* [PATCH] scsi: zfcp: remove redundant put_device
@ 2018-09-06 6:16 Ding Xiang
2018-09-06 6:24 ` Heiko Carstens
0 siblings, 1 reply; 3+ messages in thread
From: Ding Xiang @ 2018-09-06 6:16 UTC (permalink / raw)
To: schwidefsky, heiko.carstens, linux-s390, linux-kernel
device_unregister will put device, do not need to do it one more time
Signed-off-by: Ding Xiang <dingxiang@cmss.chinamobile.com>
---
drivers/s390/scsi/zfcp_unit.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/s390/scsi/zfcp_unit.c b/drivers/s390/scsi/zfcp_unit.c
index 1bf0a09..6b50084 100644
--- a/drivers/s390/scsi/zfcp_unit.c
+++ b/drivers/s390/scsi/zfcp_unit.c
@@ -249,8 +249,6 @@ int zfcp_unit_remove(struct zfcp_port *port, u64 fcp_lun)
scsi_device_put(sdev);
}
- put_device(&unit->dev);
-
device_unregister(&unit->dev);
return 0;
--
1.9.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] scsi: zfcp: remove redundant put_device
2018-09-06 6:16 [PATCH] scsi: zfcp: remove redundant put_device Ding Xiang
@ 2018-09-06 6:24 ` Heiko Carstens
2018-09-06 6:43 ` Ding Xiang
0 siblings, 1 reply; 3+ messages in thread
From: Heiko Carstens @ 2018-09-06 6:24 UTC (permalink / raw)
To: Ding Xiang
Cc: schwidefsky, linux-s390, linux-kernel, Steffen Maier, Benjamin Block
On Thu, Sep 06, 2018 at 02:16:27PM +0800, Ding Xiang wrote:
> device_unregister will put device, do not need to do it one more time
>
> Signed-off-by: Ding Xiang <dingxiang@cmss.chinamobile.com>
> ---
> drivers/s390/scsi/zfcp_unit.c | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/drivers/s390/scsi/zfcp_unit.c b/drivers/s390/scsi/zfcp_unit.c
> index 1bf0a09..6b50084 100644
> --- a/drivers/s390/scsi/zfcp_unit.c
> +++ b/drivers/s390/scsi/zfcp_unit.c
> @@ -249,8 +249,6 @@ int zfcp_unit_remove(struct zfcp_port *port, u64 fcp_lun)
> scsi_device_put(sdev);
> }
>
> - put_device(&unit->dev);
> -
> device_unregister(&unit->dev);
>
> return 0;
I'm quite sure this change is wrong, since the put_device() here seems to
pair with the get_device() in _zfcp_unit_find(). So we would end up with a
memory leak.
Adding Steffen and Benjamin.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] scsi: zfcp: remove redundant put_device
2018-09-06 6:24 ` Heiko Carstens
@ 2018-09-06 6:43 ` Ding Xiang
0 siblings, 0 replies; 3+ messages in thread
From: Ding Xiang @ 2018-09-06 6:43 UTC (permalink / raw)
To: Heiko Carstens
Cc: schwidefsky, linux-s390, linux-kernel, Steffen Maier, Benjamin Block
On 9/6/2018 2:24 PM, Heiko Carstens wrote:
> On Thu, Sep 06, 2018 at 02:16:27PM +0800, Ding Xiang wrote:
>> device_unregister will put device, do not need to do it one more time
>>
>> Signed-off-by: Ding Xiang <dingxiang@cmss.chinamobile.com>
>> ---
>> drivers/s390/scsi/zfcp_unit.c | 2 --
>> 1 file changed, 2 deletions(-)
>>
>> diff --git a/drivers/s390/scsi/zfcp_unit.c b/drivers/s390/scsi/zfcp_unit.c
>> index 1bf0a09..6b50084 100644
>> --- a/drivers/s390/scsi/zfcp_unit.c
>> +++ b/drivers/s390/scsi/zfcp_unit.c
>> @@ -249,8 +249,6 @@ int zfcp_unit_remove(struct zfcp_port *port, u64 fcp_lun)
>> scsi_device_put(sdev);
>> }
>>
>> - put_device(&unit->dev);
>> -
>> device_unregister(&unit->dev);
>>
>> return 0;
> I'm quite sure this change is wrong, since the put_device() here seems to
> pair with the get_device() in _zfcp_unit_find(). So we would end up with a
> memory leak.
Indeed，please ignore this patch.
> Adding Steffen and Benjamin.
>
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2018-09-06 6:43 UTC | newest]
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2018-09-06 6:16 [PATCH] scsi: zfcp: remove redundant put_device Ding Xiang
2018-09-06 6:24 ` Heiko Carstens
2018-09-06 6:43 ` Ding Xiang
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