1913 	int reg18, reg19, reg1f;  in r820t_imr()  local
1928 	reg18 = r820t_read_cache_reg(priv, 0x18);  in r820t_imr()
1932 	reg18 &= 0xf0;      /* set ring[3:0] */  in r820t_imr()
1933 	reg18 |= n_ring;  in r820t_imr()
1937 	reg18 &= 0xdf;   /* clear ring_se23 */  in r820t_imr()
1944 		reg18 |= 0x20;  /* ring_se23 = 1 */  in r820t_imr()
1950 		reg18 |= 0x00;  /* ring_se23 = 0 */  in r820t_imr()
1956 		reg18 |= 0x00;  /* ring_se23 = 0 */  in r820t_imr()
1962 		reg18 |= 0x20;  /* ring_se23 = 1 */  in r820t_imr()
1968 		reg18 |= 0x00;  /* ring_se23 = 0 */  in r820t_imr()
1974 		reg18 |= 0x00;  /* ring_se23 = 0 */  in r820t_imr()
1984 	rc = r820t_write_reg(priv, 0x18, reg18);  in r820t_imr()