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From: Thierry Reding <thierry.reding@gmail.com>
To: Russell King <linux@armlinux.org.uk>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>, Arnd Bergmann <arnd@arndb.de>
Cc: Mark Rutland <mark.rutland@arm.com>,
	Guenter Roeck <linux@roeck-us.net>,
	Stefano Stabellini <sstabellini@kernel.org>,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH 4/6] ARM: Register with kernel restart handler
Date: Mon, 30 Jan 2017 12:05:10 +0100	[thread overview]
Message-ID: <20170130110512.6943-5-thierry.reding@gmail.com> (raw)
In-Reply-To: <20170130110512.6943-1-thierry.reding@gmail.com>

From: Guenter Roeck <linux@roeck-us.net>

By making use of the kernel restart handler, board specific restart
handlers can be prioritized amongst available mechanisms for a particular
board or system.

Select the default priority of 128 to indicate that the restart callback
in the machine description is the default restart mechanism.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 arch/arm/kernel/setup.c | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index f4e54503afa9..cc4f9564f4e3 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -1058,6 +1058,20 @@ void __init hyp_mode_check(void)
 #endif
 }
 
+static void (*__arm_pm_restart)(enum reboot_mode reboot_mode, const char *cmd);
+
+static int arm_restart(struct notifier_block *nb, unsigned long action,
+		       void *data)
+{
+	__arm_pm_restart(action, data);
+	return NOTIFY_DONE;
+}
+
+static struct notifier_block arm_restart_nb = {
+	.notifier_call = arm_restart,
+	.priority = 128,
+};
+
 void __init setup_arch(char **cmdline_p)
 {
 	const struct machine_desc *mdesc;
@@ -1107,8 +1121,10 @@ void __init setup_arch(char **cmdline_p)
 	paging_init(mdesc);
 	request_standard_resources(mdesc);
 
-	if (mdesc->restart)
-		arm_pm_restart = mdesc->restart;
+	if (mdesc->restart) {
+		__arm_pm_restart = mdesc->restart;
+		register_restart_handler(&arm_restart_nb);
+	}
 
 	unflatten_device_tree();
 
-- 
2.11.0

WARNING: multiple messages have this Message-ID
From: thierry.reding@gmail.com (Thierry Reding)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 4/6] ARM: Register with kernel restart handler
Date: Mon, 30 Jan 2017 12:05:10 +0100	[thread overview]
Message-ID: <20170130110512.6943-5-thierry.reding@gmail.com> (raw)
In-Reply-To: <20170130110512.6943-1-thierry.reding@gmail.com>

From: Guenter Roeck <linux@roeck-us.net>

By making use of the kernel restart handler, board specific restart
handlers can be prioritized amongst available mechanisms for a particular
board or system.

Select the default priority of 128 to indicate that the restart callback
in the machine description is the default restart mechanism.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 arch/arm/kernel/setup.c | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index f4e54503afa9..cc4f9564f4e3 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -1058,6 +1058,20 @@ void __init hyp_mode_check(void)
 #endif
 }
 
+static void (*__arm_pm_restart)(enum reboot_mode reboot_mode, const char *cmd);
+
+static int arm_restart(struct notifier_block *nb, unsigned long action,
+		       void *data)
+{
+	__arm_pm_restart(action, data);
+	return NOTIFY_DONE;
+}
+
+static struct notifier_block arm_restart_nb = {
+	.notifier_call = arm_restart,
+	.priority = 128,
+};
+
 void __init setup_arch(char **cmdline_p)
 {
 	const struct machine_desc *mdesc;
@@ -1107,8 +1121,10 @@ void __init setup_arch(char **cmdline_p)
 	paging_init(mdesc);
 	request_standard_resources(mdesc);
 
-	if (mdesc->restart)
-		arm_pm_restart = mdesc->restart;
+	if (mdesc->restart) {
+		__arm_pm_restart = mdesc->restart;
+		register_restart_handler(&arm_restart_nb);
+	}
 
 	unflatten_device_tree();
 
-- 
2.11.0

  parent reply	other threads:[~2017-01-30 11:07 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-01-30 11:05 [PATCH 0/6] ARM, arm64: Remove arm_pm_restart() Thierry Reding
2017-01-30 11:05 ` Thierry Reding
2017-01-30 11:05 ` [PATCH 1/6] ARM: prima2: Register with kernel restart handler Thierry Reding
2017-01-30 11:05   ` Thierry Reding
2017-01-30 11:05 ` [PATCH 2/6] ARM: xen: " Thierry Reding
2017-01-30 11:05   ` Thierry Reding
2017-01-30 11:05 ` [PATCH 3/6] drivers: firmware: psci: " Thierry Reding
2017-01-30 11:05   ` Thierry Reding
2017-01-30 11:05 ` Thierry Reding [this message]
2017-01-30 11:05   ` [PATCH 4/6] ARM: " Thierry Reding
2017-01-30 11:05 ` [PATCH 5/6] ARM64: Remove arm_pm_restart() Thierry Reding
2017-01-30 11:05   ` Thierry Reding
2017-01-30 11:05 ` [PATCH 6/6] ARM: " Thierry Reding
2017-01-30 11:05   ` Thierry Reding
2019-09-14 15:25 ` [PATCH 0/6] ARM, arm64: " Guenter Roeck
2019-09-14 15:25   ` Guenter Roeck
2019-09-16  7:49   ` Arnd Bergmann
2019-09-16  7:49     ` Arnd Bergmann
2019-09-16 13:17     ` Guenter Roeck
2019-09-16 13:17       ` Guenter Roeck
2019-09-16 13:49       ` Thierry Reding
2019-09-16 13:49         ` Thierry Reding
2019-09-16 15:43         ` Guenter Roeck
2019-09-16 15:43           ` Guenter Roeck
2019-09-16 15:50           ` Thierry Reding
2019-09-16 15:50             ` Thierry Reding
2019-09-16 16:29             ` Arnd Bergmann
2019-09-16 16:29               ` Arnd Bergmann
2019-09-16 20:28               ` Thierry Reding
2019-09-16 20:28                 ` Thierry Reding
2019-09-17  0:41                 ` Alexandre Belloni
2019-09-17  0:41                   ` Alexandre Belloni
2019-09-17  7:01                 ` Arnd Bergmann
2019-09-17  7:01                   ` Arnd Bergmann
2019-09-17 13:06                   ` Guenter Roeck
2019-09-17 13:06                     ` Guenter Roeck
  -- strict thread matches above, loose matches on Subject: below --
2019-10-15 14:51 [PATCH 0/6] ARM/arm64: arm_pm_restart removal Thierry Reding
2019-10-15 14:51 ` [PATCH 4/6] ARM: Register with kernel restart handler Thierry Reding
2019-10-15 14:51   ` Thierry Reding
2016-04-08 12:53 [PATCH 0/6] ARM/ARM64: Drop arm_pm_restart Guenter Roeck
2016-04-08 12:53 ` [PATCH 4/6] ARM: Register with kernel restart handler Guenter Roeck
2016-04-08 12:53   ` Guenter Roeck

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