Staging: comedi: removed "depricated" from COMEDI_CB_BLOCK

The flag COMEDI_CB_BLOCK was marked as "depricated in the header file".
However, this flag is important to wake up the data-reader (and writer)
after new data has arrived from(for) the DAQ card.
Signed-off-by: NBernd Porr <berndporr@f2s.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/staging/comedi/comedi.h

@@ -451,7 +451,7 @@
 
 #define COMEDI_CB_EOS		1	/* end of scan */
 #define COMEDI_CB_EOA		2	/* end of acquisition */
-#define COMEDI_CB_BLOCK		4	/* DEPRECATED: convenient block size */
+#define COMEDI_CB_BLOCK		4	/* data has arrived: wakes up read() / write() */
 #define COMEDI_CB_EOBUF		8	/* DEPRECATED: end of buffer */
 #define COMEDI_CB_ERROR		16	/* card error during acquisition */
 #define COMEDI_CB_OVERFLOW	32	/* buffer overflow/underflow */