* [PATCH] coresight: cti: Correct the parameter for pm_runtime_put
@ 2021-08-19 9:29 Tao Zhang
2021-08-29 14:28 ` Leo Yan
2021-09-02 17:18 ` Mathieu Poirier
0 siblings, 2 replies; 3+ messages in thread
From: Tao Zhang @ 2021-08-19 9:29 UTC (permalink / raw)
To: Mathieu Poirier, Suzuki K Poulose, Alexander Shishkin
Cc: Tao Zhang, Mike Leach, Leo Yan, Greg Kroah-Hartman, coresight,
linux-arm-kernel, linux-kernel, Tingwei Zhang, Mao Jinlong,
Yuanfang Zhang
The input parameter of the function pm_runtime_put should be the
same in the function cti_enable_hw and cti_disable_hw. The correct
parameter to use here should be dev->parent.
Signed-off-by: Tao Zhang <quic_taozha@quicinc.com>
---
drivers/hwtracing/coresight/coresight-cti-core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hwtracing/coresight/coresight-cti-core.c b/drivers/hwtracing/coresight/coresight-cti-core.c
index e2a3620..8988b2e 100644
--- a/drivers/hwtracing/coresight/coresight-cti-core.c
+++ b/drivers/hwtracing/coresight/coresight-cti-core.c
@@ -175,7 +175,7 @@ static int cti_disable_hw(struct cti_drvdata *drvdata)
coresight_disclaim_device_unlocked(csdev);
CS_LOCK(drvdata->base);
spin_unlock(&drvdata->spinlock);
- pm_runtime_put(dev);
+ pm_runtime_put(dev->parent);
return 0;
/* not disabled this call */
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] coresight: cti: Correct the parameter for pm_runtime_put
2021-08-19 9:29 [PATCH] coresight: cti: Correct the parameter for pm_runtime_put Tao Zhang
@ 2021-08-29 14:28 ` Leo Yan
2021-09-02 17:18 ` Mathieu Poirier
1 sibling, 0 replies; 3+ messages in thread
From: Leo Yan @ 2021-08-29 14:28 UTC (permalink / raw)
To: Tao Zhang
Cc: Mathieu Poirier, Suzuki K Poulose, Alexander Shishkin,
Mike Leach, Greg Kroah-Hartman, coresight, linux-arm-kernel,
linux-kernel, Tingwei Zhang, Mao Jinlong, Yuanfang Zhang
Hi Tao,
On Thu, Aug 19, 2021 at 05:29:37PM +0800, Tao Zhang wrote:
> The input parameter of the function pm_runtime_put should be the
> same in the function cti_enable_hw and cti_disable_hw. The correct
> parameter to use here should be dev->parent.
>
> Signed-off-by: Tao Zhang <quic_taozha@quicinc.com>
> ---
> drivers/hwtracing/coresight/coresight-cti-core.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/hwtracing/coresight/coresight-cti-core.c b/drivers/hwtracing/coresight/coresight-cti-core.c
> index e2a3620..8988b2e 100644
> --- a/drivers/hwtracing/coresight/coresight-cti-core.c
> +++ b/drivers/hwtracing/coresight/coresight-cti-core.c
> @@ -175,7 +175,7 @@ static int cti_disable_hw(struct cti_drvdata *drvdata)
> coresight_disclaim_device_unlocked(csdev);
> CS_LOCK(drvdata->base);
> spin_unlock(&drvdata->spinlock);
> - pm_runtime_put(dev);
> + pm_runtime_put(dev->parent);
coresight_register() allocates data structure 'coresight_device' and
assigns probed device to the field 'coresight_device::dev::parent';
thus afterwards we need to pass 'coresight_device::dev::parent' for
pm_runtime_xxx() functions. It's not directive for understanding, so
log the info at here.
For the patch:
Reviewed-by: Leo Yan <leo.yan@linaro.org>
We could wait for Mike to review as well.
Thanks,
Leo
> return 0;
>
> /* not disabled this call */
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] coresight: cti: Correct the parameter for pm_runtime_put
2021-08-19 9:29 [PATCH] coresight: cti: Correct the parameter for pm_runtime_put Tao Zhang
2021-08-29 14:28 ` Leo Yan
@ 2021-09-02 17:18 ` Mathieu Poirier
1 sibling, 0 replies; 3+ messages in thread
From: Mathieu Poirier @ 2021-09-02 17:18 UTC (permalink / raw)
To: Tao Zhang
Cc: Suzuki K Poulose, Alexander Shishkin, Mike Leach, Leo Yan,
Greg Kroah-Hartman, coresight, linux-arm-kernel, linux-kernel,
Tingwei Zhang, Mao Jinlong, Yuanfang Zhang
Hi Tao,
Apologies for the late reply - this patch fell through the cracks.
On Thu, Aug 19, 2021 at 05:29:37PM +0800, Tao Zhang wrote:
> The input parameter of the function pm_runtime_put should be the
> same in the function cti_enable_hw and cti_disable_hw. The correct
> parameter to use here should be dev->parent.
>
> Signed-off-by: Tao Zhang <quic_taozha@quicinc.com>
> ---
> drivers/hwtracing/coresight/coresight-cti-core.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/hwtracing/coresight/coresight-cti-core.c b/drivers/hwtracing/coresight/coresight-cti-core.c
> index e2a3620..8988b2e 100644
> --- a/drivers/hwtracing/coresight/coresight-cti-core.c
> +++ b/drivers/hwtracing/coresight/coresight-cti-core.c
> @@ -175,7 +175,7 @@ static int cti_disable_hw(struct cti_drvdata *drvdata)
> coresight_disclaim_device_unlocked(csdev);
> CS_LOCK(drvdata->base);
> spin_unlock(&drvdata->spinlock);
> - pm_runtime_put(dev);
> + pm_runtime_put(dev->parent);
You are correct - I have added this patch to my next tree.
Thanks,
Mathieu
> return 0;
>
> /* not disabled this call */
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 3+ messages in thread
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2021-08-29 14:28 ` Leo Yan
2021-09-02 17:18 ` Mathieu Poirier
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