Commit 6f6b35e1 authored by Jean Delvare's avatar Jean Delvare

macintosh: Don't assume i2c device probing always succeeds

If i2c device probing fails, then there is no driver to dereference
after calling i2c_new_device(). Stop assuming that probing will always
succeed, to avoid NULL pointer dereferences. We have an easier access
to the driver anyway.
Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
Tested-by: default avatarTim Shepard <shep@alum.mit.edu>
Cc: Colin Leroy <colin@colino.net>
parent 18669eab
......@@ -124,6 +124,8 @@ read_reg(struct thermostat* th, int reg)
return data;
}
static struct i2c_driver thermostat_driver;
static int
attach_thermostat(struct i2c_adapter *adapter)
{
......@@ -148,7 +150,7 @@ attach_thermostat(struct i2c_adapter *adapter)
* Let i2c-core delete that device on driver removal.
* This is safe because i2c-core holds the core_lock mutex for us.
*/
list_add_tail(&client->detected, &client->driver->clients);
list_add_tail(&client->detected, &thermostat_driver.clients);
return 0;
}
......
......@@ -286,6 +286,8 @@ struct fcu_fan_table fcu_fans[] = {
},
};
static struct i2c_driver therm_pm72_driver;
/*
* Utility function to create an i2c_client structure and
* attach it to one of u3 adapters
......@@ -318,7 +320,7 @@ static struct i2c_client *attach_i2c_chip(int id, const char *name)
* Let i2c-core delete that device on driver removal.
* This is safe because i2c-core holds the core_lock mutex for us.
*/
list_add_tail(&clt->detected, &clt->driver->clients);
list_add_tail(&clt->detected, &therm_pm72_driver.clients);
return clt;
}
......
......@@ -115,6 +115,8 @@ static int wf_lm75_probe(struct i2c_client *client,
return rc;
}
static struct i2c_driver wf_lm75_driver;
static struct i2c_client *wf_lm75_create(struct i2c_adapter *adapter,
u8 addr, int ds1775,
const char *loc)
......@@ -157,7 +159,7 @@ static struct i2c_client *wf_lm75_create(struct i2c_adapter *adapter,
* Let i2c-core delete that device on driver removal.
* This is safe because i2c-core holds the core_lock mutex for us.
*/
list_add_tail(&client->detected, &client->driver->clients);
list_add_tail(&client->detected, &wf_lm75_driver.clients);
return client;
fail:
return NULL;
......
......@@ -88,6 +88,8 @@ static int wf_max6690_probe(struct i2c_client *client,
return rc;
}
static struct i2c_driver wf_max6690_driver;
static struct i2c_client *wf_max6690_create(struct i2c_adapter *adapter,
u8 addr, const char *loc)
{
......@@ -119,7 +121,7 @@ static struct i2c_client *wf_max6690_create(struct i2c_adapter *adapter,
* Let i2c-core delete that device on driver removal.
* This is safe because i2c-core holds the core_lock mutex for us.
*/
list_add_tail(&client->detected, &client->driver->clients);
list_add_tail(&client->detected, &wf_max6690_driver.clients);
return client;
fail:
......
......@@ -194,6 +194,8 @@ static struct wf_sensor_ops wf_sat_ops = {
.owner = THIS_MODULE,
};
static struct i2c_driver wf_sat_driver;
static void wf_sat_create(struct i2c_adapter *adapter, struct device_node *dev)
{
struct i2c_board_info info;
......@@ -222,7 +224,7 @@ static void wf_sat_create(struct i2c_adapter *adapter, struct device_node *dev)
* Let i2c-core delete that device on driver removal.
* This is safe because i2c-core holds the core_lock mutex for us.
*/
list_add_tail(&client->detected, &client->driver->clients);
list_add_tail(&client->detected, &wf_sat_driver.clients);
}
static int wf_sat_probe(struct i2c_client *client,
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment