Fix spelling fuction -> function in comments

To avoid more patches, I also fixed other spelling
and grammar bugs when they were in the same or
following line:

successfull -> successful
parse -> parses
controler -> controller
controlers -> controllers

Cc: Jiri Kosina <trivial@kernel.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/s390/block/dasd_3990_erp.c b/drivers/s390/block/dasd_3990_erp.c
index 85bfd87..e82d427 100644
--- a/drivers/s390/block/dasd_3990_erp.c
+++ b/drivers/s390/block/dasd_3990_erp.c
@@ -2197,7 +2197,7 @@
 
 /*
  *****************************************************************************
- * main ERP control fuctions (24 and 32 byte sense)
+ * main ERP control functions (24 and 32 byte sense)
  *****************************************************************************
  */