diff options
Diffstat (limited to 'drivers/i2c/i2c_core.c')
| -rw-r--r-- | drivers/i2c/i2c_core.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/i2c/i2c_core.c b/drivers/i2c/i2c_core.c index b263562ed..fe341cde6 100644 --- a/drivers/i2c/i2c_core.c +++ b/drivers/i2c/i2c_core.c @@ -283,20 +283,22 @@ unsigned int i2c_get_bus_num(void) */ int i2c_set_bus_num(unsigned int bus) { - int max = ll_entry_count(struct i2c_adapter, i2c); + int max; + + if ((bus == I2C_BUS) && (I2C_ADAP->init_done > 0)) + return 0; - if (I2C_ADAPTER(bus) >= max) { - printf("Error, wrong i2c adapter %d max %d possible\n", - I2C_ADAPTER(bus), max); - return -2; - } #ifndef CONFIG_SYS_I2C_DIRECT_BUS if (bus >= CONFIG_SYS_NUM_I2C_BUSES) return -1; #endif - if ((bus == I2C_BUS) && (I2C_ADAP->init_done > 0)) - return 0; + max = ll_entry_count(struct i2c_adapter, i2c); + if (I2C_ADAPTER(bus) >= max) { + printf("Error, wrong i2c adapter %d max %d possible\n", + I2C_ADAPTER(bus), max); + return -2; + } #ifndef CONFIG_SYS_I2C_DIRECT_BUS i2c_mux_disconnet_all(); |