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authorTilman Schmidt <tilman@imap.cc>2015-03-21 20:15:32 +0100
committerDavid S. Miller <davem@davemloft.net>2015-03-23 21:47:23 +0100
commitd93187eb1021b2ec2d3f3d487e821620c2e5f706 (patch)
treea18d4adbf5f75d616748d74ebcc6854f83124178 /drivers/isdn/gigaset
parentisdn/gigaset: restructure modem response parser (2) (diff)
downloadlinux-d93187eb1021b2ec2d3f3d487e821620c2e5f706.tar.xz
linux-d93187eb1021b2ec2d3f3d487e821620c2e5f706.zip
isdn/gigaset: restructure modem response parser (3)
Separate CID detection from main parser loop. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/isdn/gigaset')
-rw-r--r--drivers/isdn/gigaset/ev-layer.c56
1 files changed, 19 insertions, 37 deletions
diff --git a/drivers/isdn/gigaset/ev-layer.c b/drivers/isdn/gigaset/ev-layer.c
index b2a1fb1326ae..dc6e6a396531 100644
--- a/drivers/isdn/gigaset/ev-layer.c
+++ b/drivers/isdn/gigaset/ev-layer.c
@@ -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--;
- }
- argv[params++] = cs->respdata + i + 1;
+ 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]);