It looks like that on Dell Latitude E6440 is WMI event 0x0012 0x0003 sent
when display changes brightness. When it happens kernel prints
"dell_wmi: Unknown WMI event type 0x12" message into dmesg.
So ignore it for now to not spam dmesg.
Signed-off-by: Pali Rohár <pali@xxxxxxxxxx>
---
drivers/platform/x86/dell/dell-wmi-base.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/platform/x86/dell/dell-wmi-base.c b/drivers/platform/x86/dell/dell-wmi-base.c
index e07d3ba85a3f..0a259a27459f 100644
--- a/drivers/platform/x86/dell/dell-wmi-base.c
+++ b/drivers/platform/x86/dell/dell-wmi-base.c
@@ -344,6 +344,9 @@ static const struct key_entry dell_wmi_keymap_type_0011[] = {
* They are events with extended data
*/
static const struct key_entry dell_wmi_keymap_type_0012[] = {
+ /* Backlight brightness change event */
+ { KE_IGNORE, 0x0003, { KEY_RESERVED } },
+
/* Ultra-performance mode switch request */
{ KE_IGNORE, 0x000d, { KEY_RESERVED } },
--
2.20.1
