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Commit d93187eb authored by Tilman Schmidt's avatar Tilman Schmidt Committed by David S. Miller
Browse files

isdn/gigaset: restructure modem response parser (3) 



Separate CID detection from main parser loop.

Signed-off-by: default avatarTilman Schmidt <tilman@imap.cc>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4df1e525

drivers/isdn/gigaset/ev-layer.c

+19 −37
Original line number Diff line number Diff line
@@ -389,24 +389,6 @@ zsau_resp[] = 
	{NULL,				ZSAU_UNKNOWN}

};



/* retrieve CID from parsed response

 * returns 0 if no CID, -1 if invalid CID, or CID value 1..65535

 */

static int cid_of_response(char *s)

{

	int cid;

	int rc;



	if (s[-1] != ';')

		return 0;	/* no CID separator */

	rc = kstrtoint(s, 10, &cid);

	if (rc)

		return 0;	/* CID not numeric */

	if (cid < 1 || cid > 65535)

		return -1;	/* CID out of range */

	return cid;

}



/* queue event with CID */

static void add_cid_event(struct cardstate *cs, int cid, int type,

			  void *ptr, int parameter)
@@ -451,7 +433,7 @@ void gigaset_handle_modem_response(struct cardstate *cs) 
	unsigned char *argv[MAX_REC_PARAMS + 1];

	int params;

	int i, j;

	char *ptr;

	char *psep, *ptr;

	const struct resp_type_t *rt;

	const struct zsau_resp_t *zr;

	int curarg;
@@ -474,6 +456,18 @@ void gigaset_handle_modem_response(struct cardstate *cs) 
		return;

	}



	/* check for CID */

	psep = strrchr(cs->respdata, ';');

	if (psep &&

	    !kstrtoint(psep + 1, 10, &cid) &&

	    cid >= 1 && cid <= 65535) {

		/* valid CID: chop it off */

		*psep = 0;

	} else {

		/* no valid CID: leave unchanged */

		cid = 0;

	}



	/* parse line */

	argv[0] = cs->respdata;

	params = 1;
@@ -482,29 +476,17 @@ void gigaset_handle_modem_response(struct cardstate *cs) 
		case ';':

		case ',':

		case '=':

			if (params > MAX_REC_PARAMS) {

			cs->respdata[i] = 0;

			if (params > MAX_REC_PARAMS)

				dev_warn(cs->dev,

					 "too many parameters in response\n");

				/* need last parameter (might be CID) */

				params--;

			}

			else

				argv[params++] = cs->respdata + i + 1;

		}



	cid = params > 1 ? cid_of_response(argv[params - 1]) : 0;

	if (cid < 0) {

		gigaset_add_event(cs, &cs->at_state, RSP_INVAL, NULL, 0, NULL);

		return;

	}



	for (j = 1; j < params; ++j)

		argv[j][-1] = 0;



	gig_dbg(DEBUG_EVENT, "CMD received: %s", argv[0]);

	if (cid) {

		--params;

		gig_dbg(DEBUG_EVENT, "CID: %s", argv[params]);

	}

	if (cid)

		gig_dbg(DEBUG_EVENT, "CID: %d", cid);

	gig_dbg(DEBUG_EVENT, "available params: %d", params - 1);

	for (j = 1; j < params; j++)

		gig_dbg(DEBUG_EVENT, "param %d: %s", j, argv[j]);