[PATCH] USB: converted auerswald over to new usb_register_dev() changes.

1 files changed, 20 insertions, 51 deletions

diff --git a/drivers/usb/misc/auerswald.c b/drivers/usb/misc/auerswald.c
index 553206cd2390..851bb1dcf22a 100644
--- a/drivers/usb/misc/auerswald.c
+++ b/drivers/usb/misc/auerswald.c
@@ -29,7 +29,6 @@
 #include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/init.h>
-#include <linux/devfs_fs_kernel.h>
 #undef DEBUG   		/* include debug macros until it's done	*/
 #include <linux/usb.h>
 
@@ -60,16 +59,10 @@ do {			\
 /* Auerswald Vendor ID */
 #define ID_AUERSWALD  	0x09BF
 
-#ifdef CONFIG_USB_DYNAMIC_MINORS
-/* we can have up to 256 devices at once */
-#define AUER_MINOR_BASE	0
-#define AUER_MAX_DEVICES 256
-#else
 #define AUER_MINOR_BASE	112	/* auerswald driver minor number */
 
 /* we can have up to this number of device plugged in at once */
 #define AUER_MAX_DEVICES 16
-#endif
 
 
 /* Number of read buffers for each device */
@@ -256,12 +249,6 @@ typedef struct
 	wait_queue_head_t 	bufferwait;         /* wait for a control buffer */
 } auerswald_t,*pauerswald_t;
 
-/* array of pointers to our devices that are currently connected */
-static pauerswald_t dev_table[AUER_MAX_DEVICES];
-
-/* lock to protect the dev_table structure */
-static struct semaphore dev_table_mutex;
-
 /* ................................................................... */
 /* character device context */
 typedef struct
@@ -1384,29 +1371,29 @@ static void auerswald_removeservice (pauerswald_t cp, pauerscon_t scp)
 /* Open a new character device */
 static int auerchar_open (struct inode *inode, struct file *file)
 {
-	int dtindex = minor(inode->i_rdev) - AUER_MINOR_BASE;
+	int dtindex = minor(inode->i_rdev);
 	pauerswald_t cp = NULL;
 	pauerchar_t ccp = NULL;
+	struct usb_interface *intf;
         int ret;
 
         /* minor number in range? */
-	if ((dtindex < 0) || (dtindex >= AUER_MAX_DEVICES)) {
+	if (dtindex < 0) {
 		return -ENODEV;
         }
-	/* usb device available? */
-	if (down_interruptible (&dev_table_mutex)) {
-		return -ERESTARTSYS;
+	intf = usb_find_interface(&auerswald_driver, dtindex);
+	if (!intf) {
+		return -ENODEV;
 	}
-	cp = dev_table[dtindex];
+
+	/* usb device available? */
+	cp = usb_get_intfdata (intf);
 	if (cp == NULL) {
-		up (&dev_table_mutex);
 		return -ENODEV;
 	}
 	if (down_interruptible (&cp->mutex)) {
-		up (&dev_table_mutex);
 		return -ERESTARTSYS;
 	}
-	up (&dev_table_mutex);
 
 	/* we have access to the device. Now lets allocate memory */
 	ccp = (pauerchar_t) kmalloc(sizeof(auerchar_t), GFP_KERNEL);
@@ -1895,6 +1882,13 @@ static struct file_operations auerswald_fops =
 	.release =	auerchar_release,
 };
 
+static struct usb_class_driver auerswald_class = {
+	.name =		"usb/auer%d",
+	.fops =		&auerswald_fops,
+	.mode =		S_IFCHR | S_IRUGO | S_IWUGO,
+	.minor_base =	AUER_MINOR_BASE,
+};
+
 
 /* --------------------------------------------------------------------- */
 /* Special USB driver functions                                          */
@@ -1923,7 +1917,6 @@ static int auerswald_probe (struct usb_interface *intf,
 	struct usb_device *usbdev = interface_to_usbdev(intf);
 	pauerswald_t cp = NULL;
 	DECLARE_WAIT_QUEUE_HEAD (wqh);
-	unsigned int dtindex;
 	unsigned int u = 0;
 	char *pbuf;
 	int ret;
@@ -1954,27 +1947,17 @@ static int auerswald_probe (struct usb_interface *intf,
         auerbuf_init (&cp->bufctl);
 	init_waitqueue_head (&cp->bufferwait);
 
-	down (&dev_table_mutex);
-	ret = usb_register_dev (&auerswald_fops, AUER_MINOR_BASE, 1, &dtindex);
+	ret = usb_register_dev(intf, &auerswald_class);
 	if (ret) {
 		err ("Not able to get a minor for this device.");
-		up (&dev_table_mutex);
 		goto pfail;
 	}
 
 	/* Give the device a name */
-	sprintf (cp->name, "usb/auer%d", dtindex);
+	sprintf (cp->name, "usb/auer%d", intf->minor);
 
 	/* Store the index */
-	cp->dtindex = dtindex;
-	dev_table[dtindex] = cp;
-	up (&dev_table_mutex);
-
-	/* initialize the devfs node for this device and register it */
-	devfs_register(NULL, cp->name, 0, USB_MAJOR,
-				    AUER_MINOR_BASE + dtindex,
-				    S_IFCHR | S_IRUGO | S_IWUGO,
-				    &auerswald_fops, NULL);
+	cp->dtindex = intf->minor;
 
 	/* Get the usb version of the device */
 	cp->version = cp->usbdev->descriptor.bcdDevice;
@@ -2083,18 +2066,8 @@ static void auerswald_disconnect (struct usb_interface *intf)
 	down (&cp->mutex);
 	info ("device /dev/%s now disconnecting", cp->name);
 
-	/* remove from device table */
-	/* Nobody can open() this device any more */
-	down (&dev_table_mutex);
-	dev_table[cp->dtindex] = NULL;
-	up (&dev_table_mutex);
-
-	/* remove our devfs node */
-	/* Nobody can see this device any more */
-	devfs_remove(cp->name);
-
 	/* give back our USB minor number */
-	usb_deregister_dev (1, cp->dtindex);
+	usb_deregister_dev(intf, &auerswald_class);
 
 	/* Stop the interrupt endpoint */
 	auerswald_int_release (cp);
@@ -2163,10 +2136,6 @@ static int __init auerswald_init (void)
 	int result;
 	dbg ("init");
 
-	/* initialize the device table */
-	memset (&dev_table, 0, sizeof(dev_table));
-	init_MUTEX (&dev_table_mutex);
-
 	/* register driver at the USB subsystem */
 	result = usb_register (&auerswald_driver);
 	if (result < 0) {