From mboxrd@z Thu Jan 1 00:00:00 1970 From: thierry.reding@gmail.com (Thierry Reding) Date: Mon, 30 Jan 2017 12:05:10 +0100 Subject: [PATCH 4/6] ARM: Register with kernel restart handler In-Reply-To: <20170130110512.6943-1-thierry.reding@gmail.com> References: <20170130110512.6943-1-thierry.reding@gmail.com> Message-ID: <20170130110512.6943-5-thierry.reding@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Guenter Roeck 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 Reviewed-by: Wolfram Sang Signed-off-by: Guenter Roeck Signed-off-by: Thierry Reding --- 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