diff --git a/drivers/isdn/i4l/isdn_ppp.c b/drivers/isdn/i4l/isdn_ppp.c
index 9f5fe37..127cfda 100644
--- a/drivers/isdn/i4l/isdn_ppp.c
+++ b/drivers/isdn/i4l/isdn_ppp.c
@@ -110,7 +110,7 @@
 
 	if (lp->ppp_slot < 0 || lp->ppp_slot >= ISDN_MAX_CHANNELS) {
 		printk(KERN_ERR "%s: ppp_slot(%d) out of range\n",
-			__FUNCTION__, lp->ppp_slot);
+			__func__, lp->ppp_slot);
 		return 0;
 	}
 
@@ -127,7 +127,7 @@
 #endif /* CONFIG_ISDN_MPP */
 	if (lp->ppp_slot < 0 || lp->ppp_slot >= ISDN_MAX_CHANNELS) {
 		printk(KERN_ERR "%s: ppp_slot(%d) now invalid\n",
-			__FUNCTION__, lp->ppp_slot);
+			__func__, lp->ppp_slot);
 		return 0;
 	}
 	is = ippp_table[lp->ppp_slot];
@@ -226,7 +226,7 @@
 {
 	if (lp->ppp_slot < 0 || lp->ppp_slot >= ISDN_MAX_CHANNELS) {
 		printk(KERN_ERR "%s: ppp_slot(%d) out of range\n",
-			__FUNCTION__, lp->ppp_slot);
+			__func__, lp->ppp_slot);
 		return;
 	}
 	ippp_table[lp->ppp_slot]->state = IPPP_OPEN | IPPP_CONNECT | IPPP_NOBLOCK;
@@ -245,7 +245,7 @@
 
 	if (slot < 0 || slot >= ISDN_MAX_CHANNELS) {
 		printk(KERN_ERR "%s: slot(%d) out of range\n",
-			__FUNCTION__, slot);
+			__func__, slot);
 		return 0;
 	}
 	is = ippp_table[slot];
@@ -343,7 +343,7 @@
 	is = file->private_data;
 
 	if (!is) {
-		printk(KERN_ERR "%s: no file->private_data\n", __FUNCTION__);
+		printk(KERN_ERR "%s: no file->private_data\n", __func__);
 		return;
 	}
 	if (is->debug & 0x1)
@@ -353,7 +353,7 @@
 		isdn_net_dev *p = is->lp->netdev;
 
 		if (!p) {
-			printk(KERN_ERR "%s: no lp->netdev\n", __FUNCTION__);
+			printk(KERN_ERR "%s: no lp->netdev\n", __func__);
 			return;
 		}
 		is->state &= ~IPPP_CONNECT;	/* -> effect: no call of wakeup */
@@ -1080,7 +1080,7 @@
 				printk(KERN_DEBUG "isdn_ppp: VJC_UNCOMP\n");
 			if (net_dev->local->ppp_slot < 0) {
 				printk(KERN_ERR "%s: net_dev->local->ppp_slot(%d) out of range\n",
-					__FUNCTION__, net_dev->local->ppp_slot);
+					__func__, net_dev->local->ppp_slot);
 				goto drop_packet;
 			}
 			if (slhc_remember(ippp_table[net_dev->local->ppp_slot]->slcomp, skb->data, skb->len) <= 0) {
@@ -1107,7 +1107,7 @@
 							  skb_old->len);
 				if (net_dev->local->ppp_slot < 0) {
 					printk(KERN_ERR "%s: net_dev->local->ppp_slot(%d) out of range\n",
-						__FUNCTION__, net_dev->local->ppp_slot);
+						__func__, net_dev->local->ppp_slot);
 					goto drop_packet;
 				}
 				pkt_len = slhc_uncompress(ippp_table[net_dev->local->ppp_slot]->slcomp,
@@ -1553,7 +1553,7 @@
 
 	if (lp->ppp_slot < 0) {
 		printk(KERN_ERR "%s: lp->ppp_slot(%d) out of range\n",
-			__FUNCTION__, lp->ppp_slot);
+			__func__, lp->ppp_slot);
 		return(-EINVAL);
 	}
 
@@ -1604,7 +1604,7 @@
 	slot = lp->ppp_slot;
 	if (slot < 0 || slot >= ISDN_MAX_CHANNELS) {
 		printk(KERN_ERR "%s: lp->ppp_slot(%d)\n",
-			__FUNCTION__, lp->ppp_slot);
+			__func__, lp->ppp_slot);
 		stats->frame_drops++;
 		dev_kfree_skb(skb);
 		spin_unlock_irqrestore(&mp->lock, flags);
@@ -1641,7 +1641,7 @@
 		slot = lpq->ppp_slot;
 		if (slot < 0 || slot >= ISDN_MAX_CHANNELS) {
 			printk(KERN_ERR "%s: lpq->ppp_slot(%d)\n",
-				__FUNCTION__, lpq->ppp_slot);
+				__func__, lpq->ppp_slot);
 		} else {
 			u32 lls = ippp_table[slot]->last_link_seqno;
 			if (MP_LT(lls, minseq))
@@ -1875,7 +1875,7 @@
 
 	if (lp->ppp_slot < 0 || lp->ppp_slot >= ISDN_MAX_CHANNELS) {
 		printk(KERN_ERR "%s: lp->ppp_slot(%d) out of range\n",
-			__FUNCTION__, lp->ppp_slot);
+			__func__, lp->ppp_slot);
 		return;
 	}
 	if( MP_FLAGS(from) == (MP_BEGIN_FRAG | MP_END_FRAG) ) {
@@ -2655,7 +2655,7 @@
 		lp->ppp_slot);
 	if (lp->ppp_slot < 0 || lp->ppp_slot >= ISDN_MAX_CHANNELS) {
 		printk(KERN_ERR "%s: lp->ppp_slot(%d) out of range\n",
-			__FUNCTION__, lp->ppp_slot);
+			__func__, lp->ppp_slot);
 		return;
 	}
 	is = ippp_table[lp->ppp_slot];
@@ -2665,7 +2665,7 @@
 		int slot = ((isdn_net_local *) (lp->master->priv))->ppp_slot;
 		if (slot < 0 || slot >= ISDN_MAX_CHANNELS) {
 			printk(KERN_ERR "%s: slot(%d) out of range\n",
-				__FUNCTION__, slot);
+				__func__, slot);
 			return;
 		}	
 		mis = ippp_table[slot];
@@ -2829,7 +2829,7 @@
 		return;
 	if (slot < 0 || slot >= ISDN_MAX_CHANNELS) {
 		printk(KERN_ERR "%s: lp->ppp_slot(%d) out of range\n",
-			__FUNCTION__, slot);
+			__func__, slot);
 		return;
 	}	
 	is = ippp_table[slot];
@@ -2852,7 +2852,7 @@
 		slot = ((isdn_net_local *) (lp->master->priv))->ppp_slot;
 		if (slot < 0 || slot >= ISDN_MAX_CHANNELS) {
 			printk(KERN_ERR "%s: slot(%d) out of range\n",
-				__FUNCTION__, slot);
+				__func__, slot);
 			return;
 		}	
 		mis = ippp_table[slot];