Hi Heiner,
Thank you for the patch.
On Thu, Apr 18, 2024 at 10:55:39PM +0200, Heiner Kallweit wrote:
> 99a741aa7a2d ("i2c: mux: gpio: remove support for class-based device
> instantiation") removed the last call to i2c_mux_add_adapter() with a
> non-null class argument. Therefore the class argument can be removed.
>
> Note: Class-based device instantiation is a legacy mechanism which
> shouldn't be used in new code, so we can rule out that this argument
> may be needed again in the future.
>
> Signed-off-by: Heiner Kallweit <hkallweit1@xxxxxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/bridge/sii902x.c | 2 +-
> drivers/i2c/i2c-mux.c | 24 +---------------------
> drivers/i2c/muxes/i2c-arb-gpio-challenge.c | 2 +-
> drivers/i2c/muxes/i2c-mux-gpio.c | 2 +-
> drivers/i2c/muxes/i2c-mux-gpmux.c | 2 +-
> drivers/i2c/muxes/i2c-mux-ltc4306.c | 2 +-
> drivers/i2c/muxes/i2c-mux-mlxcpld.c | 2 +-
> drivers/i2c/muxes/i2c-mux-pca9541.c | 2 +-
> drivers/i2c/muxes/i2c-mux-pca954x.c | 2 +-
> drivers/i2c/muxes/i2c-mux-pinctrl.c | 2 +-
> drivers/i2c/muxes/i2c-mux-reg.c | 2 +-
> drivers/iio/gyro/mpu3050-i2c.c | 2 +-
> drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c | 2 +-
> drivers/media/dvb-frontends/af9013.c | 2 +-
> drivers/media/dvb-frontends/lgdt3306a.c | 2 +-
> drivers/media/dvb-frontends/m88ds3103.c | 2 +-
> drivers/media/dvb-frontends/rtl2830.c | 2 +-
> drivers/media/dvb-frontends/rtl2832.c | 2 +-
> drivers/media/dvb-frontends/si2168.c | 2 +-
> drivers/media/i2c/max9286.c | 2 +-
> drivers/media/usb/cx231xx/cx231xx-i2c.c | 5 +----
> drivers/of/unittest.c | 2 +-
> include/linux/i2c-mux.h | 3 +--
> 23 files changed, 23 insertions(+), 49 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c
> index 8f84e9824..2fbeda902 100644
> --- a/drivers/gpu/drm/bridge/sii902x.c
> +++ b/drivers/gpu/drm/bridge/sii902x.c
> @@ -1092,7 +1092,7 @@ static int sii902x_init(struct sii902x *sii902x)
> }
>
> sii902x->i2cmux->priv = sii902x;
> - ret = i2c_mux_add_adapter(sii902x->i2cmux, 0, 0, 0);
> + ret = i2c_mux_add_adapter(sii902x->i2cmux, 0, 0);
> if (ret)
> goto err_unreg_audio;
>
> diff --git a/drivers/i2c/i2c-mux.c b/drivers/i2c/i2c-mux.c
> index 57ff09f18..fda72e8be 100644
> --- a/drivers/i2c/i2c-mux.c
> +++ b/drivers/i2c/i2c-mux.c
> @@ -127,19 +127,6 @@ static u32 i2c_mux_functionality(struct i2c_adapter *adap)
> return parent->algo->functionality(parent);
> }
>
> -/* Return all parent classes, merged */
> -static unsigned int i2c_mux_parent_classes(struct i2c_adapter *parent)
> -{
> - unsigned int class = 0;
> -
> - do {
> - class |= parent->class;
> - parent = i2c_parent_is_i2c_adapter(parent);
> - } while (parent);
> -
> - return class;
> -}
> -
> static void i2c_mux_lock_bus(struct i2c_adapter *adapter, unsigned int flags)
> {
> struct i2c_mux_priv *priv = adapter->algo_data;
> @@ -281,8 +268,7 @@ static const struct i2c_lock_operations i2c_parent_lock_ops = {
> };
>
> int i2c_mux_add_adapter(struct i2c_mux_core *muxc,
> - u32 force_nr, u32 chan_id,
> - unsigned int class)
> + u32 force_nr, u32 chan_id)
> {
> struct i2c_adapter *parent = muxc->parent;
> struct i2c_mux_priv *priv;
> @@ -340,14 +326,6 @@ int i2c_mux_add_adapter(struct i2c_mux_core *muxc,
> else
> priv->adap.lock_ops = &i2c_parent_lock_ops;
>
> - /* Sanity check on class */
> - if (i2c_mux_parent_classes(parent) & class & ~I2C_CLASS_DEPRECATED)
> - dev_err(&parent->dev,
> - "Segment %d behind mux can't share classes with ancestors\n",
> - chan_id);
> - else
> - priv->adap.class = class;
> -
> /*
> * Try to populate the mux adapter's of_node, expands to
> * nothing if !CONFIG_OF.
> diff --git a/drivers/i2c/muxes/i2c-arb-gpio-challenge.c b/drivers/i2c/muxes/i2c-arb-gpio-challenge.c
> index 24168e9f7..7aa6e795d 100644
> --- a/drivers/i2c/muxes/i2c-arb-gpio-challenge.c
> +++ b/drivers/i2c/muxes/i2c-arb-gpio-challenge.c
> @@ -167,7 +167,7 @@ static int i2c_arbitrator_probe(struct platform_device *pdev)
> }
>
> /* Actually add the mux adapter */
> - ret = i2c_mux_add_adapter(muxc, 0, 0, 0);
> + ret = i2c_mux_add_adapter(muxc, 0, 0);
> if (ret)
> i2c_put_adapter(muxc->parent);
>
> diff --git a/drivers/i2c/muxes/i2c-mux-gpio.c b/drivers/i2c/muxes/i2c-mux-gpio.c
> index 0fbb33a3d..d6bbb8b68 100644
> --- a/drivers/i2c/muxes/i2c-mux-gpio.c
> +++ b/drivers/i2c/muxes/i2c-mux-gpio.c
> @@ -207,7 +207,7 @@ static int i2c_mux_gpio_probe(struct platform_device *pdev)
> for (i = 0; i < mux->data.n_values; i++) {
> u32 nr = mux->data.base_nr ? (mux->data.base_nr + i) : 0;
>
> - ret = i2c_mux_add_adapter(muxc, nr, mux->data.values[i], 0);
> + ret = i2c_mux_add_adapter(muxc, nr, mux->data.values[i]);
> if (ret)
> goto add_adapter_failed;
> }
> diff --git a/drivers/i2c/muxes/i2c-mux-gpmux.c b/drivers/i2c/muxes/i2c-mux-gpmux.c
> index 8305661e1..10d63307b 100644
> --- a/drivers/i2c/muxes/i2c-mux-gpmux.c
> +++ b/drivers/i2c/muxes/i2c-mux-gpmux.c
> @@ -124,7 +124,7 @@ static int i2c_mux_probe(struct platform_device *pdev)
> goto err_children;
> }
>
> - ret = i2c_mux_add_adapter(muxc, 0, chan, 0);
> + ret = i2c_mux_add_adapter(muxc, 0, chan);
> if (ret)
> goto err_children;
> }
> diff --git a/drivers/i2c/muxes/i2c-mux-ltc4306.c b/drivers/i2c/muxes/i2c-mux-ltc4306.c
> index 23766d853..19a7c3709 100644
> --- a/drivers/i2c/muxes/i2c-mux-ltc4306.c
> +++ b/drivers/i2c/muxes/i2c-mux-ltc4306.c
> @@ -279,7 +279,7 @@ static int ltc4306_probe(struct i2c_client *client)
>
> /* Now create an adapter for each channel */
> for (num = 0; num < chip->nchans; num++) {
> - ret = i2c_mux_add_adapter(muxc, 0, num, 0);
> + ret = i2c_mux_add_adapter(muxc, 0, num);
> if (ret) {
> i2c_mux_del_adapters(muxc);
> return ret;
> diff --git a/drivers/i2c/muxes/i2c-mux-mlxcpld.c b/drivers/i2c/muxes/i2c-mux-mlxcpld.c
> index 4c6ed1d58..3f06aa333 100644
> --- a/drivers/i2c/muxes/i2c-mux-mlxcpld.c
> +++ b/drivers/i2c/muxes/i2c-mux-mlxcpld.c
> @@ -154,7 +154,7 @@ static int mlxcpld_mux_probe(struct platform_device *pdev)
>
> /* Create an adapter for each channel. */
> for (num = 0; num < pdata->num_adaps; num++) {
> - err = i2c_mux_add_adapter(muxc, 0, pdata->chan_ids[num], 0);
> + err = i2c_mux_add_adapter(muxc, 0, pdata->chan_ids[num]);
> if (err)
> goto virt_reg_failed;
> }
> diff --git a/drivers/i2c/muxes/i2c-mux-pca9541.c b/drivers/i2c/muxes/i2c-mux-pca9541.c
> index ce0fb6924..e28694d99 100644
> --- a/drivers/i2c/muxes/i2c-mux-pca9541.c
> +++ b/drivers/i2c/muxes/i2c-mux-pca9541.c
> @@ -314,7 +314,7 @@ static int pca9541_probe(struct i2c_client *client)
>
> i2c_set_clientdata(client, muxc);
>
> - ret = i2c_mux_add_adapter(muxc, 0, 0, 0);
> + ret = i2c_mux_add_adapter(muxc, 0, 0);
> if (ret)
> return ret;
>
> diff --git a/drivers/i2c/muxes/i2c-mux-pca954x.c b/drivers/i2c/muxes/i2c-mux-pca954x.c
> index c3f4ff08a..6f8401825 100644
> --- a/drivers/i2c/muxes/i2c-mux-pca954x.c
> +++ b/drivers/i2c/muxes/i2c-mux-pca954x.c
> @@ -644,7 +644,7 @@ static int pca954x_probe(struct i2c_client *client)
>
> /* Now create an adapter for each channel */
> for (num = 0; num < data->chip->nchans; num++) {
> - ret = i2c_mux_add_adapter(muxc, 0, num, 0);
> + ret = i2c_mux_add_adapter(muxc, 0, num);
> if (ret)
> goto fail_cleanup;
> }
> diff --git a/drivers/i2c/muxes/i2c-mux-pinctrl.c b/drivers/i2c/muxes/i2c-mux-pinctrl.c
> index 6ebca7bfd..02aaf0781 100644
> --- a/drivers/i2c/muxes/i2c-mux-pinctrl.c
> +++ b/drivers/i2c/muxes/i2c-mux-pinctrl.c
> @@ -151,7 +151,7 @@ static int i2c_mux_pinctrl_probe(struct platform_device *pdev)
>
> /* Do not add any adapter for the idle state (if it's there at all). */
> for (i = 0; i < num_names - !!muxc->deselect; i++) {
> - ret = i2c_mux_add_adapter(muxc, 0, i, 0);
> + ret = i2c_mux_add_adapter(muxc, 0, i);
> if (ret)
> goto err_del_adapter;
> }
> diff --git a/drivers/i2c/muxes/i2c-mux-reg.c b/drivers/i2c/muxes/i2c-mux-reg.c
> index 8489971ba..ef765fcd3 100644
> --- a/drivers/i2c/muxes/i2c-mux-reg.c
> +++ b/drivers/i2c/muxes/i2c-mux-reg.c
> @@ -213,7 +213,7 @@ static int i2c_mux_reg_probe(struct platform_device *pdev)
> for (i = 0; i < mux->data.n_values; i++) {
> nr = mux->data.base_nr ? (mux->data.base_nr + i) : 0;
>
> - ret = i2c_mux_add_adapter(muxc, nr, mux->data.values[i], 0);
> + ret = i2c_mux_add_adapter(muxc, nr, mux->data.values[i]);
> if (ret)
> goto err_del_mux_adapters;
> }
> diff --git a/drivers/iio/gyro/mpu3050-i2c.c b/drivers/iio/gyro/mpu3050-i2c.c
> index 52b6feed2..29ecfa6fd 100644
> --- a/drivers/iio/gyro/mpu3050-i2c.c
> +++ b/drivers/iio/gyro/mpu3050-i2c.c
> @@ -72,7 +72,7 @@ static int mpu3050_i2c_probe(struct i2c_client *client)
> else {
> mpu3050->i2cmux->priv = mpu3050;
> /* Ignore failure, not critical */
> - i2c_mux_add_adapter(mpu3050->i2cmux, 0, 0, 0);
> + i2c_mux_add_adapter(mpu3050->i2cmux, 0, 0);
> }
>
> return 0;
> diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c
> index 410ea39fd..0e03137fb 100644
> --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c
> +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c
> @@ -142,7 +142,7 @@ static int inv_mpu_probe(struct i2c_client *client)
> if (!st->muxc)
> return -ENOMEM;
> st->muxc->priv = dev_get_drvdata(&client->dev);
> - result = i2c_mux_add_adapter(st->muxc, 0, 0, 0);
> + result = i2c_mux_add_adapter(st->muxc, 0, 0);
> if (result)
> return result;
> result = inv_mpu_acpi_create_mux_client(client);
> diff --git a/drivers/media/dvb-frontends/af9013.c b/drivers/media/dvb-frontends/af9013.c
> index a829c8979..5afdbe244 100644
> --- a/drivers/media/dvb-frontends/af9013.c
> +++ b/drivers/media/dvb-frontends/af9013.c
> @@ -1480,7 +1480,7 @@ static int af9013_probe(struct i2c_client *client)
> goto err_regmap_exit;
> }
> state->muxc->priv = state;
> - ret = i2c_mux_add_adapter(state->muxc, 0, 0, 0);
> + ret = i2c_mux_add_adapter(state->muxc, 0, 0);
> if (ret)
> goto err_regmap_exit;
>
> diff --git a/drivers/media/dvb-frontends/lgdt3306a.c b/drivers/media/dvb-frontends/lgdt3306a.c
> index 263887592..91c71b24c 100644
> --- a/drivers/media/dvb-frontends/lgdt3306a.c
> +++ b/drivers/media/dvb-frontends/lgdt3306a.c
> @@ -2203,7 +2203,7 @@ static int lgdt3306a_probe(struct i2c_client *client)
> goto err_kfree;
> }
> state->muxc->priv = client;
> - ret = i2c_mux_add_adapter(state->muxc, 0, 0, 0);
> + ret = i2c_mux_add_adapter(state->muxc, 0, 0);
> if (ret)
> goto err_kfree;
>
> diff --git a/drivers/media/dvb-frontends/m88ds3103.c b/drivers/media/dvb-frontends/m88ds3103.c
> index e0272054f..6c69bcc7a 100644
> --- a/drivers/media/dvb-frontends/m88ds3103.c
> +++ b/drivers/media/dvb-frontends/m88ds3103.c
> @@ -1866,7 +1866,7 @@ static int m88ds3103_probe(struct i2c_client *client)
> goto err_kfree;
> }
> dev->muxc->priv = dev;
> - ret = i2c_mux_add_adapter(dev->muxc, 0, 0, 0);
> + ret = i2c_mux_add_adapter(dev->muxc, 0, 0);
> if (ret)
> goto err_kfree;
>
> diff --git a/drivers/media/dvb-frontends/rtl2830.c b/drivers/media/dvb-frontends/rtl2830.c
> index 35c969fd2..30d10fe4b 100644
> --- a/drivers/media/dvb-frontends/rtl2830.c
> +++ b/drivers/media/dvb-frontends/rtl2830.c
> @@ -838,7 +838,7 @@ static int rtl2830_probe(struct i2c_client *client)
> goto err_regmap_exit;
> }
> dev->muxc->priv = client;
> - ret = i2c_mux_add_adapter(dev->muxc, 0, 0, 0);
> + ret = i2c_mux_add_adapter(dev->muxc, 0, 0);
> if (ret)
> goto err_regmap_exit;
>
> diff --git a/drivers/media/dvb-frontends/rtl2832.c b/drivers/media/dvb-frontends/rtl2832.c
> index 601cf45c3..5142820b1 100644
> --- a/drivers/media/dvb-frontends/rtl2832.c
> +++ b/drivers/media/dvb-frontends/rtl2832.c
> @@ -1082,7 +1082,7 @@ static int rtl2832_probe(struct i2c_client *client)
> goto err_regmap_exit;
> }
> dev->muxc->priv = dev;
> - ret = i2c_mux_add_adapter(dev->muxc, 0, 0, 0);
> + ret = i2c_mux_add_adapter(dev->muxc, 0, 0);
> if (ret)
> goto err_regmap_exit;
>
> diff --git a/drivers/media/dvb-frontends/si2168.c b/drivers/media/dvb-frontends/si2168.c
> index dae1f2153..26828fd41 100644
> --- a/drivers/media/dvb-frontends/si2168.c
> +++ b/drivers/media/dvb-frontends/si2168.c
> @@ -744,7 +744,7 @@ static int si2168_probe(struct i2c_client *client)
> goto err_kfree;
> }
> dev->muxc->priv = client;
> - ret = i2c_mux_add_adapter(dev->muxc, 0, 0, 0);
> + ret = i2c_mux_add_adapter(dev->muxc, 0, 0);
> if (ret)
> goto err_kfree;
>
> diff --git a/drivers/media/i2c/max9286.c b/drivers/media/i2c/max9286.c
> index d685d445c..dfcb3fc03 100644
> --- a/drivers/media/i2c/max9286.c
> +++ b/drivers/media/i2c/max9286.c
> @@ -383,7 +383,7 @@ static int max9286_i2c_mux_init(struct max9286_priv *priv)
> for_each_source(priv, source) {
> unsigned int index = to_index(priv, source);
>
> - ret = i2c_mux_add_adapter(priv->mux, 0, index, 0);
> + ret = i2c_mux_add_adapter(priv->mux, 0, index);
> if (ret < 0)
> goto error;
> }
> diff --git a/drivers/media/usb/cx231xx/cx231xx-i2c.c b/drivers/media/usb/cx231xx/cx231xx-i2c.c
> index c6659253c..6da8e7943 100644
> --- a/drivers/media/usb/cx231xx/cx231xx-i2c.c
> +++ b/drivers/media/usb/cx231xx/cx231xx-i2c.c
> @@ -567,10 +567,7 @@ int cx231xx_i2c_mux_create(struct cx231xx *dev)
>
> int cx231xx_i2c_mux_register(struct cx231xx *dev, int mux_no)
> {
> - return i2c_mux_add_adapter(dev->muxc,
> - 0,
> - mux_no /* chan_id */,
> - 0 /* class */);
> + return i2c_mux_add_adapter(dev->muxc, 0, mux_no);
> }
>
> void cx231xx_i2c_mux_unregister(struct cx231xx *dev)
> diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
> index 6b5c36b6a..c8ee866d7 100644
> --- a/drivers/of/unittest.c
> +++ b/drivers/of/unittest.c
> @@ -2815,7 +2815,7 @@ static int unittest_i2c_mux_probe(struct i2c_client *client)
> if (!muxc)
> return -ENOMEM;
> for (i = 0; i < nchans; i++) {
> - if (i2c_mux_add_adapter(muxc, 0, i, 0)) {
> + if (i2c_mux_add_adapter(muxc, 0, i)) {
> dev_err(dev, "Failed to register mux #%d\n", i);
> i2c_mux_del_adapters(muxc);
> return -ENODEV;
> diff --git a/include/linux/i2c-mux.h b/include/linux/i2c-mux.h
> index 98ef73b7c..1784ac7af 100644
> --- a/include/linux/i2c-mux.h
> +++ b/include/linux/i2c-mux.h
> @@ -56,8 +56,7 @@ struct i2c_adapter *i2c_root_adapter(struct device *dev);
> * callback functions to perform hardware-specific mux control.
> */
> int i2c_mux_add_adapter(struct i2c_mux_core *muxc,
> - u32 force_nr, u32 chan_id,
> - unsigned int class);
> + u32 force_nr, u32 chan_id);
>
> void i2c_mux_del_adapters(struct i2c_mux_core *muxc);
>
--
Regards,
Laurent Pinchart
