diff options
109 files changed, 1786 insertions, 2840 deletions
diff --git a/Documentation/watchdog/00-INDEX b/Documentation/watchdog/00-INDEX deleted file mode 100644 index fc9082a1477..00000000000 --- a/Documentation/watchdog/00-INDEX +++ /dev/null @@ -1,19 +0,0 @@ -00-INDEX - - this file. -convert_drivers_to_kernel_api.txt - - how-to for converting old watchdog drivers to the new kernel API. -hpwdt.txt - - information on the HP iLO2 NMI watchdog -pcwd-watchdog.txt - - documentation for Berkshire Products PC Watchdog ISA cards. -src/ - - directory holding watchdog related example programs. -watchdog-api.txt - - description of the Linux Watchdog driver API. -watchdog-kernel-api.txt - - description of the Linux WatchDog Timer Driver Core kernel API. -watchdog-parameters.txt - - information on driver parameters (for drivers other than - the ones that have driver-specific files here) -wdt.txt - - description of the Watchdog Timer Interfaces for Linux. diff --git a/Documentation/watchdog/convert_drivers_to_kernel_api.txt b/Documentation/watchdog/convert_drivers_to_kernel_api.txt index be8119bb15d..271b8850dde 100644 --- a/Documentation/watchdog/convert_drivers_to_kernel_api.txt +++ b/Documentation/watchdog/convert_drivers_to_kernel_api.txt @@ -59,6 +59,10 @@ Here is a overview of the functions and probably needed actions: WDIOC_GETTIMEOUT: No preparations needed + WDIOC_GETTIMELEFT: + It needs get_timeleft() callback to be defined. Otherwise it + will return EOPNOTSUPP + Other IOCTLs can be served using the ioctl-callback. Note that this is mainly intended for porting old drivers; new drivers should not invent private IOCTLs. Private IOCTLs are processed first. When the callback returns with diff --git a/Documentation/watchdog/watchdog-kernel-api.txt b/Documentation/watchdog/watchdog-kernel-api.txt index 9e162465b0c..227f6cd0e5f 100644 --- a/Documentation/watchdog/watchdog-kernel-api.txt +++ b/Documentation/watchdog/watchdog-kernel-api.txt @@ -1,6 +1,6 @@ The Linux WatchDog Timer Driver Core kernel API. =============================================== -Last reviewed: 29-Nov-2011 +Last reviewed: 16-Mar-2012 Wim Van Sebroeck <wim@iguana.be> @@ -77,6 +77,7 @@ struct watchdog_ops { int (*ping)(struct watchdog_device *); unsigned int (*status)(struct watchdog_device *); int (*set_timeout)(struct watchdog_device *, unsigned int); + unsigned int (*get_timeleft)(struct watchdog_device *); long (*ioctl)(struct watchdog_device *, unsigned int, unsigned long); }; @@ -117,11 +118,13 @@ they are supported. These optional routines/operations are: status of the device is reported with watchdog WDIOF_* status flags/bits. * set_timeout: this routine checks and changes the timeout of the watchdog timer device. It returns 0 on success, -EINVAL for "parameter out of range" - and -EIO for "could not write value to the watchdog". On success the timeout - value of the watchdog_device will be changed to the value that was just used - to re-program the watchdog timer device. + and -EIO for "could not write value to the watchdog". On success this + routine should set the timeout value of the watchdog_device to the + achieved timeout value (which may be different from the requested one + because the watchdog does not necessarily has a 1 second resolution). (Note: the WDIOF_SETTIMEOUT needs to be set in the options field of the watchdog's info structure). +* get_timeleft: this routines returns the time that's left before a reset. * ioctl: if this routine is present then it will be called first before we do our own internal ioctl call handling. This routine should return -ENOIOCTLCMD if a command is not supported. The parameters that are passed to the ioctl diff --git a/drivers/char/ipmi/ipmi_watchdog.c b/drivers/char/ipmi/ipmi_watchdog.c index 34767a6d7f4..020a6aec2d8 100644 --- a/drivers/char/ipmi/ipmi_watchdog.c +++ b/drivers/char/ipmi/ipmi_watchdog.c @@ -153,7 +153,7 @@ #endif static DEFINE_MUTEX(ipmi_watchdog_mutex); -static int nowayout = WATCHDOG_NOWAYOUT; +static bool nowayout = WATCHDOG_NOWAYOUT; static ipmi_user_t watchdog_user; static int watchdog_ifnum; @@ -320,7 +320,7 @@ module_param(start_now, int, 0444); MODULE_PARM_DESC(start_now, "Set to 1 to start the watchdog as" "soon as the driver is loaded."); -module_param(nowayout, int, 0644); +module_param(nowayout, bool, 0644); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started " "(default=CONFIG_WATCHDOG_NOWAYOUT)"); diff --git a/drivers/hwmon/fschmd.c b/drivers/hwmon/fschmd.c index 8305d29459b..519ce8b9c14 100644 --- a/drivers/hwmon/fschmd.c +++ b/drivers/hwmon/fschmd.c @@ -53,8 +53,8 @@ static const unsigned short normal_i2c[] = { 0x73, I2C_CLIENT_END }; /* Insmod parameters */ -static int nowayout = WATCHDOG_NOWAYOUT; -module_param(nowayout, 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) ")"); diff --git a/drivers/hwmon/w83793.c b/drivers/hwmon/w83793.c index 834e49d1827..d6b0bdd4865 100644 --- a/drivers/hwmon/w83793.c +++ b/drivers/hwmon/w83793.c @@ -71,8 +71,8 @@ MODULE_PARM_DESC(timeout, "Watchdog timeout in minutes. 2<= timeout <=255 (default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ")"); -static int nowayout = WATCHDOG_NOWAYOUT; -module_param(nowayout, 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) ")"); diff --git a/drivers/staging/mei/wd.c b/drivers/staging/mei/wd.c index a6910da78a6..cf4c29d10e7 100644 --- a/drivers/staging/mei/wd.c +++ b/drivers/staging/mei/wd.c @@ -323,6 +323,7 @@ static int mei_wd_ops_set_timeout(struct watchdog_device *wd_dev, unsigned int t mutex_lock(&dev->device_lock); dev->wd_timeout = timeout; + wd_dev->timeout = timeout; mei_wd_set_start_timeout(dev, dev->wd_timeout); mutex_unlock(&dev->device_lock); diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index 0e7366dfc90..37096246c93 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -55,6 +55,7 @@ comment "Watchdog Device Drivers" config SOFT_WATCHDOG tristate "Software watchdog" + select WATCHDOG_CORE help A software monitoring watchdog. This will fail to reboot your system from some situations that the hardware watchdog will recover @@ -74,6 +75,7 @@ config WM831X_WATCHDOG config WM8350_WATCHDOG tristate "WM8350 watchdog" depends on MFD_WM8350 + select WATCHDOG_CORE help Support for the watchdog in the WM8350 AudioPlus PMIC. When the watchdog triggers the system will be reset. @@ -217,6 +219,7 @@ config MPCORE_WATCHDOG config EP93XX_WATCHDOG tristate "EP93xx Watchdog" depends on ARCH_EP93XX + select WATCHDOG_CORE help Say Y here if to include support for the watchdog timer embedded in the Cirrus Logic EP93xx family of devices. @@ -234,6 +237,7 @@ config OMAP_WATCHDOG config PNX4008_WATCHDOG tristate "PNX4008 and LPC32XX Watchdog" depends on ARCH_PNX4008 || ARCH_LPC32XX + select WATCHDOG_CORE help Say Y here if to include support for the watchdog timer in the PNX4008 or LPC32XX processor. @@ -283,6 +287,7 @@ config COH901327_WATCHDOG bool "ST-Ericsson COH 901 327 watchdog" depends on ARCH_U300 default y if MACH_U300 + select WATCHDOG_CORE help Say Y here to include Watchdog timer support for the watchdog embedded into the ST-Ericsson U300 series platforms. @@ -328,6 +333,7 @@ config TS72XX_WATCHDOG config MAX63XX_WATCHDOG tristate "Max63xx watchdog" depends on ARM && HAS_IOMEM + select WATCHDOG_CORE help Support for memory mapped max63{69,70,71,72,73,74} watchdog timer. @@ -955,6 +961,7 @@ config INDYDOG config JZ4740_WDT tristate "Ingenic jz4740 SoC hardware watchdog" depends on MACH_JZ4740 + select WATCHDOG_CORE help Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs. @@ -996,6 +1003,7 @@ config AR7_WDT config TXX9_WDT tristate "Toshiba TXx9 Watchdog Timer" depends on CPU_TX39XX || CPU_TX49XX + select WATCHDOG_CORE help Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs. diff --git a/drivers/watchdog/acquirewdt.c b/drivers/watchdog/acquirewdt.c index b6a2b58cbe6..4397881c83f 100644 --- a/ |