>> +
>> +    case 3:
>> +        if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
>> +            elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READWRITE) ||
>> +            elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
>> +            elantech_ps2_command(psmouse, NULL, reg) ||
>> +            elantech_ps2_command(psmouse, param, PSMOUSE_CMD_GETINFO)) {
>> +            rc = -1;
>> +        }
> Prefer to remove these big brace ?
> also with "case 1, case 2 "?

Just wondering What's wrong with this piece of code and what do you
sugguest to improve it?