diff options
Diffstat (limited to 'drivers/i2c/busses/i2c-pmcmsp.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-pmcmsp.c | 17 |
1 files changed, 1 insertions, 16 deletions
diff --git a/drivers/i2c/busses/i2c-pmcmsp.c b/drivers/i2c/busses/i2c-pmcmsp.c index dae8ac618a52..0829cb696d9d 100644 --- a/drivers/i2c/busses/i2c-pmcmsp.c +++ b/drivers/i2c/busses/i2c-pmcmsp.c @@ -444,16 +444,6 @@ static enum pmcmsptwi_xfer_result pmcmsptwi_xfer_cmd( { enum pmcmsptwi_xfer_result retval; - if ((cmd->type == MSP_TWI_CMD_WRITE && cmd->write_len == 0) || - (cmd->type == MSP_TWI_CMD_READ && cmd->read_len == 0) || - (cmd->type == MSP_TWI_CMD_WRITE_READ && - (cmd->read_len == 0 || cmd->write_len == 0))) { - dev_err(&pmcmsptwi_adapter.dev, - "%s: Cannot transfer less than 1 byte\n", - __func__); - return -EINVAL; - } - mutex_lock(&data->lock); dev_dbg(&pmcmsptwi_adapter.dev, "Setting address to 0x%04x\n", cmd->addr); @@ -532,11 +522,6 @@ static int pmcmsptwi_master_xfer(struct i2c_adapter *adap, cmd.write_data = msg->buf; } - if (msg->len == 0) { - dev_err(&adap->dev, "Zero-byte messages unsupported\n"); - return -EINVAL; - } - cmd.addr = msg->addr; if (msg->flags & I2C_M_TEN) { @@ -578,7 +563,7 @@ static u32 pmcmsptwi_i2c_func(struct i2c_adapter *adapter) } static const struct i2c_adapter_quirks pmcmsptwi_i2c_quirks = { - .flags = I2C_AQ_COMB_WRITE_THEN_READ, + .flags = I2C_AQ_COMB_WRITE_THEN_READ | I2C_AQ_NO_ZERO_LEN, .max_write_len = MSP_MAX_BYTES_PER_RW, .max_read_len = MSP_MAX_BYTES_PER_RW, .max_comb_1st_msg_len = MSP_MAX_BYTES_PER_RW, |