yt921x_reg_read
ret = read_poll_timeout(yt921x_reg_read, res,
res = yt921x_reg_read(priv, reg, &v);
res = yt921x_reg_read(priv, YT921X_MIRROR, &val);
res = yt921x_reg_read(priv, YT921X_LAG_HASH, &val);
res = yt921x_reg_read(priv, YT921X_FDB_OUT1, &data1);
res = yt921x_reg_read(priv, YT921X_FDB_OUT0, &data0);
res = yt921x_reg_read(priv, YT921X_FDB_OUT2, &data2);
res = yt921x_reg_read(priv, reg + 4 * i, &vals[i]);
res = yt921x_reg_read(priv, YT921X_FDB_OUT2, &val2);
res = yt921x_reg_read(priv, YT921X_FDB_OUT1, &ctrl1);
res = yt921x_reg_read(priv, YT921X_FDB_OUT1, &val1);
res = yt921x_reg_read(priv, YT921X_FDB_OUT2, &val2);
res = yt921x_reg_read(priv, YT921X_PORTn_QOS(port), &val);
res = yt921x_reg_read(priv, YT921X_PORTn_PRIO_ORD(port), &val);
res = yt921x_reg_read(priv, YT921X_IPM_DSCPn(dscp), &val);
res = yt921x_reg_read(priv, YT921X_IPM_DSCPn(dscp), &val);
res = yt921x_reg_read(priv, YT921X_CHIP_ID, &chipid);
res = yt921x_reg_read(priv, YT921X_CHIP_MODE, &mode);
res = yt921x_reg_read(priv, YT921X_SYS_CLK, &val);
res = yt921x_reg_read(priv, YT921X_CPU_TAG_TPID, &val);
res = yt921x_reg_read(priv, YT921X_INT_MBUS_DIN, &val);
res = yt921x_reg_read(priv, YT921X_EXT_MBUS_DIN, &val);
res = yt921x_reg_read(priv, reg, &val0);
res = yt921x_reg_read(priv, reg + 4, &val1);