Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi...

[firefly-linux-kernel-4.4.55.git] / Documentation / watchdog / convert_drivers_to_kernel_api.txt

diff --git a/Documentation/watchdog/convert_drivers_to_kernel_api.txt b/Documentation/watchdog/convert_drivers_to_kernel_api.txt
index be8119bb15d209f98012c24159d0ff2b78c0eebf..271b8850dde76af34470123fd95cdbc0fca21111 100644 (file)
--- 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