGHT_DOWN           = 0x1011, /* Brightness down */
+       TP_HKEY_EV_THINKLIGHT           = 0x1012, /* Thinklight/kbd backlight */
        TP_HKEY_EV_VOL_UP               = 0x1015, /* Volume up or unmute */
        TP_HKEY_EV_VOL_DOWN             = 0x1016, /* Volume down or unmute */
        TP_HKEY_EV_VOL_MUTE             = 0x1017, /* Mixer output mute */
@@ -5167,6 +5168,8 @@ static int __init kbdlight_init(struct ibm_init_struct 
*iibm)
                return rc;
        }
 
+       tpacpi_hotkey_driver_mask_set(hotkey_driver_mask |
+                                     TP_ACPI_HKEY_THNKLGHT_MASK);
        return 0;
 }
 
@@ -9114,6 +9117,8 @@ static void tpacpi_driver_event(const unsigned int 
hkey_event)
                        volume_alsa_notify_change();
                }
        }
+       if (tp_features.kbdlight && hkey_event == TP_HKEY_EV_THINKLIGHT)
+               led_notify_brightness_change(&tpacpi_led_kbdlight.led_classdev);
 }
 
 static void hotkey_driver_event(const unsigned int scancode)
-- 
2.9.3


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