gigaset: use pr_err() and pr_info()

Switch from private printk wrapper macros to using pr_err() and
pr_info() from linux/kernel.h, at the same time unifying a few
error messages.

Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/isdn/gigaset/interface.c b/drivers/isdn/gigaset/interface.c
index 956381c..94fa84b 100644
--- a/drivers/isdn/gigaset/interface.c
+++ b/drivers/isdn/gigaset/interface.c
@@ -107,7 +107,7 @@
 		return -EBUSY;
 
 	if (!cs->connected) {
-		err("not connected!");
+		pr_err("%s: not connected\n", __func__);
 		return -ENODEV;
 	}
 
@@ -188,7 +188,7 @@
 
 	cs = (struct cardstate *) tty->driver_data;
 	if (!cs) {
-		err("cs==NULL in %s", __func__);
+		pr_err("%s: no cardstate\n", __func__);
 		return;
 	}
 
@@ -222,7 +222,7 @@
 
 	cs = (struct cardstate *) tty->driver_data;
 	if (!cs) {
-		err("cs==NULL in %s", __func__);
+		pr_err("%s: no cardstate\n", __func__);
 		return -ENODEV;
 	}
 
@@ -297,7 +297,7 @@
 
 	cs = (struct cardstate *) tty->driver_data;
 	if (!cs) {
-		err("cs==NULL in %s", __func__);
+		pr_err("%s: no cardstate\n", __func__);
 		return -ENODEV;
 	}
 
@@ -323,7 +323,7 @@
 
 	cs = (struct cardstate *) tty->driver_data;
 	if (!cs) {
-		err("cs==NULL in %s", __func__);
+		pr_err("%s: no cardstate\n", __func__);
 		return -ENODEV;
 	}
 
@@ -354,7 +354,7 @@
 
 	cs = (struct cardstate *) tty->driver_data;
 	if (!cs) {
-		err("cs==NULL in %s", __func__);
+		pr_err("%s: no cardstate\n", __func__);
 		return -ENODEV;
 	}
 
@@ -388,7 +388,7 @@
 
 	cs = (struct cardstate *) tty->driver_data;
 	if (!cs) {
-		err("cs==NULL in %s", __func__);
+		pr_err("%s: no cardstate\n", __func__);
 		return -ENODEV;
 	}
 
@@ -420,7 +420,7 @@
 
 	cs = (struct cardstate *) tty->driver_data;
 	if (!cs) {
-		err("cs==NULL in %s", __func__);
+		pr_err("%s: no cardstate\n", __func__);
 		return -ENODEV;
 	}
 
@@ -451,7 +451,7 @@
 
 	cs = (struct cardstate *) tty->driver_data;
 	if (!cs) {
-		err("cs==NULL in %s", __func__);
+		pr_err("%s: no cardstate\n", __func__);
 		return;
 	}
 
@@ -474,7 +474,7 @@
 
 	cs = (struct cardstate *) tty->driver_data;
 	if (!cs) {
-		err("cs==NULL in %s", __func__);
+		pr_err("%s: no cardstate\n", __func__);
 		return;
 	}
 
@@ -501,7 +501,7 @@
 
 	cs = (struct cardstate *) tty->driver_data;
 	if (!cs) {
-		err("cs==NULL in %s", __func__);
+		pr_err("%s: no cardstate\n", __func__);
 		return;
 	}
 
@@ -701,7 +701,7 @@
 
 	ret = tty_register_driver(tty);
 	if (ret < 0) {
-		err("failed to register tty driver (error %d)", ret);
+		pr_err("error %d registering tty driver\n", ret);
 		goto error;
 	}
 	gig_dbg(DEBUG_IF, "tty driver initialized");
@@ -709,7 +709,7 @@
 	return;
 
 enomem:
-	err("could not allocate tty structures");
+	pr_err("out of memory\n");
 error:
 	if (drv->tty)
 		put_tty_driver(drv->tty);