[PATCH v2] ssb: use put_device() if device_register fail

[PATCH v2] ssb: use put_device() if device_register fail

[Arvind Yadav]

Never directly free @dev after calling device_register(), even
if it returned an error! Always use put_device() to give up the
reference initialized.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
---
changes in v2:
             Removed kfree() call for @dev.

 drivers/ssb/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ssb/main.c b/drivers/ssb/main.c
index 65420a9..a7a062b 100644
--- a/drivers/ssb/main.c
+++ b/drivers/ssb/main.c
@@ -521,8 +521,8 @@ static int ssb_devices_register(struct ssb_bus *bus)
 			ssb_err("Could not register %s\n", dev_name(dev));
 			/* Set dev to NULL to not unregister
 			 * dev on error unwinding. */
+			put_device(dev);
 			sdev->dev = NULL;
-			kfree(devwrap);
 			goto error;
 		}
 		dev_idx++;
-- 
1.9.1

Re: [PATCH v2] ssb: use put_device() if device_register fail

[Michael Büsch]

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On Thu,  8 Mar 2018 10:39:49 +0530
Arvind Yadav <arvind.yadav.cs@gmail.com> wrote:

> Never directly free @dev after calling device_register(), even
> if it returned an error! Always use put_device() to give up the
> reference initialized.
> 
> Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
> ---
> changes in v2:
>              Removed kfree() call for @dev.
> 
>  drivers/ssb/main.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/ssb/main.c b/drivers/ssb/main.c
> index 65420a9..a7a062b 100644
> --- a/drivers/ssb/main.c
> +++ b/drivers/ssb/main.c
> @@ -521,8 +521,8 @@ static int ssb_devices_register(struct ssb_bus *bus)
>  			ssb_err("Could not register %s\n", dev_name(dev));
>  			/* Set dev to NULL to not unregister
>  			 * dev on error unwinding. */
> +			put_device(dev);
>  			sdev->dev = NULL;
> -			kfree(devwrap);
>  			goto error;
>  		}
>  		dev_idx++;


Would you please put the put_device where the kfree was?
So that the comment still matches.
Thanks.


-- 
Michael

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