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Commit af80559b authored by Wolfram Sang's avatar Wolfram Sang Committed by Wolfram Sang
Browse files

i2c: replace i2c_new_secondary_device with an ERR_PTR variant 



In the general move to have i2c_new_*_device functions which return
ERR_PTR instead of NULL, this patch converts i2c_new_secondary_device().

There are only few users, so this patch converts the I2C core and all
users in one go. The function gets renamed to i2c_new_ancillary_device()
so out-of-tree users will get a build failure to understand they need to
adapt their error checking code.

Signed-off-by: default avatarWolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> # adv748x
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> # adv7511 + adv7604
Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> # adv7604
Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
parent bbeb6b6c

drivers/gpu/drm/bridge/adv7511/adv7511_drv.c

+9 −9
Original line number Diff line number Diff line
@@ -981,10 +981,10 @@ static int adv7511_init_cec_regmap(struct adv7511 *adv) 
{

	int ret;



	adv->i2c_cec = i2c_new_secondary_device(adv->i2c_main, "cec",

	adv->i2c_cec = i2c_new_ancillary_device(adv->i2c_main, "cec",

						ADV7511_CEC_I2C_ADDR_DEFAULT);

	if (!adv->i2c_cec)

		return -EINVAL;

	if (IS_ERR(adv->i2c_cec))

		return PTR_ERR(adv->i2c_cec);

	i2c_set_clientdata(adv->i2c_cec, adv);



	adv->regmap_cec = devm_regmap_init_i2c(adv->i2c_cec,
@@ -1165,20 +1165,20 @@ static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id) 


	adv7511_packet_disable(adv7511, 0xffff);



	adv7511->i2c_edid = i2c_new_secondary_device(i2c, "edid",

	adv7511->i2c_edid = i2c_new_ancillary_device(i2c, "edid",

					ADV7511_EDID_I2C_ADDR_DEFAULT);

	if (!adv7511->i2c_edid) {

		ret = -EINVAL;

	if (IS_ERR(adv7511->i2c_edid)) {

		ret = PTR_ERR(adv7511->i2c_edid);

		goto uninit_regulators;

	}



	regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR,

		     adv7511->i2c_edid->addr << 1);



	adv7511->i2c_packet = i2c_new_secondary_device(i2c, "packet",

	adv7511->i2c_packet = i2c_new_ancillary_device(i2c, "packet",

					ADV7511_PACKET_I2C_ADDR_DEFAULT);

	if (!adv7511->i2c_packet) {

		ret = -EINVAL;

	if (IS_ERR(adv7511->i2c_packet)) {

		ret = PTR_ERR(adv7511->i2c_packet);

		goto err_i2c_unregister_edid;

	}

drivers/i2c/i2c-core-base.c

+5 −5
Original line number Diff line number Diff line
@@ -964,7 +964,7 @@ struct i2c_client *devm_i2c_new_dummy_device(struct device *dev, 
EXPORT_SYMBOL_GPL(devm_i2c_new_dummy_device);



/**

 * i2c_new_secondary_device - Helper to get the instantiated secondary address

 * i2c_new_ancillary_device - Helper to get the instantiated secondary address

 * and create the associated device

 * @client: Handle to the primary client

 * @name: Handle to specify which secondary address to get
@@ -983,9 +983,9 @@ EXPORT_SYMBOL_GPL(devm_i2c_new_dummy_device); 
 * cell whose "reg-names" value matches the slave name.

 *

 * This returns the new i2c client, which should be saved for later use with

 * i2c_unregister_device(); or NULL to indicate an error.

 * i2c_unregister_device(); or an ERR_PTR to describe the error.

 */

struct i2c_client *i2c_new_secondary_device(struct i2c_client *client,

struct i2c_client *i2c_new_ancillary_device(struct i2c_client *client,

						const char *name,

						u16 default_addr)

{
@@ -1000,9 +1000,9 @@ struct i2c_client *i2c_new_secondary_device(struct i2c_client *client, 
	}



	dev_dbg(&client->adapter->dev, "Address for %s : 0x%x\n", name, addr);

	return i2c_new_dummy(client->adapter, addr);

	return i2c_new_dummy_device(client->adapter, addr);

}

EXPORT_SYMBOL_GPL(i2c_new_secondary_device);

EXPORT_SYMBOL_GPL(i2c_new_ancillary_device);



/* ------------------------------------------------------------------------- */

drivers/media/i2c/adv748x/adv748x-core.c

+3 −3
Original line number Diff line number Diff line
@@ -183,14 +183,14 @@ static int adv748x_initialise_clients(struct adv748x_state *state) 
	int ret;



	for (i = ADV748X_PAGE_DPLL; i < ADV748X_PAGE_MAX; ++i) {

		state->i2c_clients[i] = i2c_new_secondary_device(

		state->i2c_clients[i] = i2c_new_ancillary_device(

				state->client,

				adv748x_default_addresses[i].name,

				adv748x_default_addresses[i].default_addr);



		if (state->i2c_clients[i] == NULL) {

		if (IS_ERR(state->i2c_clients[i])) {

			adv_err(state, "failed to create i2c client %u\n", i);

			return -ENOMEM;

			return PTR_ERR(state->i2c_clients[i]);

		}



		ret = adv748x_configure_regmap(state, i);

drivers/media/i2c/adv7604.c

+12 −10
Original line number Diff line number Diff line
@@ -2862,11 +2862,9 @@ static void adv76xx_unregister_clients(struct adv76xx_state *state) 
{

	unsigned int i;



	for (i = 1; i < ARRAY_SIZE(state->i2c_clients); ++i) {

		if (state->i2c_clients[i])

	for (i = 1; i < ARRAY_SIZE(state->i2c_clients); ++i)

		i2c_unregister_device(state->i2c_clients[i]);

}

}



static struct i2c_client *adv76xx_dummy_client(struct v4l2_subdev *sd,

					       unsigned int page)
@@ -2878,14 +2876,14 @@ static struct i2c_client *adv76xx_dummy_client(struct v4l2_subdev *sd, 
	struct i2c_client *new_client;



	if (pdata && pdata->i2c_addresses[page])

		new_client = i2c_new_dummy(client->adapter,

		new_client = i2c_new_dummy_device(client->adapter,

					   pdata->i2c_addresses[page]);

	else

		new_client = i2c_new_secondary_device(client,

		new_client = i2c_new_ancillary_device(client,

				adv76xx_default_addresses[page].name,

				adv76xx_default_addresses[page].default_addr);



	if (new_client)

	if (!IS_ERR(new_client))

		io_write(sd, io_reg, new_client->addr << 1);



	return new_client;
@@ -3516,15 +3514,19 @@ static int adv76xx_probe(struct i2c_client *client, 
	}



	for (i = 1; i < ADV76XX_PAGE_MAX; ++i) {

		struct i2c_client *dummy_client;



		if (!(BIT(i) & state->info->page_mask))

			continue;



		state->i2c_clients[i] = adv76xx_dummy_client(sd, i);

		if (!state->i2c_clients[i]) {

			err = -EINVAL;

		dummy_client = adv76xx_dummy_client(sd, i);

		if (IS_ERR(dummy_client)) {

			err = PTR_ERR(dummy_client);

			v4l2_err(sd, "failed to create i2c client %u\n", i);

			goto err_i2c;

		}



		state->i2c_clients[i] = dummy_client;

	}



	INIT_DELAYED_WORK(&state->delayed_work_enable_hotplug,

include/linux/i2c.h

+1 −1
Original line number Diff line number Diff line
@@ -473,7 +473,7 @@ extern struct i2c_client * 
devm_i2c_new_dummy_device(struct device *dev, struct i2c_adapter *adap, u16 address);



extern struct i2c_client *

i2c_new_secondary_device(struct i2c_client *client,

i2c_new_ancillary_device(struct i2c_client *client,

				const char *name,

				u16 default_addr);