ISDN: eicon: switch to use native bitmaps

Two arrays are clearly bit maps, so, make that explicit by converting to
bitmap API and remove custom helpers.

Note sig_ind() uses out of boundary bit to (looks like) protect against
potential bitmap_empty() checks for the same bitmap.

This patch removes that since:
1) that didn't guarantee atomicity anyway;
2) the first operation inside the for-loop is set bit in the bitmap
   (which effectively makes it non-empty);
3) group_optimization() doesn't utilize possible emptiness of the bitmap
   in question.

Thus, if there is a protection needed it should be implemented properly.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/isdn/hardware/eicon/divacapi.h

@@ -26,15 +26,7 @@
 
 /*#define DEBUG */
 
-
-
-
-
-
-
-
-
-
+#include <linux/types.h>
 
 #define IMPLEMENT_DTMF 1
 #define IMPLEMENT_LINE_INTERCONNECT2 1
@@ -82,8 +74,6 @@
 #define CODEC_PERMANENT    0x02
 #define ADV_VOICE          0x03
 #define MAX_CIP_TYPES      5  /* kind of CIP types for group optimization */
-#define C_IND_MASK_DWORDS  ((MAX_APPL + 32) >> 5)
-
 
 #define FAX_CONNECT_INFO_BUFFER_SIZE  256
 #define NCPI_BUFFER_SIZE              256
@@ -265,8 +255,8 @@ struct _PLCI {
 	word          ncci_ring_list;
 	byte          inc_dis_ncci_table[MAX_CHANNELS_PER_PLCI];
 	t_std_internal_command internal_command_queue[MAX_INTERNAL_COMMAND_LEVELS];
-	dword         c_ind_mask_table[C_IND_MASK_DWORDS];
-	dword         group_optimization_mask_table[C_IND_MASK_DWORDS];
+	DECLARE_BITMAP(c_ind_mask_table, MAX_APPL);
+	DECLARE_BITMAP(group_optimization_mask_table, MAX_APPL);
 	byte          RBuffer[200];
 	dword         msg_in_queue[MSG_IN_QUEUE_SIZE/sizeof(dword)];
 	API_SAVE      saved_msg;