[PATCH] dvb: dst: remove redundant checksum calculation

removes the redundant checksum calculation, which was also exported from the
dst.c module

Signed-off-by: Perceval Anichini <perceval.anichini@streamvision.fr>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Cc: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 5 insertions, 19 deletions

diff --git a/drivers/media/dvb/bt8xx/dst_ca.c b/drivers/media/dvb/bt8xx/dst_ca.c
index f77fda77b638..16645e06dea2 100644
--- a/drivers/media/dvb/bt8xx/dst_ca.c
+++ b/drivers/media/dvb/bt8xx/dst_ca.c
@@ -69,26 +69,12 @@ static int ca_set_pid(void)
 }
 
 
-static int put_checksum(u8 *check_string, int length)
+static void put_checksum(u8 *check_string, int length)
 {
-        u8 i = 0, checksum = 0;
-
-        dprintk(verbose, DST_CA_DEBUG, 1, " ========================= Checksum calculation ===========================");
-        dprintk(verbose, DST_CA_DEBUG, 1, " String Length=[0x%02x]", length);
-        dprintk(verbose, DST_CA_DEBUG, 1, " String=[");
-
-        while (i < length) {
-                dprintk(verbose, DST_CA_DEBUG, 0, " %02x", check_string[i]);
-                checksum += check_string[i];
-                i++;
-        }
-        dprintk(verbose, DST_CA_DEBUG, 0, " ]\n");
-        dprintk(verbose, DST_CA_DEBUG, 1, "Sum=[%02x]\n", checksum);
-        check_string[length] = ~checksum + 1;
-        dprintk(verbose, DST_CA_DEBUG, 1, " Checksum=[%02x]", check_string[length]);
-        dprintk(verbose, DST_CA_DEBUG, 1, " ==========================================================================");
-
-        return 0;
+        dprintk(verbose, DST_CA_DEBUG, 1, " Computing string checksum.");
+        dprintk(verbose, DST_CA_DEBUG, 1, "  -> string length : 0x%02x", length);
+        check_string[length] = dst_check_sum (check_string, length);
+        dprintk(verbose, DST_CA_DEBUG, 1, "  -> checksum      : 0x%02x", check_string[length]);
 }
 
 static int dst_ci_command(struct dst_state* state, u8 * data, u8 *ca_string, u8 len, int read)