I8042_STAT_OUTBF
if (! (stat & I8042_STAT_OUTBF)) {
if ((stat & I8042_STAT_OUTBF) == 0)
if ((stat & I8042_STAT_OUTBF) == 0) {
if (! (stat & I8042_STAT_OUTBF))
I8042_STAT_OUTBF)) {
buffer_stat &= (I8042_STAT_OUTBF | I8042_STAT_AUXBF);
case (I8042_STAT_OUTBF | I8042_STAT_AUXBF):