treewide: fix a few typos in comments

- kenrel -> kernel
- whetehr -> whether
- ttt -> tt
- sss -> ss

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/include/linux/posix-clock.h b/include/linux/posix-clock.h
index 7f1183dc..34c4498 100644
--- a/include/linux/posix-clock.h
+++ b/include/linux/posix-clock.h
@@ -45,7 +45,7 @@
  * @timer_create:   Create a new timer
  * @timer_delete:   Remove a previously created timer
  * @timer_gettime:  Get remaining time and interval of a timer
- * @timer_setttime: Set a timer's initial expiration and interval
+ * @timer_settime: Set a timer's initial expiration and interval
  * @fasync:         Optional character device fasync method
  * @mmap:           Optional character device mmap method
  * @open:           Optional character device open method
diff --git a/include/net/genetlink.h b/include/net/genetlink.h
index b4c7c1c..d420f28 100644
--- a/include/net/genetlink.h
+++ b/include/net/genetlink.h
@@ -260,7 +260,7 @@
 
 /**
  * gennlmsg_data - head of message payload
- * @gnlh: genetlink messsage header
+ * @gnlh: genetlink message header
  */
 static inline void *genlmsg_data(const struct genlmsghdr *gnlh)
 {
diff --git a/include/net/netlink.h b/include/net/netlink.h
index 8a3906a..02740a9 100644
--- a/include/net/netlink.h
+++ b/include/net/netlink.h
@@ -290,7 +290,7 @@
 
 /**
  * nlmsg_data - head of message payload
- * @nlh: netlink messsage header
+ * @nlh: netlink message header
  */
 static inline void *nlmsg_data(const struct nlmsghdr *nlh)
 {