All of lore.kernel.org
 help / color / mirror / Atom feed
* [PATCH v2] can: m_can: Fix runtime resume call
@ 2018-07-03 11:11 ` Faiz Abbas
  0 siblings, 0 replies; 5+ messages in thread
From: Faiz Abbas @ 2018-07-03 11:11 UTC (permalink / raw)
  To: linux-kernel, netdev, linux-can, linux-omap; +Cc: wg, mkl, davem, faiz_abbas

pm_runtime_get_sync() returns a 1 if the state of the device is already
'active'. This is not a failure case and should return a success.

Therefore fix error handling for pm_runtime_get_sync() call such that
it returns success when the value is 1.

Also cleanup the TODO for using runtime PM for sleep mode as that is
implemented.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
---

Changes in v2:

rebased to latest mainline

 drivers/net/can/m_can/m_can.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c
index b397a33f3d32..ac4c6dc2f8c8 100644
--- a/drivers/net/can/m_can/m_can.c
+++ b/drivers/net/can/m_can/m_can.c
@@ -634,10 +634,12 @@ static int m_can_clk_start(struct m_can_priv *priv)
 	int err;
 
 	err = pm_runtime_get_sync(priv->device);
-	if (err)
+	if (err < 0) {
 		pm_runtime_put_noidle(priv->device);
+		return err;
+	}
 
-	return err;
+	return 0;
 }
 
 static void m_can_clk_stop(struct m_can_priv *priv)
@@ -1687,8 +1689,6 @@ static int m_can_plat_probe(struct platform_device *pdev)
 	return ret;
 }
 
-/* TODO: runtime PM with power down or sleep mode  */
-
 static __maybe_unused int m_can_suspend(struct device *dev)
 {
 	struct net_device *ndev = dev_get_drvdata(dev);
-- 
2.17.0

^ permalink raw reply related	[flat|nested] 5+ messages in thread
* [PATCH v2] can: m_can: Fix runtime resume call
@ 2018-07-03 11:11 ` Faiz Abbas
  0 siblings, 0 replies; 5+ messages in thread
From: Faiz Abbas @ 2018-07-03 11:11 UTC (permalink / raw)
  To: linux-kernel, netdev, linux-can, linux-omap; +Cc: wg, mkl, davem, faiz_abbas

pm_runtime_get_sync() returns a 1 if the state of the device is already
'active'. This is not a failure case and should return a success.

Therefore fix error handling for pm_runtime_get_sync() call such that
it returns success when the value is 1.

Also cleanup the TODO for using runtime PM for sleep mode as that is
implemented.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
---

Changes in v2:

rebased to latest mainline

 drivers/net/can/m_can/m_can.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c
index b397a33f3d32..ac4c6dc2f8c8 100644
--- a/drivers/net/can/m_can/m_can.c
+++ b/drivers/net/can/m_can/m_can.c
@@ -634,10 +634,12 @@ static int m_can_clk_start(struct m_can_priv *priv)
 	int err;
 
 	err = pm_runtime_get_sync(priv->device);
-	if (err)
+	if (err < 0) {
 		pm_runtime_put_noidle(priv->device);
+		return err;
+	}
 
-	return err;
+	return 0;
 }
 
 static void m_can_clk_stop(struct m_can_priv *priv)
@@ -1687,8 +1689,6 @@ static int m_can_plat_probe(struct platform_device *pdev)
 	return ret;
 }
 
-/* TODO: runtime PM with power down or sleep mode  */
-
 static __maybe_unused int m_can_suspend(struct device *dev)
 {
 	struct net_device *ndev = dev_get_drvdata(dev);
-- 
2.17.0


^ permalink raw reply related	[flat|nested] 5+ messages in thread
* Re: [PATCH v2] can: m_can: Fix runtime resume call
  2018-07-03 11:11 ` Faiz Abbas
@ 2018-07-10 11:36   ` Faiz Abbas
  -1 siblings, 0 replies; 5+ messages in thread
From: Faiz Abbas @ 2018-07-10 11:36 UTC (permalink / raw)
  To: linux-kernel, netdev, linux-can, linux-omap; +Cc: wg, mkl, davem

Hi,

On Tuesday 03 July 2018 04:41 PM, Faiz Abbas wrote:
> pm_runtime_get_sync() returns a 1 if the state of the device is already
> 'active'. This is not a failure case and should return a success.
> 
> Therefore fix error handling for pm_runtime_get_sync() call such that
> it returns success when the value is 1.
> 
> Also cleanup the TODO for using runtime PM for sleep mode as that is
> implemented.
> 
> Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
> ---
> 
> Changes in v2:
> 
> rebased to latest mainline
> 
>  drivers/net/can/m_can/m_can.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c
> index b397a33f3d32..ac4c6dc2f8c8 100644
> --- a/drivers/net/can/m_can/m_can.c
> +++ b/drivers/net/can/m_can/m_can.c
> @@ -634,10 +634,12 @@ static int m_can_clk_start(struct m_can_priv *priv)
>  	int err;
>  
>  	err = pm_runtime_get_sync(priv->device);
> -	if (err)
> +	if (err < 0) {
>  		pm_runtime_put_noidle(priv->device);
> +		return err;
> +	}
>  
> -	return err;
> +	return 0;
>  }
>  
>  static void m_can_clk_stop(struct m_can_priv *priv)
> @@ -1687,8 +1689,6 @@ static int m_can_plat_probe(struct platform_device *pdev)
>  	return ret;
>  }
>  
> -/* TODO: runtime PM with power down or sleep mode  */
> -
>  static __maybe_unused int m_can_suspend(struct device *dev)
>  {
>  	struct net_device *ndev = dev_get_drvdata(dev);
> 

Gentle ping.

Thanks,
Faiz

^ permalink raw reply	[flat|nested] 5+ messages in thread
* Re: [PATCH v2] can: m_can: Fix runtime resume call
@ 2018-07-10 11:36   ` Faiz Abbas
  0 siblings, 0 replies; 5+ messages in thread
From: Faiz Abbas @ 2018-07-10 11:36 UTC (permalink / raw)
  To: linux-kernel, netdev, linux-can, linux-omap; +Cc: wg, mkl, davem

Hi,

On Tuesday 03 July 2018 04:41 PM, Faiz Abbas wrote:
> pm_runtime_get_sync() returns a 1 if the state of the device is already
> 'active'. This is not a failure case and should return a success.
> 
> Therefore fix error handling for pm_runtime_get_sync() call such that
> it returns success when the value is 1.
> 
> Also cleanup the TODO for using runtime PM for sleep mode as that is
> implemented.
> 
> Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
> ---
> 
> Changes in v2:
> 
> rebased to latest mainline
> 
>  drivers/net/can/m_can/m_can.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c
> index b397a33f3d32..ac4c6dc2f8c8 100644
> --- a/drivers/net/can/m_can/m_can.c
> +++ b/drivers/net/can/m_can/m_can.c
> @@ -634,10 +634,12 @@ static int m_can_clk_start(struct m_can_priv *priv)
>  	int err;
>  
>  	err = pm_runtime_get_sync(priv->device);
> -	if (err)
> +	if (err < 0) {
>  		pm_runtime_put_noidle(priv->device);
> +		return err;
> +	}
>  
> -	return err;
> +	return 0;
>  }
>  
>  static void m_can_clk_stop(struct m_can_priv *priv)
> @@ -1687,8 +1689,6 @@ static int m_can_plat_probe(struct platform_device *pdev)
>  	return ret;
>  }
>  
> -/* TODO: runtime PM with power down or sleep mode  */
> -
>  static __maybe_unused int m_can_suspend(struct device *dev)
>  {
>  	struct net_device *ndev = dev_get_drvdata(dev);
> 

Gentle ping.

Thanks,
Faiz

^ permalink raw reply	[flat|nested] 5+ messages in thread
* Re: [PATCH v2] can: m_can: Fix runtime resume call
  2018-07-03 11:11 ` Faiz Abbas
  (?)
  (?)
@ 2018-07-23  8:05 ` Marc Kleine-Budde
  -1 siblings, 0 replies; 5+ messages in thread
From: Marc Kleine-Budde @ 2018-07-23  8:05 UTC (permalink / raw)
  To: Faiz Abbas, linux-kernel, netdev, linux-can, linux-omap; +Cc: wg, davem


[-- Attachment #1.1: Type: text/plain, Size: 768 bytes --]

On 07/03/2018 01:11 PM, Faiz Abbas wrote:
> pm_runtime_get_sync() returns a 1 if the state of the device is already
> 'active'. This is not a failure case and should return a success.
> 
> Therefore fix error handling for pm_runtime_get_sync() call such that
> it returns success when the value is 1.
> 
> Also cleanup the TODO for using runtime PM for sleep mode as that is
> implemented.
> 
> Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>

Applied to linux-can.

Tnx,
Marc

-- 
Pengutronix e.K.                  | Marc Kleine-Budde           |
Industrial Linux Solutions        | Phone: +49-231-2826-924     |
Vertretung West/Dortmund          | Fax:   +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686  | http://www.pengutronix.de   |


[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 488 bytes --]

^ permalink raw reply	[flat|nested] 5+ messages in thread
end of thread, other threads:[~2018-07-23  8:05 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-07-03 11:11 [PATCH v2] can: m_can: Fix runtime resume call Faiz Abbas
2018-07-03 11:11 ` Faiz Abbas
2018-07-10 11:36 ` Faiz Abbas
2018-07-10 11:36   ` Faiz Abbas
2018-07-23  8:05 ` Marc Kleine-Budde

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.