diff options
| author |   Wolfram Sang <wsa+renesas@sang-engineering.com> | 2018-07-23 22:26:06 +0200 |
|---|---|---|
| committer |   Wolfram Sang <wsa@the-dreams.de> | 2018-08-04 23:24:50 +0200 |
| commit | 40fce5217055317898e7c2f959bf0aee5ebc4351 (patch) | |
| tree | 0b126ab104d66e14f9688b2632ed0558c5c638b7 /drivers/i2c/busses | |
| parent | i2c: quirks: add zero length checks (diff) | |
| download | linux-dev-40fce5217055317898e7c2f959bf0aee5ebc4351.tar.xz linux-dev-40fce5217055317898e7c2f959bf0aee5ebc4351.zip | |
i2c: designware-master: use core to detect 'no zero length' quirk
And don't reimplement in the driver.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c/busses')
| -rw-r--r-- | drivers/i2c/busses/i2c-designware-master.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/drivers/i2c/busses/i2c-designware-master.c b/drivers/i2c/busses/i2c-designware-master.c index fc7c255c80af..a1717bff06a8 100644 --- a/drivers/i2c/busses/i2c-designware-master.c +++ b/drivers/i2c/busses/i2c-designware-master.c @@ -274,13 +274,6 @@ i2c_dw_xfer_msg(struct dw_i2c_dev *dev) break; } - if (msgs[dev->msg_write_idx].len == 0) { - dev_err(dev->dev, - "%s: invalid message length\n", __func__); - dev->msg_err = -EINVAL; - break; - } - if (!(dev->status & STATUS_WRITE_IN_PROGRESS)) { /* new i2c_msg */ buf = msgs[dev->msg_write_idx].buf; @@ -523,6 +516,10 @@ static const struct i2c_algorithm i2c_dw_algo = { .functionality = i2c_dw_func, }; +static const struct i2c_adapter_quirks i2c_dw_quirks = { + .flags = I2C_AQ_NO_ZERO_LEN, +}; + static u32 i2c_dw_read_clear_intrbits(struct dw_i2c_dev *dev) { u32 stat; @@ -718,6 +715,7 @@ int i2c_dw_probe(struct dw_i2c_dev *dev) "Synopsys DesignWare I2C adapter"); adap->retries = 3; adap->algo = &i2c_dw_algo; + adap->quirks = &i2c_dw_quirks; adap->dev.parent = dev->dev; i2c_set_adapdata(adap, dev); |