bring back the echocan-params code that was removed in r3545, this time with a small change made to ensure backwards compatibility with existing applications at both the binary and source code level

git-svn-id: http://svn.digium.com/svn/zaptel/branches/1.4@3589 5390a7c7-147a-4af0-8ec9-7488f05a26cb

1 files changed, 9 insertions, 5 deletions

diff --git a/hpec/hpec_zaptel.h b/hpec/hpec_zaptel.h
index 80004da..2fb5a14 100644
--- a/hpec/hpec_zaptel.h
+++ b/hpec/hpec_zaptel.h
@@ -87,18 +87,22 @@ static inline void echo_can_array_update(struct echo_can_state *ec, short *iref,
 
 DECLARE_MUTEX(alloc_lock);
 
-static inline struct echo_can_state *echo_can_create(int len, int adaption_mode)
+static int echo_can_create(struct zt_echocanparams *ecp, struct zt_echocanparam *p,
+			   struct echo_can_state **ec)
 {
-	struct echo_can_state *result = NULL;
+	if (ecp->param_count > 0) {
+		printk(KERN_WARNING "HPEC does not support parameters; failing request\n");
+		return -EINVAL;
+	}
 
 	if (down_interruptible(&alloc_lock))
-		return NULL;
+		return -ENOTTY;
 
-	result = hpec_channel_alloc(len);
+	*ec = hpec_channel_alloc(ecp->tap_length);
 
 	up(&alloc_lock);
 
-	return result;
+	return *ec ? 0 : -ENOTTY;
 }
 
 static inline int echo_can_traintap(struct echo_can_state *ec, int pos, short val)