[media] dvb_usb_v2: pass (struct dvb_usb_device *) as a parameter for fw download

Change parameter (struct usb_device *) => (struct dvb_usb_device *)
for .identify_state() and .download_firmware() callbacks.

struct usb_device * did not provide handle for the DVB USB driver state.
Change DVB USB framework to alloc space	for the	priv earlier and pass
that pointer to the device driver using (struct dvb_usb_device *)
as a callback parameter.
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

@@ -275,9 +275,10 @@ struct dvb_usb_device_properties {
 #define CYPRESS_AN2235  2
 #define CYPRESS_FX2     3
 	int        usb_ctrl;
-	int        (*download_firmware) (struct usb_device *, const struct firmware *);
+
+#define RECONNECTS_USB                  1
+	int        (*download_firmware) (struct dvb_usb_device *, const struct firmware *);
 	const char *firmware;
-	int        no_reconnect;
 
 	int size_of_priv;
 
@@ -286,8 +287,10 @@ struct dvb_usb_device_properties {
 
 	int (*power_ctrl)       (struct dvb_usb_device *, int);
 	int (*read_mac_address) (struct dvb_usb_device *, u8 []);
-	int (*identify_state)   (struct usb_device *, struct dvb_usb_device_properties *,
-			struct dvb_usb_device_description **, int *);
+
+#define WARM                  0
+#define COLD                  1
+	int (*identify_state) (struct dvb_usb_device *);
 	int (*init) (struct dvb_usb_device *);
 
 	struct {

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

@@ -25,7 +25,7 @@ extern int dvb_usb_disable_rc_polling;
 #define deb_uxfer(args...) dprintk(dvb_usb_debug,0x100,args)
 
 /* commonly used  methods */
-extern int dvb_usb_download_firmware(struct usb_device *, struct dvb_usb_device_properties *);
+extern int dvb_usb_download_firmware(struct dvb_usb_device *);
 
 extern int dvb_usb_device_power_ctrl(struct dvb_usb_device *d, int onoff);
 

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

@@ -75,29 +75,29 @@ int usbv2_cypress_load_firmware(struct usb_device *udev, const struct firmware *
 }
 EXPORT_SYMBOL(usbv2_cypress_load_firmware);
 
-int dvb_usb_download_firmware(struct usb_device *udev, struct dvb_usb_device_properties *props)
+int dvb_usb_download_firmware(struct dvb_usb_device *d)
 {
 	int ret;
 	const struct firmware *fw = NULL;
 
-	if ((ret = request_firmware(&fw, props->firmware, &udev->dev)) != 0) {
+	if ((ret = request_firmware(&fw, d->props.firmware, &d->udev->dev)) != 0) {
 		err("did not find the firmware file. (%s) "
 			"Please see linux/Documentation/dvb/ for more details on firmware-problems. (%d)",
-			props->firmware,ret);
+			d->props.firmware,ret);
 		return ret;
 	}
 
-	info("downloading firmware from file '%s'",props->firmware);
+	info("downloading firmware from file '%s'", d->props.firmware);
 
-	switch (props->usb_ctrl) {
+	switch (d->props.usb_ctrl) {
 		case CYPRESS_AN2135:
 		case CYPRESS_AN2235:
 		case CYPRESS_FX2:
-			ret = usbv2_cypress_load_firmware(udev, fw, props->usb_ctrl);
+			ret = usbv2_cypress_load_firmware(d->udev, fw, d->props.usb_ctrl);
 			break;
 		case DEVICE_SPECIFIC:
-			if (props->download_firmware)
-				ret = props->download_firmware(udev,fw);
+			if (d->props.download_firmware)
+				ret = d->props.download_firmware(d, fw);
 			else {
 				err("BUG: driver didn't specified a download_firmware-callback, although it claims to have a DEVICE_SPECIFIC one.");
 				ret = -EINVAL;

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

@@ -147,14 +147,6 @@ static int dvb_usb_init(struct dvb_usb_device *d)
 
 	d->state = DVB_USB_STATE_INIT;
 
-	if (d->props.size_of_priv > 0) {
-		d->priv = kzalloc(d->props.size_of_priv, GFP_KERNEL);
-		if (d->priv == NULL) {
-			err("no memory for priv in 'struct dvb_usb_device'");
-			return -ENOMEM;
-		}
-	}
-
 	/* check the capabilities and set appropriate variables */
 	dvb_usb_device_power_ctrl(d, 1);
 
@@ -175,12 +167,12 @@ static int dvb_usb_init(struct dvb_usb_device *d)
 }
 
 /* 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, int *cold)
+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 = -1;
+	*cold = true;
 
 	for (i = 0; i < props->num_device_descs; i++) {
 
@@ -188,7 +180,7 @@ static struct dvb_usb_device_description *dvb_usb_find_device(struct usb_device
 			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 = 1;
+				*cold = true;
 				desc = &props->devices[i];
 				break;
 			}
@@ -201,16 +193,13 @@ static struct dvb_usb_device_description *dvb_usb_find_device(struct usb_device
 			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 = 0;
+				*cold = false;
 				desc = &props->devices[i];
 				break;
 			}
 		}
 	}
 
-	if (desc != NULL && props->identify_state != NULL)
-		props->identify_state(udev, props, &desc, cold);
-
 	return desc;
 }
 
@@ -240,31 +229,61 @@ int dvb_usbv2_device_init(struct usb_interface *intf,
 	struct dvb_usb_device_description *desc = NULL;
 	struct dvb_usb_device_properties *props =
 			(struct dvb_usb_device_properties *) id->driver_info;
+	int ret = -ENOMEM;
+	bool cold;
 
-	int ret = -ENOMEM, cold = 0;
+	d = kzalloc(sizeof(struct dvb_usb_device), GFP_KERNEL);
+	if (d == NULL) {
+		err("no memory for 'struct dvb_usb_device'");
+		return -ENOMEM;
+	}
+
+	d->udev = udev;
+	memcpy(&d->props, props, sizeof(struct dvb_usb_device_properties));
+
+	if (d->props.size_of_priv > 0) {
+		d->priv = kzalloc(d->props.size_of_priv, GFP_KERNEL);
+		if (d->priv == NULL) {
+			err("no memory for priv in 'struct dvb_usb_device'");
+			ret = -ENOMEM;
+			goto err_kfree;
+		}
+	}
 
 	if ((desc = dvb_usb_find_device(udev, props, &cold)) == NULL) {
 		deb_err("something went very wrong, device was not found in current device list - let's see what comes next.\n");
-		return -ENODEV;
+		ret = -ENODEV;
+		goto err_kfree;
+	}
+
+	d->desc = desc;
+
+	if (d->props.identify_state) {
+		ret = d->props.identify_state(d);
+		if (ret == 0) {
+			;
+		} else if (ret == COLD) {
+			cold = true;
+			ret = 0;
+		} else {
+			goto err_kfree;
+		}
 	}
 
 	if (cold) {
 		info("found a '%s' in cold state, will try to load a firmware", desc->name);
-		ret = dvb_usb_download_firmware(udev, props);
-		if (!props->no_reconnect || ret != 0)
-			return ret;
+		ret = dvb_usb_download_firmware(d);
+		if (ret == 0) {
+			;
+		} else if (ret == RECONNECTS_USB) {
+			ret = 0;
+			goto err_kfree;
+		} else {
+			goto err_kfree;
 		}
-
-	info("found a '%s' in warm state.", desc->name);
-	d = kzalloc(sizeof(struct dvb_usb_device), GFP_KERNEL);
-	if (d == NULL) {
-		err("no memory for 'struct dvb_usb_device'");
-		return -ENOMEM;
 	}
 
-	d->udev = udev;
-	memcpy(&d->props, props, sizeof(struct dvb_usb_device_properties));
-	d->desc = desc;
+	info("found a '%s' in warm state.", desc->name);
 
 	usb_set_intfdata(intf, d);
 
@@ -274,6 +293,13 @@ int dvb_usbv2_device_init(struct usb_interface *intf,
 		info("%s successfully initialized and connected.", desc->name);
 	else
 		info("%s error while loading driver (%d)", desc->name, ret);
+
+	return 0;
+
+err_kfree:
+	kfree(d->priv);
+	kfree(d);
+
 	return ret;
 }
 EXPORT_SYMBOL(dvb_usbv2_device_init);