Hi Chanwoo.

On 04/18/2014 12:29 AM, Chanwoo Choi wrote:
Hi Sangjung,

Seung-Woo reviewed this patch previously but, He didn't send
reviewed-by message as reply.
After received reviewed-by message, I think that we should add it on
patch description.

Frankly speaking, I didn't know the basic acknowledge procedure of Linux Kernel development.
Thank you for your advice.

I will add the _reviewed-by_ message after I get it from Seung-woo.

BRs,
Sangjung

Thanks,
Chanwoo Choi

On Thu, Apr 17, 2014 at 7:10 PM, Sangjung Woo <[email protected]> wrote:
Use the resource-managed extcon device register function (i.e.
devm_extcon_dev_register()) instead of extcon_dev_register(). If extcon device
is attached with this function, that extcon device is automatically unregistered
on driver detach. That reduces tiresome managing code.

Signed-off-by: Sangjung Woo <[email protected]>
Reviewed-by: Seung-Woo Kim <[email protected]>
---
  drivers/extcon/extcon-arizona.c |   13 ++++---------
  1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
index 98a14f6..40e6c0b 100644
--- a/drivers/extcon/extcon-arizona.c
+++ b/drivers/extcon/extcon-arizona.c
@@ -1105,15 +1105,13 @@ static int arizona_extcon_probe(struct platform_device 
*pdev)
         info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
         if (!info) {
                 dev_err(&pdev->dev, "Failed to allocate memory\n");
-               ret = -ENOMEM;
-               goto err;
+               return -ENOMEM;
         }

         info->micvdd = devm_regulator_get(arizona->dev, "MICVDD");
         if (IS_ERR(info->micvdd)) {
-               ret = PTR_ERR(info->micvdd);
                 dev_err(arizona->dev, "Failed to get MICVDD: %d\n", ret);
-               goto err;
+               return PTR_ERR(info->micvdd);
         }

         mutex_init(&info->lock);
@@ -1155,11 +1153,11 @@ static int arizona_extcon_probe(struct platform_device 
*pdev)
         info->edev.dev.parent = arizona->dev;
         info->edev.supported_cable = arizona_cable;

-       ret = extcon_dev_register(&info->edev);
+       ret = devm_extcon_dev_register(&pdev->dev, &info->edev);
         if (ret < 0) {
                 dev_err(arizona->dev, "extcon_dev_register() failed: %d\n",
                         ret);
-               goto err;
+               return ret;
         }

         info->input = devm_input_allocate_device(&pdev->dev);
@@ -1410,8 +1408,6 @@ err_rise:
  err_input:
  err_register:
         pm_runtime_disable(&pdev->dev);
-       extcon_dev_unregister(&info->edev);
-err:
         return ret;
  }

@@ -1445,7 +1441,6 @@ static int arizona_extcon_remove(struct platform_device 
*pdev)
         regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE,
                            ARIZONA_JD1_ENA, 0);
         arizona_clk32k_disable(arizona);
-       extcon_dev_unregister(&info->edev);

         return 0;
  }
--
1.7.9.5

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