From 6dd1ad1f236e7e683e92efd6b5b3953615900701 Mon Sep 17 00:00:00 2001 From: Alexandre Belloni Date: Tue, 11 Aug 2015 11:12:49 +0200 Subject: [PATCH] power/reset: at91-poweroff: allow compiling as a module It was not possible to compile at91-poweroff as a module. Implement .remove() to allow it. Also switch to module_platform_driver_probe() as it is not hotpluggable. Signed-off-by: Alexandre Belloni Signed-off-by: Sebastian Reichel --- drivers/power/reset/Kconfig | 2 +- drivers/power/reset/at91-poweroff.c | 18 +++++++++++++++--- 2 files changed, 16 insertions(+), 4 deletions(-) diff --git a/drivers/power/reset/Kconfig b/drivers/power/reset/Kconfig index 5cec1d9fdd47..1131cf75acc6 100644 --- a/drivers/power/reset/Kconfig +++ b/drivers/power/reset/Kconfig @@ -15,7 +15,7 @@ config POWER_RESET_AS3722 This driver supports turning off board via a ams AS3722 power-off. config POWER_RESET_AT91_POWEROFF - bool "Atmel AT91 poweroff driver" + tristate "Atmel AT91 poweroff driver" depends on ARCH_AT91 default SOC_AT91SAM9 || SOC_SAMA5 help diff --git a/drivers/power/reset/at91-poweroff.c b/drivers/power/reset/at91-poweroff.c index 9847cfb7e23d..3e698d916c4f 100644 --- a/drivers/power/reset/at91-poweroff.c +++ b/drivers/power/reset/at91-poweroff.c @@ -119,7 +119,7 @@ static void at91_poweroff_dt_set_wakeup_mode(struct platform_device *pdev) writel(wakeup_mode | mode, at91_shdwc_base + AT91_SHDW_MR); } -static int at91_poweroff_probe(struct platform_device *pdev) +static int __init at91_poweroff_probe(struct platform_device *pdev) { struct resource *res; @@ -140,6 +140,14 @@ static int at91_poweroff_probe(struct platform_device *pdev) return 0; } +static int __exit at91_poweroff_remove(struct platform_device *pdev) +{ + if (pm_power_off == at91_poweroff) + pm_power_off = NULL; + + return 0; +} + static const struct of_device_id at91_poweroff_of_match[] = { { .compatible = "atmel,at91sam9260-shdwc", }, { .compatible = "atmel,at91sam9rl-shdwc", }, @@ -148,10 +156,14 @@ static const struct of_device_id at91_poweroff_of_match[] = { }; static struct platform_driver at91_poweroff_driver = { - .probe = at91_poweroff_probe, + .remove = __exit_p(at91_poweroff_remove), .driver = { .name = "at91-poweroff", .of_match_table = at91_poweroff_of_match, }, }; -module_platform_driver(at91_poweroff_driver); +module_platform_driver_probe(at91_poweroff_driver, at91_poweroff_probe); + +MODULE_AUTHOR("Atmel Corporation"); +MODULE_DESCRIPTION("Shutdown driver for Atmel SoCs"); +MODULE_LICENSE("GPL v2");