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From: Wolfram Sang <wsa+renesas@sang-engineering.com>
To: linux-arm-kernel@lists.infradead.org
Cc: linux-renesas-soc@vger.kernel.org,
	Wolfram Sang <wsa+renesas@sang-engineering.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	linux-kernel@vger.kernel.org
Subject: [PATCH 1/2] arm64: add grace period when rebooting
Date: Sat, 19 Dec 2020 15:36:46 +0100	[thread overview]
Message-ID: <20201219143648.56217-2-wsa+renesas@sang-engineering.com> (raw)
In-Reply-To: <20201219143648.56217-1-wsa+renesas@sang-engineering.com>

I work on a system where I currently need to reboot via watchdog.
Because the watchdog needs a bit of time to fire, add a grace period
like on arm32 to avoid the false positive warning message.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
 arch/arm64/kernel/process.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
index 6616486a58fe..3c770329364f 100644
--- a/arch/arm64/kernel/process.c
+++ b/arch/arm64/kernel/process.c
@@ -204,6 +204,9 @@ void machine_restart(char *cmd)
 	else
 		do_kernel_restart(cmd);
 
+	/* Give a grace period for failure to restart of 1s */
+	mdelay(1000);
+
 	/*
 	 * Whoops - the architecture was unable to reboot.
 	 */
-- 
2.29.2


WARNING: multiple messages have this Message-ID (diff)
From: Wolfram Sang <wsa+renesas@sang-engineering.com>
To: linux-arm-kernel@lists.infradead.org
Cc: linux-renesas-soc@vger.kernel.org,
	Wolfram Sang <wsa+renesas@sang-engineering.com>,
	Will Deacon <will@kernel.org>,
	linux-kernel@vger.kernel.org,
	Catalin Marinas <catalin.marinas@arm.com>
Subject: [PATCH 1/2] arm64: add grace period when rebooting
Date: Sat, 19 Dec 2020 15:36:46 +0100	[thread overview]
Message-ID: <20201219143648.56217-2-wsa+renesas@sang-engineering.com> (raw)
In-Reply-To: <20201219143648.56217-1-wsa+renesas@sang-engineering.com>

I work on a system where I currently need to reboot via watchdog.
Because the watchdog needs a bit of time to fire, add a grace period
like on arm32 to avoid the false positive warning message.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
 arch/arm64/kernel/process.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
index 6616486a58fe..3c770329364f 100644
--- a/arch/arm64/kernel/process.c
+++ b/arch/arm64/kernel/process.c
@@ -204,6 +204,9 @@ void machine_restart(char *cmd)
 	else
 		do_kernel_restart(cmd);
 
+	/* Give a grace period for failure to restart of 1s */
+	mdelay(1000);
+
 	/*
 	 * Whoops - the architecture was unable to reboot.
 	 */
-- 
2.29.2


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  reply	other threads:[~2020-12-19 14:37 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-19 14:36 [PATCH 0/2] arm64: small updates to rebooting Wolfram Sang
2020-12-19 14:36 ` Wolfram Sang
2020-12-19 14:36 ` Wolfram Sang [this message]
2020-12-19 14:36   ` [PATCH 1/2] arm64: add grace period when rebooting Wolfram Sang
2021-01-12 13:55   ` Will Deacon
2021-01-12 13:55     ` Will Deacon
2021-01-12 14:28     ` Wolfram Sang
2021-01-12 14:28       ` Wolfram Sang
2020-12-19 14:36 ` [PATCH 2/2] arm64: proper comment formatting in reboot handler Wolfram Sang
2020-12-19 14:36   ` Wolfram Sang
2020-12-22  8:56   ` Geert Uytterhoeven
2020-12-22  8:56     ` Geert Uytterhoeven

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