kbd_data
reg->kbd_data = base + 0x04;
reg->kbd_data == kbms_consreg.kbd_data)
v = *reg->kbd_data;
volatile uint8_t *data = reg->kbd_data;
(void)*reg->kbd_data;
*reg->kbd_data = 0x92;
*reg->kbd_data = 0x90;
kbms_consreg.kbd_data = (void *)data;
reg->kbd_data = (void *)data;
v = *reg->kbd_data;
volatile uint8_t *kbd_data;