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Code Issues Releases Wiki Activity

i3c: remove i2c board info from i2c_dev_desc 

I2C board info is only required during adapter setup so there is no
requirement to keeping a pointer to it once running.  To support dynamic
device addition we can't rely on board info - user-space creation
through sysfs won't have a boardinfo.

Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Jamie Iles <quic_jiles@quicinc.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20220117174816.1963463-2-quic_jiles@quicinc.com
This commit is contained in:
Jamie Iles 2022-01-17 17:48:15 +00:00 committed by Alexandre Belloni
parent e783362eb5
commit 31b9887c72
2 changed files with 10 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/i3c/master.c
View File

@ -609,7 +609,7 @@ static void i3c_master_free_i2c_dev(struct i2c_dev_desc *dev)
static struct i2c_dev_desc *
i3c_master_alloc_i2c_dev(struct i3c_master_controller *master,
const struct i2c_dev_boardinfo *boardinfo)
u16 addr, u8 lvr)
{
struct i2c_dev_desc *dev;
@ -618,9 +618,8 @@ i3c_master_alloc_i2c_dev(struct i3c_master_controller *master,
return ERR_PTR(-ENOMEM);
dev->common.master = master;
dev->boardinfo = boardinfo;
dev->addr = boardinfo->base.addr;
dev->lvr = boardinfo->lvr;
dev->addr = addr;
dev->lvr = lvr;
return dev;
}
@ -694,7 +693,7 @@ i3c_master_find_i2c_dev_by_addr(const struct i3c_master_controller *master,
struct i2c_dev_desc *dev;
i3c_bus_for_each_i2cdev(&master->bus, dev) {
if (dev->boardinfo->base.addr == addr)
if (dev->addr == addr)
return dev;
}
@ -1689,7 +1688,9 @@ static int i3c_master_bus_init(struct i3c_master_controller *master)
i2cboardinfo->base.addr,
I3C_ADDR_SLOT_I2C_DEV);
i2cdev = i3c_master_alloc_i2c_dev(master, i2cboardinfo);
i2cdev = i3c_master_alloc_i2c_dev(master,
i2cboardinfo->base.addr,
i2cboardinfo->lvr);
if (IS_ERR(i2cdev)) {
ret = PTR_ERR(i2cdev);
goto err_detach_devs;
@ -2175,6 +2176,7 @@ static int i3c_master_i2c_adapter_init(struct i3c_master_controller *master)
{
struct i2c_adapter *adap = i3c_master_to_i2c_adapter(master);
struct i2c_dev_desc *i2cdev;
struct i2c_dev_boardinfo *i2cboardinfo;
int ret;
adap->dev.parent = master->dev.parent;
@ -2194,8 +2196,8 @@ static int i3c_master_i2c_adapter_init(struct i3c_master_controller *master)
* We silently ignore failures here. The bus should keep working
* correctly even if one or more i2c devices are not registered.
*/
i3c_bus_for_each_i2cdev(&master->bus, i2cdev)
i2cdev->dev = i2c_new_client_device(adap, &i2cdev->boardinfo->base);
list_for_each_entry(i2cboardinfo, &master->boardinfo.i2c, node)
i2cdev->dev = i2c_new_client_device(adap, &i2cboardinfo->base);
return 0;
}

1
include/linux/i3c/master.h
View File

@ -85,7 +85,6 @@ struct i2c_dev_boardinfo {
*/
struct i2c_dev_desc {
struct i3c_i2c_dev_desc common;
const struct i2c_dev_boardinfo *boardinfo;
struct i2c_client *dev;
u16 addr;
u8 lvr;