net/caif: Use pr_fmt

This patch standardizes caif message logging prefixes.

Add #define pr_fmt(fmt) KBUILD_MODNAME ":%s(): " fmt, __func__
Add missing "\n"s to some logging messages
Convert pr_warning to pr_warn

This changes the logging message prefix from CAIF: to caif:
for all uses but caif_socket.c and chnl_net.c.  Those now use
their filename without extension.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/caif/cffrml.c b/net/caif/cffrml.c
index e86a4ca..a445043 100644
--- a/net/caif/cffrml.c
+++ b/net/caif/cffrml.c
@@ -6,6 +6,8 @@
  * License terms: GNU General Public License (GPL) version 2
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ":%s(): " fmt, __func__
+
 #include <linux/stddef.h>
 #include <linux/spinlock.h>
 #include <linux/slab.h>
@@ -32,7 +34,7 @@
 {
 	struct cffrml *this = kmalloc(sizeof(struct cffrml), GFP_ATOMIC);
 	if (!this) {
-		pr_warning("CAIF: %s(): Out of memory\n", __func__);
+		pr_warn("Out of memory\n");
 		return NULL;
 	}
 	caif_assert(offsetof(struct cffrml, layer) == 0);
@@ -83,7 +85,7 @@
 
 	if (cfpkt_setlen(pkt, len) < 0) {
 		++cffrml_rcv_error;
-		pr_err("CAIF: %s():Framing length error (%d)\n", __func__, len);
+		pr_err("Framing length error (%d)\n", len);
 		cfpkt_destroy(pkt);
 		return -EPROTO;
 	}
@@ -99,14 +101,14 @@
 			cfpkt_add_trail(pkt, &tmp, 2);
 			++cffrml_rcv_error;
 			++cffrml_rcv_checsum_error;
-			pr_info("CAIF: %s(): Frame checksum error "
-				"(0x%x != 0x%x)\n", __func__, hdrchks, pktchks);
+			pr_info("Frame checksum error (0x%x != 0x%x)\n",
+				hdrchks, pktchks);
 			return -EILSEQ;
 		}
 	}
 	if (cfpkt_erroneous(pkt)) {
 		++cffrml_rcv_error;
-		pr_err("CAIF: %s(): Packet is erroneous!\n", __func__);
+		pr_err("Packet is erroneous!\n");
 		cfpkt_destroy(pkt);
 		return -EPROTO;
 	}
@@ -132,7 +134,7 @@
 	cfpkt_add_head(pkt, &tmp, 2);
 	cfpkt_info(pkt)->hdr_len += 2;
 	if (cfpkt_erroneous(pkt)) {
-		pr_err("CAIF: %s(): Packet is erroneous!\n", __func__);
+		pr_err("Packet is erroneous!\n");
 		return -EPROTO;
 	}
 	ret = layr->dn->transmit(layr->dn, pkt);