| Message ID | 1411371774-6834-1-git-send-email-pramod.gurav@smartplayin.com (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
On Mon, Sep 22, 2014 at 01:12:54PM +0530, Pramod Gurav wrote: > This change replaces use of arm_pm_restart with recently introduced > reset mechanism in Linux kernel called restart_notifier. > > Cc: Guenter Roeck <linux@roeck-us.net> > Cc: Josh Cartwright <joshc@codeaurora.org> > Cc: Sebastian Reichel <sre@kernel.org> > Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> > Cc: David Woodhouse <dwmw2@infradead.org> > Cc: Stephen Boyd <sboyd@codeaurora.org> > Cc: linux-pm@vger.kernel.org > > Signed-off-by: Pramod Gurav <pramod.gurav@smartplayin.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> -- To unsubscribe from this list: send the line "unsubscribe linux-pm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 09/22, Pramod Gurav wrote: > diff --git a/drivers/power/reset/msm-poweroff.c b/drivers/power/reset/msm-poweroff.c > index 774f9a3..db73238 100644 > --- a/drivers/power/reset/msm-poweroff.c > +++ b/drivers/power/reset/msm-poweroff.c > @@ -24,17 +24,24 @@ > #include <asm/system_misc.h> We can remove this include now too? > > static void __iomem *msm_ps_hold; > - [...] > @@ -47,8 +54,10 @@ 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; > + And it looks like we should be including <linux/pm.h> for the pm_power_off hook?
diff --git a/drivers/power/reset/msm-poweroff.c b/drivers/power/reset/msm-poweroff.c index 774f9a3..db73238 100644 --- a/drivers/power/reset/msm-poweroff.c +++ b/drivers/power/reset/msm-poweroff.c @@ -24,17 +24,24 @@ #include <asm/system_misc.h> 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 +54,10 @@ 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; }
This change replaces use of arm_pm_restart with recently introduced reset mechanism in Linux kernel called restart_notifier. Cc: Guenter Roeck <linux@roeck-us.net> Cc: Josh Cartwright <joshc@codeaurora.org> Cc: Sebastian Reichel <sre@kernel.org> Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Stephen Boyd <sboyd@codeaurora.org> Cc: linux-pm@vger.kernel.org Signed-off-by: Pramod Gurav <pramod.gurav@smartplayin.com> --- Tested on Dragonboard APQ8074 Changes since v1: - Initialized restart_nb with its declaration - Removed return check for register_restart_handler as it always returns 0 as per Guenter's suggestion to Josh's similar patch. This takes care of Guenter's comments on error logs and NULL initialization of restart_nb.notifier_call. drivers/power/reset/msm-poweroff.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-)