greybus: es2: don't assume just one AP bridge

Previously we had only one AP bridge connected to the AP.  We will
now have two.  Now that the have moved the logging related symbols
into the AP device, we can stop assuming there's only on of them.

Specifically, rename symbols like "apb1_*" to be just "apb_*",
because the "1" is no longer meaningful.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

drivers/staging/greybus/es2.c

@@ -94,10 +94,10 @@ struct es2_cport_out {
  *			corresponding @cport_out_urb is being cancelled
  * @cport_out_urb_lock: locks the @cport_out_urb_busy "list"
  *
- * @apb1_log_task: task pointer for logging thread
- * @apb1_log_dentry: file system entry for the log file interface
- * @apb1_log_enable_dentry: file system entry for enabling logging
- * @apb1_log_fifo: kernel FIFO to carry logged data
+ * @apb_log_task: task pointer for logging thread
+ * @apb_log_dentry: file system entry for the log file interface
+ * @apb_log_enable_dentry: file system entry for enabling logging
+ * @apb_log_fifo: kernel FIFO to carry logged data
  */
 struct es2_ap_dev {
 	struct usb_device *usb_dev;
@@ -113,10 +113,10 @@ struct es2_ap_dev {
 
 	int *cport_to_ep;
 
-	struct task_struct *apb1_log_task;
-	struct dentry *apb1_log_dentry;
-	struct dentry *apb1_log_enable_dentry;
-	DECLARE_KFIFO(apb1_log_fifo, char, APB1_LOG_SIZE);
+	struct task_struct *apb_log_task;
+	struct dentry *apb_log_dentry;
+	struct dentry *apb_log_enable_dentry;
+	DECLARE_KFIFO(apb_log_fifo, char, APB1_LOG_SIZE);
 };
 
 /**
@@ -617,7 +617,7 @@ static void cport_out_callback(struct urb *urb)
 }
 
 #define APB1_LOG_MSG_SIZE	64
-static void apb1_log_get(struct es2_ap_dev *es2, char *buf)
+static void apb_log_get(struct es2_ap_dev *es2, char *buf)
 {
 	int retval;
 
@@ -632,11 +632,11 @@ static void apb1_log_get(struct es2_ap_dev *es2, char *buf)
 					APB1_LOG_MSG_SIZE,
 					ES2_TIMEOUT);
 		if (retval > 0)
-			kfifo_in(&es2->apb1_log_fifo, buf, retval);
+			kfifo_in(&es2->apb_log_fifo, buf, retval);
 	} while (retval > 0);
 }
 
-static int apb1_log_poll(void *data)
+static int apb_log_poll(void *data)
 {
 	struct es2_ap_dev *es2 = data;
 	char *buf;
@@ -647,7 +647,7 @@ static int apb1_log_poll(void *data)
 
 	while (!kthread_should_stop()) {
 		msleep(1000);
-		apb1_log_get(es2, buf);
+		apb_log_get(es2, buf);
 	}
 
 	kfree(buf);
@@ -655,7 +655,7 @@ static int apb1_log_poll(void *data)
 	return 0;
 }
 
-static ssize_t apb1_log_read(struct file *f, char __user *buf,
+static ssize_t apb_log_read(struct file *f, char __user *buf,
 				size_t count, loff_t *ppos)
 {
 	struct es2_ap_dev *es2 = f->f_inode->i_private;
@@ -670,7 +670,7 @@ static ssize_t apb1_log_read(struct file *f, char __user *buf,
 	if (!tmp_buf)
 		return -ENOMEM;
 
-	copied = kfifo_out(&es2->apb1_log_fifo, tmp_buf, count);
+	copied = kfifo_out(&es2->apb_log_fifo, tmp_buf, count);
 	ret = simple_read_from_buffer(buf, count, ppos, tmp_buf, copied);
 
 	kfree(tmp_buf);
@@ -678,48 +678,49 @@ static ssize_t apb1_log_read(struct file *f, char __user *buf,
 	return ret;
 }
 
-static const struct file_operations apb1_log_fops = {
-	.read	= apb1_log_read,
+static const struct file_operations apb_log_fops = {
+	.read	= apb_log_read,
 };
 
 static void usb_log_enable(struct es2_ap_dev *es2)
 {
-	if (!IS_ERR_OR_NULL(es2->apb1_log_task))
+	if (!IS_ERR_OR_NULL(es2->apb_log_task))
 		return;
 
 	/* get log from APB1 */
-	es2->apb1_log_task = kthread_run(apb1_log_poll, es2, "apb1_log");
-	if (IS_ERR(es2->apb1_log_task))
+	es2->apb_log_task = kthread_run(apb_log_poll, es2, "apb_log");
+	if (IS_ERR(es2->apb_log_task))
 		return;
-	es2->apb1_log_dentry = debugfs_create_file("apb1_log", S_IRUGO,
+	/* XXX We will need to rename this per APB */
+	es2->apb_log_dentry = debugfs_create_file("apb_log", S_IRUGO,
 						gb_debugfs_get(), NULL,
-						&apb1_log_fops);
+						&apb_log_fops);
 }
 
 static void usb_log_disable(struct es2_ap_dev *es2)
 {
-	if (IS_ERR_OR_NULL(es2->apb1_log_task))
+	if (IS_ERR_OR_NULL(es2->apb_log_task))
 		return;
 
-	debugfs_remove(es2->apb1_log_dentry);
-	es2->apb1_log_dentry = NULL;
+	debugfs_remove(es2->apb_log_dentry);
+	es2->apb_log_dentry = NULL;
 
-	kthread_stop(es2->apb1_log_task);
-	es2->apb1_log_task = NULL;
+	kthread_stop(es2->apb_log_task);
+	es2->apb_log_task = NULL;
 }
 
-static ssize_t apb1_log_enable_read(struct file *f, char __user *buf,
+static ssize_t apb_log_enable_read(struct file *f, char __user *buf,
 				size_t count, loff_t *ppos)
 {
 	struct es2_ap_dev *es2 = f->f_inode->i_private;
-	int enable = !IS_ERR_OR_NULL(es2->apb1_log_task);
+	int enable = !IS_ERR_OR_NULL(es2->apb_log_task);
 	char tmp_buf[3];
 
 	sprintf(tmp_buf, "%d\n", enable);
 	return simple_read_from_buffer(buf, count, ppos, tmp_buf, 3);
 }
 
-static ssize_t apb1_log_enable_write(struct file *f, const char __user *buf,
+static ssize_t apb_log_enable_write(struct file *f, const char __user *buf,
 				size_t count, loff_t *ppos)
 {
 	int enable;
@@ -738,12 +739,12 @@ static ssize_t apb1_log_enable_write(struct file *f, const char __user *buf,
 	return count;
 }
 
-static const struct file_operations apb1_log_enable_fops = {
-	.read	= apb1_log_enable_read,
-	.write	= apb1_log_enable_write,
+static const struct file_operations apb_log_enable_fops = {
+	.read	= apb_log_enable_read,
+	.write	= apb_log_enable_write,
 };
 
-static int apb1_get_cport_count(struct usb_device *udev)
+static int apb_get_cport_count(struct usb_device *udev)
 {
 	int retval;
 	__le16 *cport_count;
@@ -799,7 +800,7 @@ static int ap_probe(struct usb_interface *interface,
 
 	udev = usb_get_dev(interface_to_usbdev(interface));
 
-	num_cports = apb1_get_cport_count(udev);
+	num_cports = apb_get_cport_count(udev);
 	if (num_cports < 0) {
 		usb_put_dev(udev);
 		dev_err(&udev->dev, "Cannot retrieve CPort count: %d\n",
@@ -819,7 +820,7 @@ static int ap_probe(struct usb_interface *interface,
 	es2->usb_intf = interface;
 	es2->usb_dev = udev;
 	spin_lock_init(&es2->cport_out_urb_lock);
-	INIT_KFIFO(es2->apb1_log_fifo);
+	INIT_KFIFO(es2->apb_log_fifo);
 	usb_set_intfdata(interface, es2);
 
 	es2->cport_to_ep = kcalloc(hd->num_cports, sizeof(*es2->cport_to_ep),
@@ -892,10 +893,11 @@ static int ap_probe(struct usb_interface *interface,
 		es2->cport_out_urb_busy[i] = false;	/* just to be anal */
 	}
 
-	es2->apb1_log_enable_dentry = debugfs_create_file("apb1_log_enable",
+	/* XXX We will need to rename this per APB */
+	es2->apb_log_enable_dentry = debugfs_create_file("apb_log_enable",
 							(S_IWUSR | S_IRUGO),
 							gb_debugfs_get(), es2,
-							&apb1_log_enable_fops);
+							&apb_log_enable_fops);
 	return 0;
 error:
 	ap_disconnect(interface);