staging: comedi: quatech_daqp_cs: cleanup daqp_cs_attach()

Absorb the code from daqp_cs_config() into this function and
properly return the error if the configuration fails.

Remove the dev_dbg() function trace messages.

Fix the kzalloc(). The preferred form for passing a size of a struct
is:

	p = kzalloc(sizeof(*p), ...);
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/quatech_daqp_cs.c

@@ -944,41 +944,12 @@ static int daqp_pcmcia_config_loop(struct pcmcia_device *p_dev, void *priv_data)
 	return pcmcia_request_io(p_dev);
 }
 
-static void daqp_cs_config(struct pcmcia_device *link)
-{
-	int ret;
-
-	dev_dbg(&link->dev, "daqp_cs_config\n");
-
-	link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
-
-	ret = pcmcia_loop_config(link, daqp_pcmcia_config_loop, NULL);
-	if (ret) {
-		dev_warn(&link->dev, "no configuration found\n");
-		goto failed;
-	}
-
-	ret = pcmcia_request_irq(link, daqp_interrupt);
-	if (ret)
-		goto failed;
-
-	ret = pcmcia_enable_device(link);
-	if (ret)
-		goto failed;
-
-	return;
-
-failed:
-	pcmcia_disable_device(link);
-}
-
 static int daqp_cs_attach(struct pcmcia_device *link)
 {
 	struct local_info_t *local;
+	int ret;
 	int i;
 
-	dev_dbg(&link->dev, "daqp_cs_attach()\n");
-
 	for (i = 0; i < MAX_DEV; i++)
 		if (dev_table[i] == NULL)
 			break;
@@ -988,7 +959,7 @@ static int daqp_cs_attach(struct pcmcia_device *link)
 	}
 
 	/* Allocate space for private device-specific data */
-	local = kzalloc(sizeof(struct local_info_t), GFP_KERNEL);
+	local = kzalloc(sizeof(*local), GFP_KERNEL);
 	if (!local)
 		return -ENOMEM;
 
@@ -997,9 +968,27 @@ static int daqp_cs_attach(struct pcmcia_device *link)
 	local->link = link;
 	link->priv = local;
 
-	daqp_cs_config(link);
+	link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
+
+	ret = pcmcia_loop_config(link, daqp_pcmcia_config_loop, NULL);
+	if (ret) {
+		dev_warn(&link->dev, "no configuration found\n");
+		goto failed;
+	}
+
+	ret = pcmcia_request_irq(link, daqp_interrupt);
+	if (ret)
+		goto failed;
+
+	ret = pcmcia_enable_device(link);
+	if (ret)
+		goto failed;
 
 	return 0;
+
+failed:
+	pcmcia_disable_device(link);
+	return ret;
 }
 
 static void daqp_cs_detach(struct pcmcia_device *link)