tree 31e7d3ebbaf94183dc442cbc1628831d2b5cdc40
parent a089361cf5f1d6a5295aa5385238bd044998e1e9
author Wim Van Sebroeck <wim@iguana.be> 1340734041 +0200
committer Wim Van Sebroeck <wim@iguana.be> 1340908856 +0200

watchdog: core: fix WDIOC_GETSTATUS return value

In commit 7a87982420e5e126bfefeb42232d1fd92052794e we added
a wrapper for the WDIOC_GETSTATUS ioctl call. The code results
however in a different behaviour: it returns an error if the
driver doesn't support the status operation. This is not
according to the API that says that when we don't support
the status operation, that we just should return a 0 value.
Only when the device isn't there anymore, we should return an
error.

Signed-off-by: Wim Van Sebroeck <wim@iguana.be>