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Diffstat (limited to 'drivers/input/mouse/trackpoint.c')
| -rw-r--r-- | drivers/input/mouse/trackpoint.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/input/mouse/trackpoint.c b/drivers/input/mouse/trackpoint.c index 7e2dc5e56632..0b49f29bf0da 100644 --- a/drivers/input/mouse/trackpoint.c +++ b/drivers/input/mouse/trackpoint.c @@ -383,6 +383,9 @@ int trackpoint_detect(struct psmouse *psmouse, bool set_properties) if (trackpoint_read(&psmouse->ps2dev, TP_EXT_BTN, &button_info)) { psmouse_warn(psmouse, "failed to get extended button data, assuming 3 buttons\n"); button_info = 0x33; + } else if (!button_info) { + psmouse_warn(psmouse, "got 0 in extended button data, assuming 3 buttons\n"); + button_info = 0x33; } psmouse->private = kzalloc(sizeof(struct trackpoint_data), GFP_KERNEL); |