power: convert to idr_alloc()

Convert to the much saner new idr interface.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Anton Vorontsov <cbou@mail.ru>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/power/bq2415x_charger.c b/drivers/power/bq2415x_charger.c
index ca91396..0727f92 100644 (file)
--- a/drivers/power/bq2415x_charger.c
+++ b/drivers/power/bq2415x_charger.c
@@ -1515,16 +1515,11 @@ static int bq2415x_probe(struct i2c_client *client,
        }
 
        /* Get new ID for the new device */
-       ret = idr_pre_get(&bq2415x_id, GFP_KERNEL);
-       if (ret == 0)
-               return -ENOMEM;
-
        mutex_lock(&bq2415x_id_mutex);
-       ret = idr_get_new(&bq2415x_id, client, &num);
+       num = idr_alloc(&bq2415x_id, client, 0, 0, GFP_KERNEL);
        mutex_unlock(&bq2415x_id_mutex);
-
-       if (ret < 0)
-               return ret;
+       if (num < 0)
+               return num;
 
        name = kasprintf(GFP_KERNEL, "%s-%d", id->name, num);
        if (!name) {

diff --git a/drivers/power/bq27x00_battery.c b/drivers/power/bq27x00_battery.c
index 8ccf5d7..26037ca 100644 (file)
--- a/drivers/power/bq27x00_battery.c
+++ b/drivers/power/bq27x00_battery.c
@@ -791,14 +791,11 @@ static int bq27x00_battery_probe(struct i2c_client *client,
        int retval = 0;
 
        /* Get new ID for the new battery device */
-       retval = idr_pre_get(&battery_id, GFP_KERNEL);
-       if (retval == 0)
-               return -ENOMEM;
        mutex_lock(&battery_mutex);
-       retval = idr_get_new(&battery_id, client, &num);
+       num = idr_alloc(&battery_id, client, 0, 0, GFP_KERNEL);
        mutex_unlock(&battery_mutex);
-       if (retval < 0)
-               return retval;
+       if (num < 0)
+               return num;
 
        name = kasprintf(GFP_KERNEL, "%s-%d", id->name, num);
        if (!name) {

diff --git a/drivers/power/ds2782_battery.c b/drivers/power/ds2782_battery.c
index e7301b3..c09e772 100644 (file)
--- a/drivers/power/ds2782_battery.c
+++ b/drivers/power/ds2782_battery.c
@@ -395,17 +395,12 @@ static int ds278x_battery_probe(struct i2c_client *client,
        }
 
        /* Get an ID for this battery */
-       ret = idr_pre_get(&battery_id, GFP_KERNEL);
-       if (ret == 0) {
-               ret = -ENOMEM;
-               goto fail_id;
-       }
-
        mutex_lock(&battery_lock);
-       ret = idr_get_new(&battery_id, client, &num);
+       ret = idr_alloc(&battery_id, client, 0, 0, GFP_KERNEL);
        mutex_unlock(&battery_lock);
        if (ret < 0)
                goto fail_id;
+       num = ret;
 
        info = kzalloc(sizeof(*info), GFP_KERNEL);
        if (!info) {