diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index 361978a8485a8fd91f9642fee5434275bfc6de4b..26488aa893d5e5dc62ac2d01c332dd2d4ca9d2a1 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -2140,11 +2140,17 @@ s32 i2c_smbus_xfer(struct i2c_adapter *adapter, u16 addr, unsigned short flags, break; } i2c_unlock_adapter(adapter); - } else - res = i2c_smbus_xfer_emulated(adapter, addr, flags, read_write, - command, protocol, data); - return res; + if (res != -EOPNOTSUPP || !adapter->algo->master_xfer) + return res; + /* + * Fall back to i2c_smbus_xfer_emulated if the adapter doesn't + * implement native support for the SMBus operation. + */ + } + + return i2c_smbus_xfer_emulated(adapter, addr, flags, read_write, + command, protocol, data); } EXPORT_SYMBOL(i2c_smbus_xfer);