@@ -88,8 +88,7 @@
#define AEM_MIN_POWER_INTERVAL 200
#define UJ_PER_MJ 1000L
-static DEFINE_IDR(aem_idr);
-static DEFINE_SPINLOCK(aem_idr_lock);
+static DEFINE_IDA(aem_ida);
static struct platform_driver aem_driver = {
.driver = {
@@ -356,38 +355,6 @@ static void aem_msg_handler(struct ipmi_recv_msg *msg, void *user_msg_data)
complete(&data->read_complete);
}
-/* ID functions */
-
-/* Obtain an id */
-static int aem_idr_get(int *id)
-{
- int i, err;
-
-again:
- if (unlikely(!idr_pre_get(&aem_idr, GFP_KERNEL)))
- return -ENOMEM;
-
- spin_lock(&aem_idr_lock);
- err = idr_get_new(&aem_idr, NULL, &i);
- spin_unlock(&aem_idr_lock);
-
- if (unlikely(err == -EAGAIN))
- goto again;
- else if (unlikely(err))
- return err;
-
- *id = i & MAX_ID_MASK;
- return 0;
-}
-
-/* Release an object ID */
-static void aem_idr_put(int id)
-{
- spin_lock(&aem_idr_lock);
- idr_remove(&aem_idr, id);
- spin_unlock(&aem_idr_lock);
-}
-
/* Sensor support functions */
/* Read a sensor value */
@@ -525,7 +492,7 @@ static void aem_delete(struct aem_data *data)
ipmi_destroy_user(data->ipmi.user);
platform_set_drvdata(data->pdev, NULL);
platform_device_unregister(data->pdev);
- aem_idr_put(data->id);
+ ida_simple_remove(&aem_ida, data->id);
kfree(data);
}
@@ -582,7 +549,8 @@ static int aem_init_aem1_inst(struct aem_ipmi_data *probe, u8 module_handle)
data->power_period[i] = AEM_DEFAULT_POWER_INTERVAL;
/* Create sub-device for this fw instance */
- if (aem_idr_get(&data->id))
+ data->id = ida_simple_get(&aem_ida, 0, 0, GFP_KERNEL);
+ if (data->id < 0)
goto id_err;
data->pdev = platform_device_alloc(DRVNAME, data->id);
@@ -633,7 +601,7 @@ ipmi_err:
platform_set_drvdata(data->pdev, NULL);
platform_device_unregister(data->pdev);
dev_err:
- aem_idr_put(data->id);
+ ida_simple_remove(&aem_ida, data->id);
id_err:
kfree(data);
@@ -715,7 +683,8 @@ static int aem_init_aem2_inst(struct aem_ipmi_data *probe,
data->power_period[i] = AEM_DEFAULT_POWER_INTERVAL;
/* Create sub-device for this fw instance */
- if (aem_idr_get(&data->id))
+ data->id = ida_simple_get(&aem_ida, 0, 0, GFP_KERNEL);
+ if (data->id < 0)
goto id_err;
data->pdev = platform_device_alloc(DRVNAME, data->id);
@@ -766,7 +735,7 @@ ipmi_err:
platform_set_drvdata(data->pdev, NULL);
platform_device_unregister(data->pdev);
dev_err:
- aem_idr_put(data->id);
+ ida_simple_remove(&aem_ida, data->id);
id_err:
kfree(data);
A straightforward looking use of idr for a device id. Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk> --- Note I have even build tested this one so will definitely want an Ack from someone who has. drivers/hwmon/ibmaem.c | 47 ++++++++--------------------------------------- 1 files changed, 8 insertions(+), 39 deletions(-)