From 18a702e0de9879d5c0225a09f494443f0b91a0cc Mon Sep 17 00:00:00 2001 From: Pramod Gurav Date: Thu, 25 Sep 2014 17:03:51 +0530 Subject: [PATCH] power: reset: use restart_notifier mechanism for msm-poweroff This change replaces use of arm_pm_restart with recently introduced reset mechanism in Linux kernel called restart_notifier. Choosing priority 128, which is default priority, as according to documentation, this mechanism is sufficient to restart the entire system. Cc: Guenter Roeck Cc: Josh Cartwright Cc: Sebastian Reichel Cc: Dmitry Eremin-Solenikov Cc: David Woodhouse Cc: Stephen Boyd Cc: linux-pm@vger.kernel.org Reviewed-by: Guenter Roeck Reviewed-by: Stephen Boyd Signed-off-by: Pramod Gurav Signed-off-by: Sebastian Reichel --- drivers/power/reset/msm-poweroff.c | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) diff --git a/drivers/power/reset/msm-poweroff.c b/drivers/power/reset/msm-poweroff.c index 774f9a3b310d..4702efdfe466 100644 --- a/drivers/power/reset/msm-poweroff.c +++ b/drivers/power/reset/msm-poweroff.c @@ -20,21 +20,27 @@ #include #include #include - -#include +#include static void __iomem *msm_ps_hold; - -static void do_msm_restart(enum reboot_mode reboot_mode, const char *cmd) +static int do_msm_restart(struct notifier_block *nb, unsigned long action, + void *data) { writel(0, msm_ps_hold); mdelay(10000); + + return NOTIFY_DONE; } +static struct notifier_block restart_nb = { + .notifier_call = do_msm_restart, + .priority = 128, +}; + static void do_msm_poweroff(void) { /* TODO: Add poweroff capability */ - do_msm_restart(REBOOT_HARD, NULL); + do_msm_restart(&restart_nb, 0, NULL); } static int msm_restart_probe(struct platform_device *pdev) @@ -47,8 +53,10 @@ static int msm_restart_probe(struct platform_device *pdev) if (IS_ERR(msm_ps_hold)) return PTR_ERR(msm_ps_hold); + register_restart_handler(&restart_nb); + pm_power_off = do_msm_poweroff; - arm_pm_restart = do_msm_restart; + return 0; }