diff options
| author | Stephen Kitt <steve@sk2.org> | 2020-08-08 23:00:04 +0200 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2020-09-23 09:42:39 -0700 |
| commit | dd43193976b9a7b2affe8fb71780bb96d16a8449 (patch) | |
| tree | 91a68a368fe89780c92d550f97c7e557ec949b58 /drivers/hwmon/pmbus/max34440.c | |
| parent | e40358390928f9ab9d8d7dde5c60c08981dc1d81 (diff) | |
| download | linux-dd43193976b9a7b2affe8fb71780bb96d16a8449.tar.bz2 | |
hwmon (pmbus) use simple i2c probe function
pmbus_do_probe doesn't use the id information provided in its second
argument, so this can be removed, which then allows using the
single-parameter i2c probe function ("probe_new") for probes.
This avoids scanning the identifier tables during probes.
Drivers which didn't use the id are converted as-is; drivers which did
are modified as follows:
* if the information in i2c_client is sufficient, that's used instead
(client->name);
* configured v. probed comparisons are performed by comparing the
configured name to the detected name, instead of the ids; this
involves strcmp but is still cheaper than comparing all the device
names when scanning the tables;
* anything else is handled by calling i2c_match_id() with the same
level of error-handling (if any) as before.
Additionally, the mismatch message in the ltc2978 driver is adjusted
so that it no longer assumes that the driver_data is an index into
ltc2978_id.
Signed-off-by: Stephen Kitt <steve@sk2.org>
Acked-by: Wolfram Sang <wsa@kernel.org>
Link: https://lore.kernel.org/r/20200808210004.30880-1-steve@sk2.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon/pmbus/max34440.c')
| -rw-r--r-- | drivers/hwmon/pmbus/max34440.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/hwmon/pmbus/max34440.c b/drivers/hwmon/pmbus/max34440.c index de04dff28945..8ea31b59f8e8 100644 --- a/drivers/hwmon/pmbus/max34440.c +++ b/drivers/hwmon/pmbus/max34440.c @@ -41,6 +41,8 @@ struct max34440_data { #define to_max34440_data(x) container_of(x, struct max34440_data, info) +static const struct i2c_device_id max34440_id[]; + static int max34440_read_word_data(struct i2c_client *client, int page, int phase, int reg) { @@ -458,8 +460,7 @@ static struct pmbus_driver_info max34440_info[] = { }, }; -static int max34440_probe(struct i2c_client *client, - const struct i2c_device_id *id) +static int max34440_probe(struct i2c_client *client) { struct max34440_data *data; int rv; @@ -468,8 +469,8 @@ static int max34440_probe(struct i2c_client *client, GFP_KERNEL); if (!data) return -ENOMEM; - data->id = id->driver_data; - data->info = max34440_info[id->driver_data]; + data->id = i2c_match_id(max34440_id, client)->driver_data; + data->info = max34440_info[data->id]; if (data->id == max34451) { rv = max34451_set_supported_funcs(client, data); @@ -477,7 +478,7 @@ static int max34440_probe(struct i2c_client *client, return rv; } - return pmbus_do_probe(client, id, &data->info); + return pmbus_do_probe(client, &data->info); } static const struct i2c_device_id max34440_id[] = { @@ -496,7 +497,7 @@ static struct i2c_driver max34440_driver = { .driver = { .name = "max34440", }, - .probe = max34440_probe, + .probe_new = max34440_probe, .remove = pmbus_do_remove, .id_table = max34440_id, }; |