diff --git a/drivers/dahdi/dahdi-base.c b/drivers/dahdi/dahdi-base.c
index 124ac6a..dbf8e87 100644
--- a/drivers/dahdi/dahdi-base.c
+++ b/drivers/dahdi/dahdi-base.c
@@ -3067,7 +3067,7 @@ static int ioctl_load_zone(unsigned long data)
 		return -ENOMEM;
 	}
 
-	ptr += sizeof(*z);
+	ptr = (char *) ptr + sizeof(*z);
 	space -= sizeof(*z);
 
 	dahdi_copy_string(z->name, work->th.name, sizeof(z->name));
@@ -3109,7 +3109,7 @@ static int ioctl_load_zone(unsigned long data)
 			t = work->samples[x] = ptr;
 
 			space -= sizeof(*t);
-			ptr += sizeof(*t);
+			ptr = (char *) ptr + sizeof(*t);
 
 			/* Remember which sample is work->next */
 			work->next[x] = work->td.next;
diff --git a/drivers/dahdi/dahdi_echocan_kb1.c b/drivers/dahdi/dahdi_echocan_kb1.c
index 94f8523..7433d3e 100644
--- a/drivers/dahdi/dahdi_echocan_kb1.c
+++ b/drivers/dahdi/dahdi_echocan_kb1.c
@@ -266,7 +266,7 @@ static inline short get_cc_s(echo_can_cb_s *cb, int pos)
 
 static inline void init_cc(struct ec_pvt *pvt, int N, int maxy, int maxu)
 {
-	void *ptr = pvt;
+	char *ptr = (char *) pvt;
 	unsigned long tmp;
 
 	/* Double-word align past end of state */
@@ -281,9 +281,9 @@ static inline void init_cc(struct ec_pvt *pvt, int N, int maxy, int maxu)
 	pvt->beta2_i = DEFAULT_BETA1_I;
   
 	/* Allocate coefficient memory */
-	pvt->a_i = ptr;
+	pvt->a_i = (int *) ptr;
 	ptr += (sizeof(int) * pvt->N_d);
-	pvt->a_s = ptr;
+	pvt->a_s = (short *) ptr;
 	ptr += (sizeof(short) * pvt->N_d);
 
 	/* Reset Y circular buffer (short version) */
diff --git a/drivers/dahdi/dahdi_echocan_mg2.c b/drivers/dahdi/dahdi_echocan_mg2.c
index 5dfd882..b2a102d 100644
--- a/drivers/dahdi/dahdi_echocan_mg2.c
+++ b/drivers/dahdi/dahdi_echocan_mg2.c
@@ -307,7 +307,7 @@ static inline short get_cc_s(echo_can_cb_s *cb, int pos)
 
 static inline void init_cc(struct ec_pvt *pvt, int N, int maxy, int maxu)
 {
-	void *ptr = pvt;
+	char *ptr = (char *) pvt;
 	unsigned long tmp;
 
 	/* Double-word align past end of state */
@@ -322,15 +322,15 @@ static inline void init_cc(struct ec_pvt *pvt, int N, int maxy, int maxu)
 	pvt->beta2_i = DEFAULT_BETA1_I;
   
 	/* Allocate coefficient memory */
-	pvt->a_i = ptr;
+	pvt->a_i = (int *) ptr;
 	ptr += (sizeof(int) * pvt->N_d);
-	pvt->a_s = ptr;
+	pvt->a_s = (short *) ptr;
 	ptr += (sizeof(short) * pvt->N_d);
 
 	/* Allocate backup memory */
-	pvt->b_i = ptr;
+	pvt->b_i = (int *) ptr;
 	ptr += (sizeof(int) * pvt->N_d);
-	pvt->c_i = ptr;
+	pvt->c_i = (int *) ptr;
 	ptr += (sizeof(int) * pvt->N_d);
 
 	/* Reset Y circular buffer (short version) */
@@ -387,7 +387,7 @@ static void echo_can_free(struct dahdi_chan *chan, struct dahdi_echocan_state *e
 }
 
 #ifdef DC_NORMALIZE
-short inline dc_removal(int *dc_estimate, short samp)
+static inline short dc_removal(int *dc_estimate, short samp)
 {
 	*dc_estimate += ((((int)samp << 15) - *dc_estimate) >> 9);
 	return samp - (*dc_estimate >> 15);