extcon: adc-jack: Use devm_extcon_dev_allocate for extcon_dev

This patch use devm_extcon_dev_allocate() to simplify the memory control
of extcon device.

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>

1 files changed, 12 insertions, 9 deletions

diff --git a/drivers/extcon/extcon-adc-jack.c b/drivers/extcon/extcon-adc-jack.c
index 549d8207aacf..e18f95be3733 100644
--- a/drivers/extcon/extcon-adc-jack.c
+++ b/drivers/extcon/extcon-adc-jack.c
@@ -39,7 +39,7 @@
  * @chan:               iio channel being queried.
  */
 struct adc_jack_data {
-        struct extcon_dev edev;
+        struct extcon_dev *edev;
 
         const char **cable_names;
         int num_cables;
@@ -64,7 +64,7 @@ static void adc_jack_handler(struct work_struct *work)
 
         ret = iio_read_channel_raw(data->chan, &adc_val);
         if (ret < 0) {
-                dev_err(&data->edev.dev, "read channel() error: %d\n", ret);
+                dev_err(&data->edev->dev, "read channel() error: %d\n", ret);
                 return;
         }
 
@@ -80,7 +80,7 @@ static void adc_jack_handler(struct work_struct *work)
         }
         /* if no def has met, it means state = 0 (no cables attached) */
 
-        extcon_set_state(&data->edev, state);
+        extcon_set_state(data->edev, state);
 }
 
 static irqreturn_t adc_jack_irq_thread(int irq, void *_data)
@@ -102,18 +102,21 @@ static int adc_jack_probe(struct platform_device *pdev)
         if (!data)
                 return -ENOMEM;
 
-        data->edev.name = pdata->name;
-
         if (!pdata->cable_names) {
                 dev_err(&pdev->dev, "error: cable_names not defined.\n");
                 return -EINVAL;
         }
 
-        data->edev.dev.parent = &pdev->dev;
-        data->edev.supported_cable = pdata->cable_names;
+        data->edev = devm_extcon_dev_allocate(&pdev->dev, pdata->cable_names);
+        if (IS_ERR(data->edev)) {
+                dev_err(&pdev->dev, "failed to allocate extcon device\n");
+                return -ENOMEM;
+        }
+        data->edev->dev.parent = &pdev->dev;
+        data->edev->name = pdata->name;
 
         /* Check the length of array and set num_cables */
-        for (i = 0; data->edev.supported_cable[i]; i++)
+        for (i = 0; data->edev->supported_cable[i]; i++)
                 ;
         if (i == 0 || i > SUPPORTED_CABLE_MAX) {
                 dev_err(&pdev->dev, "error: pdata->cable_names size = %d\n",
@@ -144,7 +147,7 @@ static int adc_jack_probe(struct platform_device *pdev)
 
         platform_set_drvdata(pdev, data);
 
-        err = devm_extcon_dev_register(&pdev->dev, &data->edev);
+        err = devm_extcon_dev_register(&pdev->dev, data->edev);
         if (err)
                 return err;