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HID: wacom: Declare tool ID 0x84a as an Intuos eraser
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The eraser end of the 8K pen available for the MobileStudio Pro has a tool
ID of 0x84a. The 'wacom_intuos_get_tool_type' function does not currently
recognize this ID, causing it to return BTN_TOOL_PEN rather than
BTN_TOOL_RUBBER. This does not cause a problem for the MobileStudio Pro
since, as a HID_GENERIC device, the driver relies on the state of the
HID_DG_INVERT usage instead. It would, however, cause problems if the pen
is used with devices that use the traditional 'wacom_intuos_irq' codepath
instead.

Signed-off-by: Jason Gerecke <[email protected]>
Acked-by: Benjamin Tissoires <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
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jigpu authored and Jiri Kosina committed Nov 15, 2016
1 parent a35f09b commit 9ce9a12
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1 change: 1 addition & 0 deletions drivers/hid/wacom_wac.c
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Original file line number Diff line number Diff line change
Expand Up @@ -645,6 +645,7 @@ static int wacom_intuos_get_tool_type(int tool_id)
break;

case 0x82a: /* Eraser */
case 0x84a:
case 0x85a:
case 0x91a:
case 0xd1a:
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