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Commit 4fbbc7ee authored by Perceval Anichini's avatar Perceval Anichini Committed by Linus Torvalds
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[PATCH] dvb: dst: remove redundant checksum calculation 



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

Signed-off-by: default avatarPerceval Anichini <perceval.anichini@streamvision.fr>
Signed-off-by: default avatarManu Abraham <manu@linuxtv.org>
Signed-off-by: default avatarMichael Krufky <mkrufky@linuxtv.org>
Cc: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent f5648e8a

drivers/media/dvb/bt8xx/dst_ca.c

+5 −19
Original line number Diff line number Diff line
@@ -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)