diff options
Diffstat (limited to 'drivers/watchdog/booke_wdt.c')
| -rw-r--r-- | drivers/watchdog/booke_wdt.c | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/drivers/watchdog/booke_wdt.c b/drivers/watchdog/booke_wdt.c index 3ad1e44bef44..932a03f4436a 100644 --- a/drivers/watchdog/booke_wdt.c +++ b/drivers/watchdog/booke_wdt.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Watchdog timer for PowerPC Book-E systems * @@ -5,11 +6,6 @@ * Maintainer: Kumar Gala <galak@kernel.crashing.org> * * Copyright 2005, 2008, 2010-2011 Freescale Semiconductor Inc. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt @@ -25,13 +21,13 @@ /* If the kernel parameter wdt=1, the watchdog will be enabled at boot. * Also, the wdt_period sets the watchdog timer period timeout. * For E500 cpus the wdt_period sets which bit changing from 0->1 will - * trigger a watchog timeout. This watchdog timeout will occur 3 times, the + * trigger a watchdog timeout. This watchdog timeout will occur 3 times, the * first time nothing will happen, the second time a watchdog exception will * occur, and the final time the board will reset. */ -#ifdef CONFIG_PPC_FSL_BOOK3E +#ifdef CONFIG_PPC_E500 #define WDTP(x) ((((x)&0x3)<<30)|(((x)&0x3c)<<15)) #define WDTP_MASK (WDTP(0x3f)) #else @@ -43,8 +39,13 @@ static bool booke_wdt_enabled; module_param(booke_wdt_enabled, bool, 0); static int booke_wdt_period = CONFIG_BOOKE_WDT_DEFAULT_TIMEOUT; module_param(booke_wdt_period, int, 0); +static bool nowayout = WATCHDOG_NOWAYOUT; +module_param(nowayout, bool, 0); +MODULE_PARM_DESC(nowayout, + "Watchdog cannot be stopped once started (default=" + __MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); -#ifdef CONFIG_PPC_FSL_BOOK3E +#ifdef CONFIG_PPC_E500 /* For the specified period, determine the number of seconds * corresponding to the reset time. There will be a watchdog @@ -73,7 +74,7 @@ static unsigned long long period_to_sec(unsigned int period) /* * This procedure will find the highest period which will give a timeout * greater than the one required. e.g. for a bus speed of 66666666 and - * and a parameter of 2 secs, then this procedure will return a value of 38. + * a parameter of 2 secs, then this procedure will return a value of 38. */ static unsigned int sec_to_period(unsigned int secs) { @@ -87,7 +88,7 @@ static unsigned int sec_to_period(unsigned int secs) #define MAX_WDT_TIMEOUT period_to_sec(1) -#else /* CONFIG_PPC_FSL_BOOK3E */ +#else /* CONFIG_PPC_E500 */ static unsigned long long period_to_sec(unsigned int period) { @@ -101,7 +102,7 @@ static unsigned int sec_to_period(unsigned int secs) #define MAX_WDT_TIMEOUT 3 /* from Kconfig */ -#endif /* !CONFIG_PPC_FSL_BOOK3E */ +#endif /* !CONFIG_PPC_E500 */ static void __booke_wdt_set(void *data) { @@ -147,7 +148,7 @@ static void __booke_wdt_enable(void *data) } /** - * booke_wdt_disable - disable the watchdog on the given CPU + * __booke_wdt_disable - disable the watchdog on the given CPU * * This function is called on each CPU. It disables the watchdog on that CPU. * @@ -219,7 +220,6 @@ static void __exit booke_wdt_exit(void) static int __init booke_wdt_init(void) { int ret = 0; - bool nowayout = WATCHDOG_NOWAYOUT; pr_info("powerpc book-e watchdog driver loaded\n"); booke_wdt_info.firmware_version = cur_cpu_spec->pvr_value; |