diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c
index 660dcb5414..dc3f44393f 100644
--- a/hw/arm/aspeed.c
+++ b/hw/arm/aspeed.c
@@ -385,13 +385,13 @@ static void palmetto_bmc_i2c_init(AspeedMachineState *bmc)
 
     /* The palmetto platform expects a ds3231 RTC but a ds1338 is
      * enough to provide basic RTC features. Alarms will be missing */
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 0), "ds1338", 0x68);
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 0), "ds1338", 0x68);
 
-    smbus_eeprom_init_one(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 0), 0x50,
+    smbus_eeprom_init_one(aspeed_i2c_get_bus(&soc->i2c, 0), 0x50,
                           eeprom_buf);
 
     /* add a TMP423 temperature sensor */
-    dev = i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 2),
+    dev = i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 2),
                            "tmp423", 0x4c);
     object_property_set_int(OBJECT(dev), "temperature0", 31000, &error_abort);
     object_property_set_int(OBJECT(dev), "temperature1", 28000, &error_abort);
@@ -404,16 +404,16 @@ static void ast2500_evb_i2c_init(AspeedMachineState *bmc)
     AspeedSoCState *soc = &bmc->soc;
     uint8_t *eeprom_buf = g_malloc0(8 * 1024);
 
-    smbus_eeprom_init_one(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 3), 0x50,
+    smbus_eeprom_init_one(aspeed_i2c_get_bus(&soc->i2c, 3), 0x50,
                           eeprom_buf);
 
     /* The AST2500 EVB expects a LM75 but a TMP105 is compatible */
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 7),
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 7),
                      TYPE_TMP105, 0x4d);
 
     /* The AST2500 EVB does not have an RTC. Let's pretend that one is
      * plugged on the I2C bus header */
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), "ds1338", 0x32);
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 11), "ds1338", 0x32);
 }
 
 static void ast2600_evb_i2c_init(AspeedMachineState *bmc)
@@ -428,36 +428,36 @@ static void romulus_bmc_i2c_init(AspeedMachineState *bmc)
 
     /* The romulus board expects Epson RX8900 I2C RTC but a ds1338 is
      * good enough */
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), "ds1338", 0x32);
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 11), "ds1338", 0x32);
 }
 
 static void swift_bmc_i2c_init(AspeedMachineState *bmc)
 {
     AspeedSoCState *soc = &bmc->soc;
 
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 3), "pca9552", 0x60);
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 3), "pca9552", 0x60);
 
     /* The swift board expects a TMP275 but a TMP105 is compatible */
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 7), "tmp105", 0x48);
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 7), "tmp105", 0x48);
     /* The swift board expects a pca9551 but a pca9552 is compatible */
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 7), "pca9552", 0x60);
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 7), "pca9552", 0x60);
 
     /* The swift board expects an Epson RX8900 RTC but a ds1338 is compatible */
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 8), "ds1338", 0x32);
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 8), "pca9552", 0x60);
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 8), "ds1338", 0x32);
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 8), "pca9552", 0x60);
 
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 9), "tmp423", 0x4c);
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 9), "tmp423", 0x4c);
     /* The swift board expects a pca9539 but a pca9552 is compatible */
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 9), "pca9552", 0x74);
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 9), "pca9552", 0x74);
 
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 10), "tmp423", 0x4c);
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 10), "tmp423", 0x4c);
     /* The swift board expects a pca9539 but a pca9552 is compatible */
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 10), "pca9552",
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 10), "pca9552",
                      0x74);
 
     /* The swift board expects a TMP275 but a TMP105 is compatible */
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 12), "tmp105", 0x48);
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 12), "tmp105", 0x4a);
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 12), "tmp105", 0x48);
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 12), "tmp105", 0x4a);
 }
 
 static void sonorapass_bmc_i2c_init(AspeedMachineState *bmc)
@@ -465,32 +465,32 @@ static void sonorapass_bmc_i2c_init(AspeedMachineState *bmc)
     AspeedSoCState *soc = &bmc->soc;
 
     /* bus 2 : */
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 2), "tmp105", 0x48);
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 2), "tmp105", 0x49);
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 2), "tmp105", 0x48);
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 2), "tmp105", 0x49);
     /* bus 2 : pca9546 @ 0x73 */
 
     /* bus 3 : pca9548 @ 0x70 */
 
     /* bus 4 : */
     uint8_t *eeprom4_54 = g_malloc0(8 * 1024);
-    smbus_eeprom_init_one(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 4), 0x54,
+    smbus_eeprom_init_one(aspeed_i2c_get_bus(&soc->i2c, 4), 0x54,
                           eeprom4_54);
     /* PCA9539 @ 0x76, but PCA9552 is compatible */
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 4), "pca9552", 0x76);
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 4), "pca9552", 0x76);
     /* PCA9539 @ 0x77, but PCA9552 is compatible */
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 4), "pca9552", 0x77);
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 4), "pca9552", 0x77);
 
     /* bus 6 : */
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 6), "tmp105", 0x48);
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 6), "tmp105", 0x49);
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 6), "tmp105", 0x48);
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 6), "tmp105", 0x49);
     /* bus 6 : pca9546 @ 0x73 */
 
     /* bus 8 : */
     uint8_t *eeprom8_56 = g_malloc0(8 * 1024);
-    smbus_eeprom_init_one(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 8), 0x56,
+    smbus_eeprom_init_one(aspeed_i2c_get_bus(&soc->i2c, 8), 0x56,
                           eeprom8_56);
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 8), "pca9552", 0x60);
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 8), "pca9552", 0x61);
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 8), "pca9552", 0x60);
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 8), "pca9552", 0x61);
     /* bus 8 : adc128d818 @ 0x1d */
     /* bus 8 : adc128d818 @ 0x1f */
 
@@ -515,25 +515,25 @@ static void witherspoon_bmc_i2c_init(AspeedMachineState *bmc)
     /* Bus 3: TODO dps310@76 */
     dev = i2c_try_create_slave(TYPE_PCA9552, 0x60);
     qdev_prop_set_string(dev, "description", "pca1");
-    i2c_realize_and_unref(dev, aspeed_i2c_get_bus(DEVICE(&soc->i2c), 3),
+    i2c_realize_and_unref(dev, aspeed_i2c_get_bus(&soc->i2c, 3),
                           &error_fatal);
 
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 4), "tmp423", 0x4c);
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 5), "tmp423", 0x4c);
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 4), "tmp423", 0x4c);
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 5), "tmp423", 0x4c);
 
     /* The Witherspoon expects a TMP275 but a TMP105 is compatible */
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 9), TYPE_TMP105,
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 9), TYPE_TMP105,
                      0x4a);
 
     /* The witherspoon board expects Epson RX8900 I2C RTC but a ds1338 is
      * good enough */
-    i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), "ds1338", 0x32);
+    i2c_create_slave(aspeed_i2c_get_bus(&soc->i2c, 11), "ds1338", 0x32);
 
-    smbus_eeprom_init_one(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), 0x51,
+    smbus_eeprom_init_one(aspeed_i2c_get_bus(&soc->i2c, 11), 0x51,
                           eeprom_buf);
     dev = i2c_try_create_slave(TYPE_PCA9552, 0x60);
     qdev_prop_set_string(dev, "description", "pca0");
-    i2c_realize_and_unref(dev, aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11),
+    i2c_realize_and_unref(dev, aspeed_i2c_get_bus(&soc->i2c, 11),
                           &error_fatal);
     /* Bus 11: TODO ucd90160@64 */
 }
diff --git a/hw/i2c/aspeed_i2c.c b/hw/i2c/aspeed_i2c.c
index fb973a983d..518a3f5c6f 100644
--- a/hw/i2c/aspeed_i2c.c
+++ b/hw/i2c/aspeed_i2c.c
@@ -959,9 +959,8 @@ static void aspeed_i2c_register_types(void)
 type_init(aspeed_i2c_register_types)
 
 
-I2CBus *aspeed_i2c_get_bus(DeviceState *dev, int busnr)
+I2CBus *aspeed_i2c_get_bus(AspeedI2CState *s, int busnr)
 {
-    AspeedI2CState *s = ASPEED_I2C(dev);
     AspeedI2CClass *aic = ASPEED_I2C_GET_CLASS(s);
     I2CBus *bus = NULL;
 
diff --git a/include/hw/i2c/aspeed_i2c.h b/include/hw/i2c/aspeed_i2c.h
index f1b9e5bf91..243789ae5d 100644
--- a/include/hw/i2c/aspeed_i2c.h
+++ b/include/hw/i2c/aspeed_i2c.h
@@ -93,6 +93,6 @@ typedef struct AspeedI2CClass {
 
 } AspeedI2CClass;
 
-I2CBus *aspeed_i2c_get_bus(DeviceState *dev, int busnr);
+I2CBus *aspeed_i2c_get_bus(AspeedI2CState *s, int busnr);
 
 #endif /* ASPEED_I2C_H */