[media] dvb_usb_v2: pass device name too using (struct usb_device_id)

Pass all the needed data to the DVB USB core using
(struct usb_device_id) .driver_info. That simplifies
old code a lot and saves memory	as all device IDs and
names are not defined inside (struct dvb_usb_device_properties)
as earlier.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/dvb-usb/dvb_usb.h

@@ -60,23 +60,9 @@
 #define warn(format, arg...) \
 	printk(KERN_WARNING DVB_USB_LOG_PREFIX ": " format "\n" , ## arg)
 
-/**
- * struct dvb_usb_device_description - name and its according USB IDs
- * @name: real name of the box, regardless which DVB USB device class is in use
- * @cold_ids: array of struct usb_device_id which describe the device in
- *  pre-firmware state
- * @warm_ids: array of struct usb_device_id which describe the device in
- *  post-firmware state
- *
- * Each DVB USB device class can have one or more actual devices, this struct
- * assigns a name to it.
- */
-struct dvb_usb_device_description {
+struct dvb_usb_driver_info {
 	const char *name;
-
-#define DVB_USB_ID_MAX_NUM 15
-	struct usb_device_id *cold_ids[DVB_USB_ID_MAX_NUM];
-	struct usb_device_id *warm_ids[DVB_USB_ID_MAX_NUM];
+	const struct dvb_usb_device_properties *props;
 };
 
 static inline u8 rc5_custom(struct rc_map_table *key)
@@ -262,10 +248,6 @@ enum dvb_usb_mode {
  *  the generic_bulk_ctrl_endpoint. When this is non-zero, this will be used
  *  instead of the generic_bulk_ctrl_endpoint when reading usb responses in
  *  the dvb_usb_generic_rw helper function.
- *
- * @num_device_descs: number of struct dvb_usb_device_description in @devices
- * @devices: array of struct dvb_usb_device_description compatibles with these
- *  properties.
  */
 #define MAX_NO_OF_ADAPTER_PER_DEVICE 2
 struct dvb_usb_device_properties {
@@ -309,9 +291,6 @@ struct dvb_usb_device_properties {
 
 	int generic_bulk_ctrl_endpoint;
 	int generic_bulk_ctrl_endpoint_response;
-
-	int num_device_descs;
-	struct dvb_usb_device_description devices[12];
 };
 
 /**
@@ -437,7 +416,7 @@ struct dvb_usb_adapter {
  */
 struct dvb_usb_device {
 	struct dvb_usb_device_properties props;
-	struct dvb_usb_device_description *desc;
+	const char *name;
 
 	struct usb_device *udev;
 

drivers/media/dvb/dvb-usb/dvb_usb_dvb.c

@@ -103,7 +103,7 @@ static int dvb_usb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
 int dvb_usb_adapter_dvb_init(struct dvb_usb_adapter *adap)
 {
 	int i;
-	int ret = dvb_register_adapter(&adap->dvb_adap, adap->dev->desc->name,
+	int ret = dvb_register_adapter(&adap->dvb_adap, adap->dev->name,
 				       adap->dev->props.owner,
 				       &adap->dev->udev->dev,
 				       adap->dev->props.adapter_nr);
@@ -236,7 +236,7 @@ int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap)
 		if (adap->props.fe[i].frontend_attach == NULL) {
 			err("strange: '%s' #%d,%d " \
 			    "doesn't want to attach a frontend.",
-			    adap->dev->desc->name, adap->id, i);
+			    adap->dev->name, adap->id, i);
 
 			return 0;
 		}
@@ -246,7 +246,7 @@ int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap)
 			/* only print error when there is no FE at all */
 			if (i == 0)
 				err("no frontend was attached by '%s'",
-					adap->dev->desc->name);
+					adap->dev->name);
 
 			return 0;
 		}

drivers/media/dvb/dvb-usb/dvb_usb_i2c.c

@@ -19,7 +19,7 @@ int dvb_usb_i2c_init(struct dvb_usb_device *d)
 		return -EINVAL;
 	}
 
-	strlcpy(d->i2c_adap.name, d->desc->name, sizeof(d->i2c_adap.name));
+	strlcpy(d->i2c_adap.name, d->name, sizeof(d->i2c_adap.name));
 	d->i2c_adap.algo      = d->props.i2c_algo;
 	d->i2c_adap.algo_data = NULL;
 	d->i2c_adap.dev.parent = &d->udev->dev;

drivers/media/dvb/dvb-usb/dvb_usb_init.c

@@ -198,49 +198,6 @@ static int dvb_usb_init(struct dvb_usb_device *d)
 	return 0;
 }
 
-/* determine the name and the state of the just found USB device */
-static struct dvb_usb_device_description *dvb_usb_find_device(
-		struct usb_device *udev,
-		struct dvb_usb_device_properties *props, bool *cold)
-{
-	int i, j;
-	struct dvb_usb_device_description *desc = NULL;
-
-	*cold = true;
-
-	for (i = 0; i < props->num_device_descs; i++) {
-		for (j = 0; j < DVB_USB_ID_MAX_NUM && props->devices[i].cold_ids[j] != NULL; j++) {
-			deb_info("check for cold %x %x\n",
-				props->devices[i].cold_ids[j]->idVendor,
-				props->devices[i].cold_ids[j]->idProduct);
-			if (props->devices[i].cold_ids[j]->idVendor == le16_to_cpu(udev->descriptor.idVendor) &&
-					props->devices[i].cold_ids[j]->idProduct == le16_to_cpu(udev->descriptor.idProduct)) {
-				*cold = true;
-				desc = &props->devices[i];
-				break;
-			}
-		}
-
-		if (desc != NULL)
-			break;
-
-		for (j = 0; j < DVB_USB_ID_MAX_NUM && props->devices[i].warm_ids[j] != NULL; j++) {
-			deb_info("check for warm %x %x\n",
-				props->devices[i].warm_ids[j]->idVendor,
-				props->devices[i].warm_ids[j]->idProduct);
-
-			if (props->devices[i].warm_ids[j]->idVendor == le16_to_cpu(udev->descriptor.idVendor) &&
-					props->devices[i].warm_ids[j]->idProduct == le16_to_cpu(udev->descriptor.idProduct)) {
-				*cold = false;
-				desc = &props->devices[i];
-				break;
-			}
-		}
-	}
-
-	return desc;
-}
-
 int dvb_usb_device_power_ctrl(struct dvb_usb_device *d, int onoff)
 {
 	if (onoff)
@@ -265,11 +222,11 @@ int dvb_usbv2_device_init(struct usb_interface *intf,
 {
 	struct usb_device *udev = interface_to_usbdev(intf);
 	struct dvb_usb_device *d = NULL;
-	struct dvb_usb_device_description *desc = NULL;
-	struct dvb_usb_device_properties *props =
-			(struct dvb_usb_device_properties *) id->driver_info;
+	struct dvb_usb_driver_info *driver_info =
+			(struct dvb_usb_driver_info *) id->driver_info;
+	const struct dvb_usb_device_properties *props = driver_info->props;
 	int ret = -ENOMEM;
-	bool cold;
+	bool cold = false;
 
 	d = kzalloc(sizeof(struct dvb_usb_device), GFP_KERNEL);
 	if (d == NULL) {
@@ -278,6 +235,7 @@ int dvb_usbv2_device_init(struct usb_interface *intf,
 	}
 
 	d->udev = udev;
+	d->name = driver_info->name;
 	memcpy(&d->props, props, sizeof(struct dvb_usb_device_properties));
 
 	if (d->props.size_of_priv > 0) {
@@ -289,18 +247,6 @@ int dvb_usbv2_device_init(struct usb_interface *intf,
 		}
 	}
 
-	desc = dvb_usb_find_device(udev, props, &cold);
-
-	if (desc == NULL) {
-		deb_err("something went very wrong, device was not found in" \
-				" current device list - let's see what" \
-				" comes next.\n");
-		ret = -ENODEV;
-		goto err_kfree;
-	}
-
-	d->desc = desc;
-
 	if (d->props.identify_state) {
 		ret = d->props.identify_state(d);
 		if (ret == 0) {
@@ -315,7 +261,7 @@ int dvb_usbv2_device_init(struct usb_interface *intf,
 
 	if (cold) {
 		info("found a '%s' in cold state, will try to load a firmware",
-				desc->name);
+				d->name);
 		ret = dvb_usb_download_firmware(d);
 		if (ret == 0) {
 			;
@@ -327,16 +273,16 @@ int dvb_usbv2_device_init(struct usb_interface *intf,
 		}
 	}
 
-	info("found a '%s' in warm state.", desc->name);
+	info("found a '%s' in warm state.", d->name);
 
 	usb_set_intfdata(intf, d);
 
 	ret = dvb_usb_init(d);
 
 	if (ret == 0)
-		info("%s successfully initialized and connected.", desc->name);
+		info("%s successfully initialized and connected.", d->name);
 	else
-		info("%s error while loading driver (%d)", desc->name, ret);
+		info("%s error while loading driver (%d)", d->name, ret);
 
 	return 0;
 
@@ -351,15 +297,14 @@ EXPORT_SYMBOL(dvb_usbv2_device_init);
 void dvb_usbv2_device_exit(struct usb_interface *intf)
 {
 	struct dvb_usb_device *d = usb_get_intfdata(intf);
-	const char *name = "generic DVB-USB module";
+	const char *name;
 
 	usb_set_intfdata(intf, NULL);
-	if (d != NULL && d->desc != NULL) {
-		name = d->desc->name;
+	if (d) {
+		name = d->name;
 		dvb_usb_exit(d);
 	}
 	info("%s successfully deinitialized and disconnected.", name);
-
 }
 EXPORT_SYMBOL(dvb_usbv2_device_exit);