2018-03-08 05:10:39

by Arvind Yadav

[permalink] [raw]

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

---

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 <[email protected]>
---
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

2018-03-08 06:12:20

by Michael Büsch

[permalink] [raw]

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

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On Thu, 8 Mar 2018 10:39:49 +0530
Arvind Yadav <[email protected]> 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 <[email protected]>
> ---
> 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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