diff options
| author | Wolfram Sang <wsa+renesas@sang-engineering.com> | 2018-07-23 23:26:11 +0300 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2018-08-05 00:25:07 +0300 |
| commit | 5314355a916aea235968d4c51710a65b7c9811ef (patch) | |
| tree | 84143f38f32e6aa6079113256dd77983ef6f68c7 /drivers/i2c/busses/i2c-stu300.c | |
| parent | 22dda3e4f8219bc502c439277df3a15e9235a7ec (diff) | |
| download | linux-5314355a916aea235968d4c51710a65b7c9811ef.tar.xz | |
i2c: stu300: 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: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c/busses/i2c-stu300.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-stu300.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/i2c/busses/i2c-stu300.c b/drivers/i2c/busses/i2c-stu300.c index fce52bdab2b7..5503fa171df0 100644 --- a/drivers/i2c/busses/i2c-stu300.c +++ b/drivers/i2c/busses/i2c-stu300.c @@ -673,12 +673,6 @@ static int stu300_xfer_msg(struct i2c_adapter *adap, msg->addr, msg->len, msg->flags, stop); } - /* Zero-length messages are not supported by this hardware */ - if (msg->len == 0) { - ret = -EINVAL; - goto exit_disable; - } - /* * For some reason, sending the address sometimes fails when running * on the 13 MHz clock. No interrupt arrives. This is a work around, @@ -863,6 +857,10 @@ static const struct i2c_algorithm stu300_algo = { .functionality = stu300_func, }; +static const struct i2c_adapter_quirks stu300_quirks = { + .flags = I2C_AQ_NO_ZERO_LEN, +}; + static int stu300_probe(struct platform_device *pdev) { struct stu300_dev *dev; @@ -920,6 +918,8 @@ static int stu300_probe(struct platform_device *pdev) adap->algo = &stu300_algo; adap->dev.parent = &pdev->dev; adap->dev.of_node = pdev->dev.of_node; + adap->quirks = &stu300_quirks; + i2c_set_adapdata(adap, dev); /* i2c device drivers may be active on return from add_adapter() */ |