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From: Xianwei Zhao via B4 Relay <devnull+xianwei.zhao.amlogic.com@kernel.org>
To: Yiting Deng <yiting.deng@amlogic.com>,
	 Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: linux-amlogic@lists.infradead.org, linux-rtc@vger.kernel.org,
	 linux-kernel@vger.kernel.org,
	Xianwei Zhao <xianwei.zhao@amlogic.com>
Subject: [PATCH] rtc: amlogic-a4: clear unsupported update interrupt feature
Date: Wed, 24 Jun 2026 07:24:34 +0000	[thread overview]
Message-ID: <20260624-rtc-feature-v1-1-42dccd22c0ee@amlogic.com> (raw)

From: Xianwei Zhao <xianwei.zhao@amlogic.com>

The Amlogic A4 RTC does not support update interrupt. Clear
RTC_FEATURE_UPDATE_INTERRUPT before registering the RTC device to
prevent userspace from enabling an unsupported RTC UIE function.

Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
---
Clear RTC_FEATURE_UPDATE_INTERRUPT before registering the RTC device.
---
 drivers/rtc/rtc-amlogic-a4.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/rtc/rtc-amlogic-a4.c b/drivers/rtc/rtc-amlogic-a4.c
index 50938c35af36..116cf095a9e9 100644
--- a/drivers/rtc/rtc-amlogic-a4.c
+++ b/drivers/rtc/rtc-amlogic-a4.c
@@ -379,6 +379,7 @@ static int aml_rtc_probe(struct platform_device *pdev)
 	rtc->rtc_dev->ops = &aml_rtc_ops;
 	rtc->rtc_dev->range_min = 0;
 	rtc->rtc_dev->range_max = U32_MAX;
+	clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, rtc->rtc_dev->features);
 
 	return devm_rtc_register_device(rtc->rtc_dev);
 }

---
base-commit: 851d961ff248218f681c53cf0f7f08cf8201a117
change-id: 20260624-rtc-feature-03ce3f3843a9

Best regards,
-- 
Xianwei Zhao <xianwei.zhao@amlogic.com>



WARNING: multiple messages have this Message-ID (diff)
From: Xianwei Zhao via B4 Relay <devnull+xianwei.zhao.amlogic.com@kernel.org>
To: Yiting Deng <yiting.deng@amlogic.com>,
	 Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: linux-amlogic@lists.infradead.org, linux-rtc@vger.kernel.org,
	 linux-kernel@vger.kernel.org,
	Xianwei Zhao <xianwei.zhao@amlogic.com>
Subject: [PATCH] rtc: amlogic-a4: clear unsupported update interrupt feature
Date: Wed, 24 Jun 2026 07:24:34 +0000	[thread overview]
Message-ID: <20260624-rtc-feature-v1-1-42dccd22c0ee@amlogic.com> (raw)

From: Xianwei Zhao <xianwei.zhao@amlogic.com>

The Amlogic A4 RTC does not support update interrupt. Clear
RTC_FEATURE_UPDATE_INTERRUPT before registering the RTC device to
prevent userspace from enabling an unsupported RTC UIE function.

Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
---
Clear RTC_FEATURE_UPDATE_INTERRUPT before registering the RTC device.
---
 drivers/rtc/rtc-amlogic-a4.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/rtc/rtc-amlogic-a4.c b/drivers/rtc/rtc-amlogic-a4.c
index 50938c35af36..116cf095a9e9 100644
--- a/drivers/rtc/rtc-amlogic-a4.c
+++ b/drivers/rtc/rtc-amlogic-a4.c
@@ -379,6 +379,7 @@ static int aml_rtc_probe(struct platform_device *pdev)
 	rtc->rtc_dev->ops = &aml_rtc_ops;
 	rtc->rtc_dev->range_min = 0;
 	rtc->rtc_dev->range_max = U32_MAX;
+	clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, rtc->rtc_dev->features);
 
 	return devm_rtc_register_device(rtc->rtc_dev);
 }

---
base-commit: 851d961ff248218f681c53cf0f7f08cf8201a117
change-id: 20260624-rtc-feature-03ce3f3843a9

Best regards,
-- 
Xianwei Zhao <xianwei.zhao@amlogic.com>



_______________________________________________
linux-amlogic mailing list
linux-amlogic@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-amlogic

WARNING: multiple messages have this Message-ID (diff)
From: Xianwei Zhao <xianwei.zhao@amlogic.com>
To: Yiting Deng <yiting.deng@amlogic.com>,
	 Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: linux-amlogic@lists.infradead.org, linux-rtc@vger.kernel.org,
	 linux-kernel@vger.kernel.org,
	Xianwei Zhao <xianwei.zhao@amlogic.com>
Subject: [PATCH] rtc: amlogic-a4: clear unsupported update interrupt feature
Date: Wed, 24 Jun 2026 07:24:34 +0000	[thread overview]
Message-ID: <20260624-rtc-feature-v1-1-42dccd22c0ee@amlogic.com> (raw)

The Amlogic A4 RTC does not support update interrupt. Clear
RTC_FEATURE_UPDATE_INTERRUPT before registering the RTC device to
prevent userspace from enabling an unsupported RTC UIE function.

Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
---
Clear RTC_FEATURE_UPDATE_INTERRUPT before registering the RTC device.
---
 drivers/rtc/rtc-amlogic-a4.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/rtc/rtc-amlogic-a4.c b/drivers/rtc/rtc-amlogic-a4.c
index 50938c35af36..116cf095a9e9 100644
--- a/drivers/rtc/rtc-amlogic-a4.c
+++ b/drivers/rtc/rtc-amlogic-a4.c
@@ -379,6 +379,7 @@ static int aml_rtc_probe(struct platform_device *pdev)
 	rtc->rtc_dev->ops = &aml_rtc_ops;
 	rtc->rtc_dev->range_min = 0;
 	rtc->rtc_dev->range_max = U32_MAX;
+	clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, rtc->rtc_dev->features);
 
 	return devm_rtc_register_device(rtc->rtc_dev);
 }

---
base-commit: 851d961ff248218f681c53cf0f7f08cf8201a117
change-id: 20260624-rtc-feature-03ce3f3843a9

Best regards,
-- 
Xianwei Zhao <xianwei.zhao@amlogic.com>


             reply	other threads:[~2026-06-24  7:24 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-24  7:24 Xianwei Zhao via B4 Relay [this message]
2026-06-24  7:24 ` [PATCH] rtc: amlogic-a4: clear unsupported update interrupt feature Xianwei Zhao
2026-06-24  7:24 ` Xianwei Zhao via B4 Relay

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