Linux RTC
 help / color / mirror / Atom feed
* [rtc-linux] [PATCH] rtc: Pass the IRQF_ONESHOT flag
@ 2015-08-14  2:13 Fabio Estevam
  2015-08-16 10:13 ` Krzysztof Kozlowski
  0 siblings, 1 reply; 5+ messages in thread
From: Fabio Estevam @ 2015-08-14  2:13 UTC (permalink / raw)
  To: alexandre.belloni; +Cc: rtc-linux, Fabio Estevam

From: Fabio Estevam <fabio.estevam@freescale.com>

Since commit 1c6c69525b40eb76de8adf039409722015927dc3 ("genirq: Reject
bogus threaded irq requests") threaded IRQs without a primary handler
need to be requested with IRQF_ONESHOT, otherwise the request will fail.

So pass the IRQF_ONESHOT flag in this case.

The semantic patch that makes this change is available
in scripts/coccinelle/misc/irqf_oneshot.cocci

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
---
 drivers/rtc/rtc-isl1208.c  | 2 +-
 drivers/rtc/rtc-lp8788.c   | 2 +-
 drivers/rtc/rtc-max77686.c | 3 ++-
 drivers/rtc/rtc-max77802.c | 3 ++-
 drivers/rtc/rtc-max8997.c  | 2 +-
 drivers/rtc/rtc-max8998.c  | 3 ++-
 drivers/rtc/rtc-rc5t583.c  | 2 +-
 drivers/rtc/rtc-rk808.c    | 2 +-
 drivers/rtc/rtc-s5m.c      | 3 ++-
 drivers/rtc/rtc-tps65910.c | 3 ++-
 drivers/rtc/rtc-wm831x.c   | 3 ++-
 11 files changed, 17 insertions(+), 11 deletions(-)

diff --git a/drivers/rtc/rtc-isl1208.c b/drivers/rtc/rtc-isl1208.c
index aa3b8f1..b57a304 100644
--- a/drivers/rtc/rtc-isl1208.c
+++ b/drivers/rtc/rtc-isl1208.c
@@ -638,7 +638,7 @@ isl1208_probe(struct i2c_client *client, const struct i2c_device_id *id)
 	if (client->irq > 0) {
 		rc = devm_request_threaded_irq(&client->dev, client->irq, NULL,
 					       isl1208_rtc_interrupt,
-					       IRQF_SHARED,
+					       IRQF_SHARED | IRQF_ONESHOT,
 					       isl1208_driver.driver.name,
 					       client);
 		if (!rc) {
diff --git a/drivers/rtc/rtc-lp8788.c b/drivers/rtc/rtc-lp8788.c
index e20e7bd..e0de665 100644
--- a/drivers/rtc/rtc-lp8788.c
+++ b/drivers/rtc/rtc-lp8788.c
@@ -280,7 +280,7 @@ static int lp8788_alarm_irq_register(struct platform_device *pdev,
 
 	return devm_request_threaded_irq(&pdev->dev, rtc->irq, NULL,
 				lp8788_alarm_irq_handler,
-				0, LP8788_ALM_IRQ, rtc);
+				IRQF_ONESHOT, LP8788_ALM_IRQ, rtc);
 }
 
 static int lp8788_rtc_probe(struct platform_device *pdev)
diff --git a/drivers/rtc/rtc-max77686.c b/drivers/rtc/rtc-max77686.c
index 7184a0e..06d1354 100644
--- a/drivers/rtc/rtc-max77686.c
+++ b/drivers/rtc/rtc-max77686.c
@@ -471,7 +471,8 @@ static int max77686_rtc_probe(struct platform_device *pdev)
 	}
 
 	ret = devm_request_threaded_irq(&pdev->dev, info->virq, NULL,
-				max77686_rtc_alarm_irq, 0, "rtc-alarm1", info);
+				max77686_rtc_alarm_irq, IRQF_ONESHOT,
+				"rtc-alarm1", info);
 	if (ret < 0)
 		dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
 			info->virq, ret);
diff --git a/drivers/rtc/rtc-max77802.c b/drivers/rtc/rtc-max77802.c
index 82ffcc5..e275d9b 100644
--- a/drivers/rtc/rtc-max77802.c
+++ b/drivers/rtc/rtc-max77802.c
@@ -444,7 +444,8 @@ static int max77802_rtc_probe(struct platform_device *pdev)
 	}
 
 	ret = devm_request_threaded_irq(&pdev->dev, info->virq, NULL,
-					max77802_rtc_alarm_irq, 0, "rtc-alarm1",
+					max77802_rtc_alarm_irq, IRQF_ONESHOT,
+					"rtc-alarm1",
 					info);
 	if (ret < 0)
 		dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
diff --git a/drivers/rtc/rtc-max8997.c b/drivers/rtc/rtc-max8997.c
index 9e02bcd..48e8ae4 100644
--- a/drivers/rtc/rtc-max8997.c
+++ b/drivers/rtc/rtc-max8997.c
@@ -499,7 +499,7 @@ static int max8997_rtc_probe(struct platform_device *pdev)
 	info->virq = virq;
 
 	ret = devm_request_threaded_irq(&pdev->dev, virq, NULL,
-				max8997_rtc_alarm_irq, 0,
+				max8997_rtc_alarm_irq, IRQF_ONESHOT,
 				"rtc-alarm0", info);
 	if (ret < 0)
 		dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
diff --git a/drivers/rtc/rtc-max8998.c b/drivers/rtc/rtc-max8998.c
index 30804b0..bcd4956 100644
--- a/drivers/rtc/rtc-max8998.c
+++ b/drivers/rtc/rtc-max8998.c
@@ -287,7 +287,8 @@ static int max8998_rtc_probe(struct platform_device *pdev)
 	}
 
 	ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL,
-				max8998_rtc_alarm_irq, 0, "rtc-alarm0", info);
+				max8998_rtc_alarm_irq, IRQF_ONESHOT,
+				"rtc-alarm0", info);
 
 	if (ret < 0)
 		dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
diff --git a/drivers/rtc/rtc-rc5t583.c b/drivers/rtc/rtc-rc5t583.c
index f28d577..a9b02af 100644
--- a/drivers/rtc/rtc-rc5t583.c
+++ b/drivers/rtc/rtc-rc5t583.c
@@ -248,7 +248,7 @@ static int rc5t583_rtc_probe(struct platform_device *pdev)
 
 	irq += RC5T583_IRQ_YALE;
 	ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
-		rc5t583_rtc_interrupt, IRQF_TRIGGER_LOW,
+		rc5t583_rtc_interrupt, IRQF_TRIGGER_LOW | IRQF_ONESHOT,
 		"rtc-rc5t583", &pdev->dev);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "IRQ is not free.\n");
diff --git a/drivers/rtc/rtc-rk808.c b/drivers/rtc/rtc-rk808.c
index 91ca0bc..bf118da 100644
--- a/drivers/rtc/rtc-rk808.c
+++ b/drivers/rtc/rtc-rk808.c
@@ -393,7 +393,7 @@ static int rk808_rtc_probe(struct platform_device *pdev)
 
 	/* request alarm irq of rk808 */
 	ret = devm_request_threaded_irq(&pdev->dev, rk808_rtc->irq, NULL,
-					rk808_alarm_irq, 0,
+					rk808_alarm_irq, IRQF_ONESHOT,
 					"RTC alarm", rk808_rtc);
 	if (ret) {
 		dev_err(&pdev->dev, "Failed to request alarm IRQ %d: %d\n",
diff --git a/drivers/rtc/rtc-s5m.c b/drivers/rtc/rtc-s5m.c
index 8c70d78..dab0c34 100644
--- a/drivers/rtc/rtc-s5m.c
+++ b/drivers/rtc/rtc-s5m.c
@@ -740,7 +740,8 @@ static int s5m_rtc_probe(struct platform_device *pdev)
 	}
 
 	ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL,
-					s5m_rtc_alarm_irq, 0, "rtc-alarm0",
+					s5m_rtc_alarm_irq, IRQF_ONESHOT,
+					"rtc-alarm0",
 					info);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
diff --git a/drivers/rtc/rtc-tps65910.c b/drivers/rtc/rtc-tps65910.c
index f42aa2b..9afafde 100644
--- a/drivers/rtc/rtc-tps65910.c
+++ b/drivers/rtc/rtc-tps65910.c
@@ -268,7 +268,8 @@ static int tps65910_rtc_probe(struct platform_device *pdev)
 	}
 
 	ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
-		tps65910_rtc_interrupt, IRQF_TRIGGER_LOW | IRQF_EARLY_RESUME,
+		tps65910_rtc_interrupt,
+		IRQF_TRIGGER_LOW | IRQF_EARLY_RESUME | IRQF_ONESHOT,
 		dev_name(&pdev->dev), &pdev->dev);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "IRQ is not free.\n");
diff --git a/drivers/rtc/rtc-wm831x.c b/drivers/rtc/rtc-wm831x.c
index 75aea4c..54504d5 100644
--- a/drivers/rtc/rtc-wm831x.c
+++ b/drivers/rtc/rtc-wm831x.c
@@ -445,7 +445,8 @@ static int wm831x_rtc_probe(struct platform_device *pdev)
 
 	ret = devm_request_threaded_irq(&pdev->dev, alm_irq, NULL,
 				wm831x_alm_irq,
-				IRQF_TRIGGER_RISING, "RTC alarm",
+				IRQF_TRIGGER_RISING | IRQF_ONESHOT,
+				"RTC alarm",
 				wm831x_rtc);
 	if (ret != 0) {
 		dev_err(&pdev->dev, "Failed to request alarm IRQ %d: %d\n",
-- 
1.9.1

-- 
-- 
You received this message because you are subscribed to "rtc-linux".
Membership options at http://groups.google.com/group/rtc-linux .
Please read http://groups.google.com/group/rtc-linux/web/checklist
before submitting a driver.
--- 
You received this message because you are subscribed to the Google Groups "rtc-linux" group.
To unsubscribe from this group and stop receiving emails from it, send an email to rtc-linux+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

^ permalink raw reply related	[flat|nested] 5+ messages in thread

* Re: [rtc-linux] [PATCH] rtc: Pass the IRQF_ONESHOT flag
  2015-08-14  2:13 [rtc-linux] [PATCH] rtc: Pass the IRQF_ONESHOT flag Fabio Estevam
@ 2015-08-16 10:13 ` Krzysztof Kozlowski
  2015-08-16 10:51   ` Krzysztof Kozlowski
  0 siblings, 1 reply; 5+ messages in thread
From: Krzysztof Kozlowski @ 2015-08-16 10:13 UTC (permalink / raw)
  To: rtc-linux, alexandre.belloni; +Cc: Fabio Estevam

W dniu 14.08.2015 o 11:13, Fabio Estevam pisze:
> From: Fabio Estevam <fabio.estevam@freescale.com>
> 
> Since commit 1c6c69525b40eb76de8adf039409722015927dc3 ("genirq: Reject
> bogus threaded irq requests") threaded IRQs without a primary handler
> need to be requested with IRQF_ONESHOT, otherwise the request will fail.

That statement is not entirely correct... because the request does not
fail. It works. At least for max77686 and rtc-s5m.

After looking at __setup_irq, your change does nothing because the flag
will be cleared:
	if (desc->irq_data.chip->flags & IRQCHIP_ONESHOT_SAFE)
		new->flags &= ~IRQF_ONESHOT;

Best regards,
Krzysztof


> 
> So pass the IRQF_ONESHOT flag in this case.
> 
> The semantic patch that makes this change is available
> in scripts/coccinelle/misc/irqf_oneshot.cocci
> 
> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
> ---
>  drivers/rtc/rtc-isl1208.c  | 2 +-
>  drivers/rtc/rtc-lp8788.c   | 2 +-
>  drivers/rtc/rtc-max77686.c | 3 ++-
>  drivers/rtc/rtc-max77802.c | 3 ++-
>  drivers/rtc/rtc-max8997.c  | 2 +-
>  drivers/rtc/rtc-max8998.c  | 3 ++-
>  drivers/rtc/rtc-rc5t583.c  | 2 +-
>  drivers/rtc/rtc-rk808.c    | 2 +-
>  drivers/rtc/rtc-s5m.c      | 3 ++-
>  drivers/rtc/rtc-tps65910.c | 3 ++-
>  drivers/rtc/rtc-wm831x.c   | 3 ++-
>  11 files changed, 17 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/rtc/rtc-isl1208.c b/drivers/rtc/rtc-isl1208.c
> index aa3b8f1..b57a304 100644
> --- a/drivers/rtc/rtc-isl1208.c
> +++ b/drivers/rtc/rtc-isl1208.c
> @@ -638,7 +638,7 @@ isl1208_probe(struct i2c_client *client, const struct i2c_device_id *id)
>  	if (client->irq > 0) {
>  		rc = devm_request_threaded_irq(&client->dev, client->irq, NULL,
>  					       isl1208_rtc_interrupt,
> -					       IRQF_SHARED,
> +					       IRQF_SHARED | IRQF_ONESHOT,
>  					       isl1208_driver.driver.name,
>  					       client);
>  		if (!rc) {
> diff --git a/drivers/rtc/rtc-lp8788.c b/drivers/rtc/rtc-lp8788.c
> index e20e7bd..e0de665 100644
> --- a/drivers/rtc/rtc-lp8788.c
> +++ b/drivers/rtc/rtc-lp8788.c
> @@ -280,7 +280,7 @@ static int lp8788_alarm_irq_register(struct platform_device *pdev,
>  
>  	return devm_request_threaded_irq(&pdev->dev, rtc->irq, NULL,
>  				lp8788_alarm_irq_handler,
> -				0, LP8788_ALM_IRQ, rtc);
> +				IRQF_ONESHOT, LP8788_ALM_IRQ, rtc);
>  }
>  
>  static int lp8788_rtc_probe(struct platform_device *pdev)
> diff --git a/drivers/rtc/rtc-max77686.c b/drivers/rtc/rtc-max77686.c
> index 7184a0e..06d1354 100644
> --- a/drivers/rtc/rtc-max77686.c
> +++ b/drivers/rtc/rtc-max77686.c
> @@ -471,7 +471,8 @@ static int max77686_rtc_probe(struct platform_device *pdev)
>  	}
>  
>  	ret = devm_request_threaded_irq(&pdev->dev, info->virq, NULL,
> -				max77686_rtc_alarm_irq, 0, "rtc-alarm1", info);
> +				max77686_rtc_alarm_irq, IRQF_ONESHOT,
> +				"rtc-alarm1", info);
>  	if (ret < 0)
>  		dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
>  			info->virq, ret);
> diff --git a/drivers/rtc/rtc-max77802.c b/drivers/rtc/rtc-max77802.c
> index 82ffcc5..e275d9b 100644
> --- a/drivers/rtc/rtc-max77802.c
> +++ b/drivers/rtc/rtc-max77802.c
> @@ -444,7 +444,8 @@ static int max77802_rtc_probe(struct platform_device *pdev)
>  	}
>  
>  	ret = devm_request_threaded_irq(&pdev->dev, info->virq, NULL,
> -					max77802_rtc_alarm_irq, 0, "rtc-alarm1",
> +					max77802_rtc_alarm_irq, IRQF_ONESHOT,
> +					"rtc-alarm1",
>  					info);
>  	if (ret < 0)
>  		dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
> diff --git a/drivers/rtc/rtc-max8997.c b/drivers/rtc/rtc-max8997.c
> index 9e02bcd..48e8ae4 100644
> --- a/drivers/rtc/rtc-max8997.c
> +++ b/drivers/rtc/rtc-max8997.c
> @@ -499,7 +499,7 @@ static int max8997_rtc_probe(struct platform_device *pdev)
>  	info->virq = virq;
>  
>  	ret = devm_request_threaded_irq(&pdev->dev, virq, NULL,
> -				max8997_rtc_alarm_irq, 0,
> +				max8997_rtc_alarm_irq, IRQF_ONESHOT,
>  				"rtc-alarm0", info);
>  	if (ret < 0)
>  		dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
> diff --git a/drivers/rtc/rtc-max8998.c b/drivers/rtc/rtc-max8998.c
> index 30804b0..bcd4956 100644
> --- a/drivers/rtc/rtc-max8998.c
> +++ b/drivers/rtc/rtc-max8998.c
> @@ -287,7 +287,8 @@ static int max8998_rtc_probe(struct platform_device *pdev)
>  	}
>  
>  	ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL,
> -				max8998_rtc_alarm_irq, 0, "rtc-alarm0", info);
> +				max8998_rtc_alarm_irq, IRQF_ONESHOT,
> +				"rtc-alarm0", info);
>  
>  	if (ret < 0)
>  		dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
> diff --git a/drivers/rtc/rtc-rc5t583.c b/drivers/rtc/rtc-rc5t583.c
> index f28d577..a9b02af 100644
> --- a/drivers/rtc/rtc-rc5t583.c
> +++ b/drivers/rtc/rtc-rc5t583.c
> @@ -248,7 +248,7 @@ static int rc5t583_rtc_probe(struct platform_device *pdev)
>  
>  	irq += RC5T583_IRQ_YALE;
>  	ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
> -		rc5t583_rtc_interrupt, IRQF_TRIGGER_LOW,
> +		rc5t583_rtc_interrupt, IRQF_TRIGGER_LOW | IRQF_ONESHOT,
>  		"rtc-rc5t583", &pdev->dev);
>  	if (ret < 0) {
>  		dev_err(&pdev->dev, "IRQ is not free.\n");
> diff --git a/drivers/rtc/rtc-rk808.c b/drivers/rtc/rtc-rk808.c
> index 91ca0bc..bf118da 100644
> --- a/drivers/rtc/rtc-rk808.c
> +++ b/drivers/rtc/rtc-rk808.c
> @@ -393,7 +393,7 @@ static int rk808_rtc_probe(struct platform_device *pdev)
>  
>  	/* request alarm irq of rk808 */
>  	ret = devm_request_threaded_irq(&pdev->dev, rk808_rtc->irq, NULL,
> -					rk808_alarm_irq, 0,
> +					rk808_alarm_irq, IRQF_ONESHOT,
>  					"RTC alarm", rk808_rtc);
>  	if (ret) {
>  		dev_err(&pdev->dev, "Failed to request alarm IRQ %d: %d\n",
> diff --git a/drivers/rtc/rtc-s5m.c b/drivers/rtc/rtc-s5m.c
> index 8c70d78..dab0c34 100644
> --- a/drivers/rtc/rtc-s5m.c
> +++ b/drivers/rtc/rtc-s5m.c
> @@ -740,7 +740,8 @@ static int s5m_rtc_probe(struct platform_device *pdev)
>  	}
>  
>  	ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL,
> -					s5m_rtc_alarm_irq, 0, "rtc-alarm0",
> +					s5m_rtc_alarm_irq, IRQF_ONESHOT,
> +					"rtc-alarm0",
>  					info);
>  	if (ret < 0) {
>  		dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
> diff --git a/drivers/rtc/rtc-tps65910.c b/drivers/rtc/rtc-tps65910.c
> index f42aa2b..9afafde 100644
> --- a/drivers/rtc/rtc-tps65910.c
> +++ b/drivers/rtc/rtc-tps65910.c
> @@ -268,7 +268,8 @@ static int tps65910_rtc_probe(struct platform_device *pdev)
>  	}
>  
>  	ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
> -		tps65910_rtc_interrupt, IRQF_TRIGGER_LOW | IRQF_EARLY_RESUME,
> +		tps65910_rtc_interrupt,
> +		IRQF_TRIGGER_LOW | IRQF_EARLY_RESUME | IRQF_ONESHOT,
>  		dev_name(&pdev->dev), &pdev->dev);
>  	if (ret < 0) {
>  		dev_err(&pdev->dev, "IRQ is not free.\n");
> diff --git a/drivers/rtc/rtc-wm831x.c b/drivers/rtc/rtc-wm831x.c
> index 75aea4c..54504d5 100644
> --- a/drivers/rtc/rtc-wm831x.c
> +++ b/drivers/rtc/rtc-wm831x.c
> @@ -445,7 +445,8 @@ static int wm831x_rtc_probe(struct platform_device *pdev)
>  
>  	ret = devm_request_threaded_irq(&pdev->dev, alm_irq, NULL,
>  				wm831x_alm_irq,
> -				IRQF_TRIGGER_RISING, "RTC alarm",
> +				IRQF_TRIGGER_RISING | IRQF_ONESHOT,
> +				"RTC alarm",
>  				wm831x_rtc);
>  	if (ret != 0) {
>  		dev_err(&pdev->dev, "Failed to request alarm IRQ %d: %d\n",
> 

-- 
-- 
You received this message because you are subscribed to "rtc-linux".
Membership options at http://groups.google.com/group/rtc-linux .
Please read http://groups.google.com/group/rtc-linux/web/checklist
before submitting a driver.
--- 
You received this message because you are subscribed to the Google Groups "rtc-linux" group.
To unsubscribe from this group and stop receiving emails from it, send an email to rtc-linux+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: [rtc-linux] [PATCH] rtc: Pass the IRQF_ONESHOT flag
  2015-08-16 10:13 ` Krzysztof Kozlowski
@ 2015-08-16 10:51   ` Krzysztof Kozlowski
  2015-08-16 10:54     ` Krzysztof Kozlowski
  0 siblings, 1 reply; 5+ messages in thread
From: Krzysztof Kozlowski @ 2015-08-16 10:51 UTC (permalink / raw)
  To: rtc-linux, alexandre.belloni; +Cc: Fabio Estevam

W dniu 16.08.2015 o 19:13, Krzysztof Kozlowski pisze:
> W dniu 14.08.2015 o 11:13, Fabio Estevam pisze:
>> From: Fabio Estevam <fabio.estevam@freescale.com>
>>
>> Since commit 1c6c69525b40eb76de8adf039409722015927dc3 ("genirq: Reject
>> bogus threaded irq requests") threaded IRQs without a primary handler
>> need to be requested with IRQF_ONESHOT, otherwise the request will fail.
> 
> That statement is not entirely correct... because the request does not
> fail. It works. At least for max77686 and rtc-s5m.
> 
> After looking at __setup_irq, your change does nothing because the flag
> will be cleared:
> 	if (desc->irq_data.chip->flags & IRQCHIP_ONESHOT_SAFE)
> 		new->flags &= ~IRQF_ONESHOT;

Heh, which is also not correct. The chip does not have
IRQCHIP_ONESHOT_SAFE set.

However interrupts in these drivers are nested so the handler is
"irq_nested_primary_handler". The parent device (sec-irq, max77686) has
properly set IRQF_ONESHOT.

Overall the patch is not needed, description is misleading (small
difference between "works" and "will fail") and cocci script generates
false positive (at least for max77686, max77802 and rtc-s5m).

>From another point of view, have you tested the patch on these devices?
This introduces small functional change - the irq becomes oneshot...

Best regards,
Krzystof

BTW Please Cc the maintainers for drivers. If the patch is marked as
request-for-tests, then they could provide it.

> 
> Best regards,
> Krzysztof
> 
> 
>>
>> So pass the IRQF_ONESHOT flag in this case.
>>
>> The semantic patch that makes this change is available
>> in scripts/coccinelle/misc/irqf_oneshot.cocci
>>
>> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
>> ---
>>  drivers/rtc/rtc-isl1208.c  | 2 +-
>>  drivers/rtc/rtc-lp8788.c   | 2 +-
>>  drivers/rtc/rtc-max77686.c | 3 ++-
>>  drivers/rtc/rtc-max77802.c | 3 ++-
>>  drivers/rtc/rtc-max8997.c  | 2 +-
>>  drivers/rtc/rtc-max8998.c  | 3 ++-
>>  drivers/rtc/rtc-rc5t583.c  | 2 +-
>>  drivers/rtc/rtc-rk808.c    | 2 +-
>>  drivers/rtc/rtc-s5m.c      | 3 ++-
>>  drivers/rtc/rtc-tps65910.c | 3 ++-
>>  drivers/rtc/rtc-wm831x.c   | 3 ++-
>>  11 files changed, 17 insertions(+), 11 deletions(-)
>>
>> diff --git a/drivers/rtc/rtc-isl1208.c b/drivers/rtc/rtc-isl1208.c
>> index aa3b8f1..b57a304 100644
>> --- a/drivers/rtc/rtc-isl1208.c
>> +++ b/drivers/rtc/rtc-isl1208.c
>> @@ -638,7 +638,7 @@ isl1208_probe(struct i2c_client *client, const struct i2c_device_id *id)
>>  	if (client->irq > 0) {
>>  		rc = devm_request_threaded_irq(&client->dev, client->irq, NULL,
>>  					       isl1208_rtc_interrupt,
>> -					       IRQF_SHARED,
>> +					       IRQF_SHARED | IRQF_ONESHOT,
>>  					       isl1208_driver.driver.name,
>>  					       client);
>>  		if (!rc) {
>> diff --git a/drivers/rtc/rtc-lp8788.c b/drivers/rtc/rtc-lp8788.c
>> index e20e7bd..e0de665 100644
>> --- a/drivers/rtc/rtc-lp8788.c
>> +++ b/drivers/rtc/rtc-lp8788.c
>> @@ -280,7 +280,7 @@ static int lp8788_alarm_irq_register(struct platform_device *pdev,
>>  
>>  	return devm_request_threaded_irq(&pdev->dev, rtc->irq, NULL,
>>  				lp8788_alarm_irq_handler,
>> -				0, LP8788_ALM_IRQ, rtc);
>> +				IRQF_ONESHOT, LP8788_ALM_IRQ, rtc);
>>  }
>>  
>>  static int lp8788_rtc_probe(struct platform_device *pdev)
>> diff --git a/drivers/rtc/rtc-max77686.c b/drivers/rtc/rtc-max77686.c
>> index 7184a0e..06d1354 100644
>> --- a/drivers/rtc/rtc-max77686.c
>> +++ b/drivers/rtc/rtc-max77686.c
>> @@ -471,7 +471,8 @@ static int max77686_rtc_probe(struct platform_device *pdev)
>>  	}
>>  
>>  	ret = devm_request_threaded_irq(&pdev->dev, info->virq, NULL,
>> -				max77686_rtc_alarm_irq, 0, "rtc-alarm1", info);
>> +				max77686_rtc_alarm_irq, IRQF_ONESHOT,
>> +				"rtc-alarm1", info);
>>  	if (ret < 0)
>>  		dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
>>  			info->virq, ret);
>> diff --git a/drivers/rtc/rtc-max77802.c b/drivers/rtc/rtc-max77802.c
>> index 82ffcc5..e275d9b 100644
>> --- a/drivers/rtc/rtc-max77802.c
>> +++ b/drivers/rtc/rtc-max77802.c
>> @@ -444,7 +444,8 @@ static int max77802_rtc_probe(struct platform_device *pdev)
>>  	}
>>  
>>  	ret = devm_request_threaded_irq(&pdev->dev, info->virq, NULL,
>> -					max77802_rtc_alarm_irq, 0, "rtc-alarm1",
>> +					max77802_rtc_alarm_irq, IRQF_ONESHOT,
>> +					"rtc-alarm1",
>>  					info);
>>  	if (ret < 0)
>>  		dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
>> diff --git a/drivers/rtc/rtc-max8997.c b/drivers/rtc/rtc-max8997.c
>> index 9e02bcd..48e8ae4 100644
>> --- a/drivers/rtc/rtc-max8997.c
>> +++ b/drivers/rtc/rtc-max8997.c
>> @@ -499,7 +499,7 @@ static int max8997_rtc_probe(struct platform_device *pdev)
>>  	info->virq = virq;
>>  
>>  	ret = devm_request_threaded_irq(&pdev->dev, virq, NULL,
>> -				max8997_rtc_alarm_irq, 0,
>> +				max8997_rtc_alarm_irq, IRQF_ONESHOT,
>>  				"rtc-alarm0", info);
>>  	if (ret < 0)
>>  		dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
>> diff --git a/drivers/rtc/rtc-max8998.c b/drivers/rtc/rtc-max8998.c
>> index 30804b0..bcd4956 100644
>> --- a/drivers/rtc/rtc-max8998.c
>> +++ b/drivers/rtc/rtc-max8998.c
>> @@ -287,7 +287,8 @@ static int max8998_rtc_probe(struct platform_device *pdev)
>>  	}
>>  
>>  	ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL,
>> -				max8998_rtc_alarm_irq, 0, "rtc-alarm0", info);
>> +				max8998_rtc_alarm_irq, IRQF_ONESHOT,
>> +				"rtc-alarm0", info);
>>  
>>  	if (ret < 0)
>>  		dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
>> diff --git a/drivers/rtc/rtc-rc5t583.c b/drivers/rtc/rtc-rc5t583.c
>> index f28d577..a9b02af 100644
>> --- a/drivers/rtc/rtc-rc5t583.c
>> +++ b/drivers/rtc/rtc-rc5t583.c
>> @@ -248,7 +248,7 @@ static int rc5t583_rtc_probe(struct platform_device *pdev)
>>  
>>  	irq += RC5T583_IRQ_YALE;
>>  	ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
>> -		rc5t583_rtc_interrupt, IRQF_TRIGGER_LOW,
>> +		rc5t583_rtc_interrupt, IRQF_TRIGGER_LOW | IRQF_ONESHOT,
>>  		"rtc-rc5t583", &pdev->dev);
>>  	if (ret < 0) {
>>  		dev_err(&pdev->dev, "IRQ is not free.\n");
>> diff --git a/drivers/rtc/rtc-rk808.c b/drivers/rtc/rtc-rk808.c
>> index 91ca0bc..bf118da 100644
>> --- a/drivers/rtc/rtc-rk808.c
>> +++ b/drivers/rtc/rtc-rk808.c
>> @@ -393,7 +393,7 @@ static int rk808_rtc_probe(struct platform_device *pdev)
>>  
>>  	/* request alarm irq of rk808 */
>>  	ret = devm_request_threaded_irq(&pdev->dev, rk808_rtc->irq, NULL,
>> -					rk808_alarm_irq, 0,
>> +					rk808_alarm_irq, IRQF_ONESHOT,
>>  					"RTC alarm", rk808_rtc);
>>  	if (ret) {
>>  		dev_err(&pdev->dev, "Failed to request alarm IRQ %d: %d\n",
>> diff --git a/drivers/rtc/rtc-s5m.c b/drivers/rtc/rtc-s5m.c
>> index 8c70d78..dab0c34 100644
>> --- a/drivers/rtc/rtc-s5m.c
>> +++ b/drivers/rtc/rtc-s5m.c
>> @@ -740,7 +740,8 @@ static int s5m_rtc_probe(struct platform_device *pdev)
>>  	}
>>  
>>  	ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL,
>> -					s5m_rtc_alarm_irq, 0, "rtc-alarm0",
>> +					s5m_rtc_alarm_irq, IRQF_ONESHOT,
>> +					"rtc-alarm0",
>>  					info);
>>  	if (ret < 0) {
>>  		dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
>> diff --git a/drivers/rtc/rtc-tps65910.c b/drivers/rtc/rtc-tps65910.c
>> index f42aa2b..9afafde 100644
>> --- a/drivers/rtc/rtc-tps65910.c
>> +++ b/drivers/rtc/rtc-tps65910.c
>> @@ -268,7 +268,8 @@ static int tps65910_rtc_probe(struct platform_device *pdev)
>>  	}
>>  
>>  	ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
>> -		tps65910_rtc_interrupt, IRQF_TRIGGER_LOW | IRQF_EARLY_RESUME,
>> +		tps65910_rtc_interrupt,
>> +		IRQF_TRIGGER_LOW | IRQF_EARLY_RESUME | IRQF_ONESHOT,
>>  		dev_name(&pdev->dev), &pdev->dev);
>>  	if (ret < 0) {
>>  		dev_err(&pdev->dev, "IRQ is not free.\n");
>> diff --git a/drivers/rtc/rtc-wm831x.c b/drivers/rtc/rtc-wm831x.c
>> index 75aea4c..54504d5 100644
>> --- a/drivers/rtc/rtc-wm831x.c
>> +++ b/drivers/rtc/rtc-wm831x.c
>> @@ -445,7 +445,8 @@ static int wm831x_rtc_probe(struct platform_device *pdev)
>>  
>>  	ret = devm_request_threaded_irq(&pdev->dev, alm_irq, NULL,
>>  				wm831x_alm_irq,
>> -				IRQF_TRIGGER_RISING, "RTC alarm",
>> +				IRQF_TRIGGER_RISING | IRQF_ONESHOT,
>> +				"RTC alarm",
>>  				wm831x_rtc);
>>  	if (ret != 0) {
>>  		dev_err(&pdev->dev, "Failed to request alarm IRQ %d: %d\n",
>>
> 

-- 
-- 
You received this message because you are subscribed to "rtc-linux".
Membership options at http://groups.google.com/group/rtc-linux .
Please read http://groups.google.com/group/rtc-linux/web/checklist
before submitting a driver.
--- 
You received this message because you are subscribed to the Google Groups "rtc-linux" group.
To unsubscribe from this group and stop receiving emails from it, send an email to rtc-linux+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: [rtc-linux] [PATCH] rtc: Pass the IRQF_ONESHOT flag
  2015-08-16 10:51   ` Krzysztof Kozlowski
@ 2015-08-16 10:54     ` Krzysztof Kozlowski
  2015-10-16 23:50       ` Alexandre Belloni
  0 siblings, 1 reply; 5+ messages in thread
From: Krzysztof Kozlowski @ 2015-08-16 10:54 UTC (permalink / raw)
  To: Fabio Estevam, Fabio Estevam
  Cc: rtc-linux, alexandre.belloni, Krzysztof Kozlowski

+CC Fabio's gmail address (disappeared from previous reply).

2015-08-16 19:51 GMT+09:00 Krzysztof Kozlowski <k.kozlowski@samsung.com>:
> W dniu 16.08.2015 o 19:13, Krzysztof Kozlowski pisze:
>> W dniu 14.08.2015 o 11:13, Fabio Estevam pisze:
>>> From: Fabio Estevam <fabio.estevam@freescale.com>
>>>
>>> Since commit 1c6c69525b40eb76de8adf039409722015927dc3 ("genirq: Reject
>>> bogus threaded irq requests") threaded IRQs without a primary handler
>>> need to be requested with IRQF_ONESHOT, otherwise the request will fail.
>>
>> That statement is not entirely correct... because the request does not
>> fail. It works. At least for max77686 and rtc-s5m.
>>
>> After looking at __setup_irq, your change does nothing because the flag
>> will be cleared:
>>       if (desc->irq_data.chip->flags & IRQCHIP_ONESHOT_SAFE)
>>               new->flags &= ~IRQF_ONESHOT;

Heh, which is also not correct. The chip does not have
IRQCHIP_ONESHOT_SAFE set.

However interrupts in these drivers are nested so the handler is
"irq_nested_primary_handler". The parent device (sec-irq, max77686) has
properly set IRQF_ONESHOT.

Overall the patch is not needed, description is misleading (small
difference between "works" and "will fail") and cocci script generates
false positive (at least for max77686, max77802 and rtc-s5m).

>From another point of view, have you tested the patch on these devices?
This introduces small functional change - the irq becomes oneshot...

Best regards,
Krzystof

BTW Please Cc the maintainers for drivers. If the patch is marked as
request-for-tests, then they could provide it.

>>
>> Best regards,
>> Krzysztof
>>
>>
>>>
>>> So pass the IRQF_ONESHOT flag in this case.
>>>
>>> The semantic patch that makes this change is available
>>> in scripts/coccinelle/misc/irqf_oneshot.cocci
>>>
>>> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
>>> ---
>>>  drivers/rtc/rtc-isl1208.c  | 2 +-
>>>  drivers/rtc/rtc-lp8788.c   | 2 +-
>>>  drivers/rtc/rtc-max77686.c | 3 ++-
>>>  drivers/rtc/rtc-max77802.c | 3 ++-
>>>  drivers/rtc/rtc-max8997.c  | 2 +-
>>>  drivers/rtc/rtc-max8998.c  | 3 ++-
>>>  drivers/rtc/rtc-rc5t583.c  | 2 +-
>>>  drivers/rtc/rtc-rk808.c    | 2 +-
>>>  drivers/rtc/rtc-s5m.c      | 3 ++-
>>>  drivers/rtc/rtc-tps65910.c | 3 ++-
>>>  drivers/rtc/rtc-wm831x.c   | 3 ++-
>>>  11 files changed, 17 insertions(+), 11 deletions(-)
>>>
>>> diff --git a/drivers/rtc/rtc-isl1208.c b/drivers/rtc/rtc-isl1208.c
>>> index aa3b8f1..b57a304 100644
>>> --- a/drivers/rtc/rtc-isl1208.c
>>> +++ b/drivers/rtc/rtc-isl1208.c
>>> @@ -638,7 +638,7 @@ isl1208_probe(struct i2c_client *client, const struct i2c_device_id *id)
>>>      if (client->irq > 0) {
>>>              rc = devm_request_threaded_irq(&client->dev, client->irq, NULL,
>>>                                             isl1208_rtc_interrupt,
>>> -                                           IRQF_SHARED,
>>> +                                           IRQF_SHARED | IRQF_ONESHOT,
>>>                                             isl1208_driver.driver.name,
>>>                                             client);
>>>              if (!rc) {
>>> diff --git a/drivers/rtc/rtc-lp8788.c b/drivers/rtc/rtc-lp8788.c
>>> index e20e7bd..e0de665 100644
>>> --- a/drivers/rtc/rtc-lp8788.c
>>> +++ b/drivers/rtc/rtc-lp8788.c
>>> @@ -280,7 +280,7 @@ static int lp8788_alarm_irq_register(struct platform_device *pdev,
>>>
>>>      return devm_request_threaded_irq(&pdev->dev, rtc->irq, NULL,
>>>                              lp8788_alarm_irq_handler,
>>> -                            0, LP8788_ALM_IRQ, rtc);
>>> +                            IRQF_ONESHOT, LP8788_ALM_IRQ, rtc);
>>>  }
>>>
>>>  static int lp8788_rtc_probe(struct platform_device *pdev)
>>> diff --git a/drivers/rtc/rtc-max77686.c b/drivers/rtc/rtc-max77686.c
>>> index 7184a0e..06d1354 100644
>>> --- a/drivers/rtc/rtc-max77686.c
>>> +++ b/drivers/rtc/rtc-max77686.c
>>> @@ -471,7 +471,8 @@ static int max77686_rtc_probe(struct platform_device *pdev)
>>>      }
>>>
>>>      ret = devm_request_threaded_irq(&pdev->dev, info->virq, NULL,
>>> -                            max77686_rtc_alarm_irq, 0, "rtc-alarm1", info);
>>> +                            max77686_rtc_alarm_irq, IRQF_ONESHOT,
>>> +                            "rtc-alarm1", info);
>>>      if (ret < 0)
>>>              dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
>>>                      info->virq, ret);
>>> diff --git a/drivers/rtc/rtc-max77802.c b/drivers/rtc/rtc-max77802.c
>>> index 82ffcc5..e275d9b 100644
>>> --- a/drivers/rtc/rtc-max77802.c
>>> +++ b/drivers/rtc/rtc-max77802.c
>>> @@ -444,7 +444,8 @@ static int max77802_rtc_probe(struct platform_device *pdev)
>>>      }
>>>
>>>      ret = devm_request_threaded_irq(&pdev->dev, info->virq, NULL,
>>> -                                    max77802_rtc_alarm_irq, 0, "rtc-alarm1",
>>> +                                    max77802_rtc_alarm_irq, IRQF_ONESHOT,
>>> +                                    "rtc-alarm1",
>>>                                      info);
>>>      if (ret < 0)
>>>              dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
>>> diff --git a/drivers/rtc/rtc-max8997.c b/drivers/rtc/rtc-max8997.c
>>> index 9e02bcd..48e8ae4 100644
>>> --- a/drivers/rtc/rtc-max8997.c
>>> +++ b/drivers/rtc/rtc-max8997.c
>>> @@ -499,7 +499,7 @@ static int max8997_rtc_probe(struct platform_device *pdev)
>>>      info->virq = virq;
>>>
>>>      ret = devm_request_threaded_irq(&pdev->dev, virq, NULL,
>>> -                            max8997_rtc_alarm_irq, 0,
>>> +                            max8997_rtc_alarm_irq, IRQF_ONESHOT,
>>>                              "rtc-alarm0", info);
>>>      if (ret < 0)
>>>              dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
>>> diff --git a/drivers/rtc/rtc-max8998.c b/drivers/rtc/rtc-max8998.c
>>> index 30804b0..bcd4956 100644
>>> --- a/drivers/rtc/rtc-max8998.c
>>> +++ b/drivers/rtc/rtc-max8998.c
>>> @@ -287,7 +287,8 @@ static int max8998_rtc_probe(struct platform_device *pdev)
>>>      }
>>>
>>>      ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL,
>>> -                            max8998_rtc_alarm_irq, 0, "rtc-alarm0", info);
>>> +                            max8998_rtc_alarm_irq, IRQF_ONESHOT,
>>> +                            "rtc-alarm0", info);
>>>
>>>      if (ret < 0)
>>>              dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
>>> diff --git a/drivers/rtc/rtc-rc5t583.c b/drivers/rtc/rtc-rc5t583.c
>>> index f28d577..a9b02af 100644
>>> --- a/drivers/rtc/rtc-rc5t583.c
>>> +++ b/drivers/rtc/rtc-rc5t583.c
>>> @@ -248,7 +248,7 @@ static int rc5t583_rtc_probe(struct platform_device *pdev)
>>>
>>>      irq += RC5T583_IRQ_YALE;
>>>      ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
>>> -            rc5t583_rtc_interrupt, IRQF_TRIGGER_LOW,
>>> +            rc5t583_rtc_interrupt, IRQF_TRIGGER_LOW | IRQF_ONESHOT,
>>>              "rtc-rc5t583", &pdev->dev);
>>>      if (ret < 0) {
>>>              dev_err(&pdev->dev, "IRQ is not free.\n");
>>> diff --git a/drivers/rtc/rtc-rk808.c b/drivers/rtc/rtc-rk808.c
>>> index 91ca0bc..bf118da 100644
>>> --- a/drivers/rtc/rtc-rk808.c
>>> +++ b/drivers/rtc/rtc-rk808.c
>>> @@ -393,7 +393,7 @@ static int rk808_rtc_probe(struct platform_device *pdev)
>>>
>>>      /* request alarm irq of rk808 */
>>>      ret = devm_request_threaded_irq(&pdev->dev, rk808_rtc->irq, NULL,
>>> -                                    rk808_alarm_irq, 0,
>>> +                                    rk808_alarm_irq, IRQF_ONESHOT,
>>>                                      "RTC alarm", rk808_rtc);
>>>      if (ret) {
>>>              dev_err(&pdev->dev, "Failed to request alarm IRQ %d: %d\n",
>>> diff --git a/drivers/rtc/rtc-s5m.c b/drivers/rtc/rtc-s5m.c
>>> index 8c70d78..dab0c34 100644
>>> --- a/drivers/rtc/rtc-s5m.c
>>> +++ b/drivers/rtc/rtc-s5m.c
>>> @@ -740,7 +740,8 @@ static int s5m_rtc_probe(struct platform_device *pdev)
>>>      }
>>>
>>>      ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL,
>>> -                                    s5m_rtc_alarm_irq, 0, "rtc-alarm0",
>>> +                                    s5m_rtc_alarm_irq, IRQF_ONESHOT,
>>> +                                    "rtc-alarm0",
>>>                                      info);
>>>      if (ret < 0) {
>>>              dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
>>> diff --git a/drivers/rtc/rtc-tps65910.c b/drivers/rtc/rtc-tps65910.c
>>> index f42aa2b..9afafde 100644
>>> --- a/drivers/rtc/rtc-tps65910.c
>>> +++ b/drivers/rtc/rtc-tps65910.c
>>> @@ -268,7 +268,8 @@ static int tps65910_rtc_probe(struct platform_device *pdev)
>>>      }
>>>
>>>      ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
>>> -            tps65910_rtc_interrupt, IRQF_TRIGGER_LOW | IRQF_EARLY_RESUME,
>>> +            tps65910_rtc_interrupt,
>>> +            IRQF_TRIGGER_LOW | IRQF_EARLY_RESUME | IRQF_ONESHOT,
>>>              dev_name(&pdev->dev), &pdev->dev);
>>>      if (ret < 0) {
>>>              dev_err(&pdev->dev, "IRQ is not free.\n");
>>> diff --git a/drivers/rtc/rtc-wm831x.c b/drivers/rtc/rtc-wm831x.c
>>> index 75aea4c..54504d5 100644
>>> --- a/drivers/rtc/rtc-wm831x.c
>>> +++ b/drivers/rtc/rtc-wm831x.c
>>> @@ -445,7 +445,8 @@ static int wm831x_rtc_probe(struct platform_device *pdev)
>>>
>>>      ret = devm_request_threaded_irq(&pdev->dev, alm_irq, NULL,
>>>                              wm831x_alm_irq,
>>> -                            IRQF_TRIGGER_RISING, "RTC alarm",
>>> +                            IRQF_TRIGGER_RISING | IRQF_ONESHOT,
>>> +                            "RTC alarm",
>>>                              wm831x_rtc);
>>>      if (ret != 0) {
>>>              dev_err(&pdev->dev, "Failed to request alarm IRQ %d: %d\n",
>>>
>>
>

-- 
-- 
You received this message because you are subscribed to "rtc-linux".
Membership options at http://groups.google.com/group/rtc-linux .
Please read http://groups.google.com/group/rtc-linux/web/checklist
before submitting a driver.
--- 
You received this message because you are subscribed to the Google Groups "rtc-linux" group.
To unsubscribe from this group and stop receiving emails from it, send an email to rtc-linux+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: [rtc-linux] [PATCH] rtc: Pass the IRQF_ONESHOT flag
  2015-08-16 10:54     ` Krzysztof Kozlowski
@ 2015-10-16 23:50       ` Alexandre Belloni
  0 siblings, 0 replies; 5+ messages in thread
From: Alexandre Belloni @ 2015-10-16 23:50 UTC (permalink / raw)
  To: Krzysztof Kozlowski, Fabio Estevam; +Cc: Fabio Estevam, rtc-linux

Hi,

On 16/08/2015 at 19:54:33 +0900, Krzysztof Kozlowski wrote :
> Overall the patch is not needed, description is misleading (small
> difference between "works" and "will fail") and cocci script generates
> false positive (at least for max77686, max77802 and rtc-s5m).
> 
> From another point of view, have you tested the patch on these devices?
> This introduces small functional change - the irq becomes oneshot...
> 

I had a good look and they are actually all false positive apart from
isl1208 (they are all MFDs). Fabio, do you mind reworking?


-- 
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

-- 
-- 
You received this message because you are subscribed to "rtc-linux".
Membership options at http://groups.google.com/group/rtc-linux .
Please read http://groups.google.com/group/rtc-linux/web/checklist
before submitting a driver.
--- 
You received this message because you are subscribed to the Google Groups "rtc-linux" group.
To unsubscribe from this group and stop receiving emails from it, send an email to rtc-linux+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2015-10-16 23:50 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2015-08-14  2:13 [rtc-linux] [PATCH] rtc: Pass the IRQF_ONESHOT flag Fabio Estevam
2015-08-16 10:13 ` Krzysztof Kozlowski
2015-08-16 10:51   ` Krzysztof Kozlowski
2015-08-16 10:54     ` Krzysztof Kozlowski
2015-10-16 23:50       ` Alexandre Belloni

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox