apfs/linux-apfs
0
0
Fork 0
mirror of https://github.com/linux-apfs/linux-apfs.git synced 2026-05-01 15:00:59 -07:00
Code Issues Packages Projects Releases Wiki Activity

watchdog: add nowayout helpers to Watchdog Timer Driver Kernel API

Browse Source 
Add two nowayout helpers for the Watchdog Timer Driver Kernel API.
And apply this to the already converted drivers.
Note: s3c2410_wdt lost the nowayout feature during the conversion.

Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Wim Van Sebroeck
2011-11-29 16:24:16 +01:00
parent b8ec61189f
commit ff0b3cd4a4
4 changed files with 28 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files
Documentation/watchdog/watchdog-kernel-api.txt
+9 -1
View File
@@ -1,6 +1,6 @@
The Linux WatchDog Timer Driver Core kernel API.
===============================================
Last reviewed: 22-Jul-2011
Last reviewed: 29-Nov-2011
Wim Van Sebroeck <wim@iguana.be>
@@ -142,6 +142,14 @@ bit-operations. The status bits that are defined are:
* WDOG_NO_WAY_OUT: this bit stores the nowayout setting for the watchdog.
If this bit is set then the watchdog timer will not be able to stop.
To set the WDOG_NO_WAY_OUT status bit (before registering your watchdog
timer device) you can either:
* set it statically in your watchdog_device struct with
.status = WATCHDOG_NOWAYOUT_INIT_STATUS,
(this will set the value the same as CONFIG_WATCHDOG_NOWAYOUT) or
* use the following helper function:
static inline void watchdog_set_nowayout(struct watchdog_device *wdd, int nowayout)
Note: The WatchDog Timer Driver Core supports the magic close feature and
the nowayout feature. To use the magic close feature you must set the
WDIOF_MAGICCLOSE bit in the options field of the watchdog's info structure.