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ds2782_battery: Get rid of magic numbers in driver_data

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Constructions like 'if (id->driver_data == 1)' look quite weird.
This patch introduces 'enum ds278x_num_id', which makes things
much more understandable, i.e. 'if (id->driver_data == DS2786)'.

Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Acked-by: Mike Rapoport <mike@compulab.co.il>
This commit is contained in:
Anton Vorontsov 2010-04-26 22:10:52 +04:00
parent 9b9ade6b61
commit ab6cc8f9b7
1 changed files with 11 additions and 6 deletions
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17
drivers/power/ds2782_battery.c
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@ -300,13 +300,18 @@ static int ds278x_battery_remove(struct i2c_client *client)
return 0;
}
enum ds278x_num_id {
DS2782 = 0,
DS2786,
};
static struct ds278x_battery_ops ds278x_ops[] = {
[0] = {
[DS2782] = {
.get_current = ds2782_get_current,
.get_voltage = ds2782_get_voltage,
.get_capacity = ds2782_get_capacity,
},
[1] = {
[DS2786] = {
.get_current = ds2786_get_current,
.get_voltage = ds2786_get_voltage,
.get_capacity = ds2786_get_capacity,
@ -325,7 +330,7 @@ static int ds278x_battery_probe(struct i2c_client *client,
* ds2786 should have the sense resistor value set
* in the platform data
*/
if (id->driver_data == 1 && !pdata) {
if (id->driver_data == DS2786 && !pdata) {
dev_err(&client->dev, "missing platform data for ds2786\n");
return -EINVAL;
}
@ -355,7 +360,7 @@ static int ds278x_battery_probe(struct i2c_client *client,
goto fail_name;
}
if (id->driver_data == 1)
if (id->driver_data == DS2786)
info->rsns = pdata->rsns;
i2c_set_clientdata(client, info);
@ -385,8 +390,8 @@ static int ds278x_battery_probe(struct i2c_client *client,
}
static const struct i2c_device_id ds278x_id[] = {
{"ds2782", 0},
{"ds2786", 1},
{"ds2782", DS2782},
{"ds2786", DS2786},
{},
};