Input: USB devices - handle errors when registering input devices

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/usb/input/acecad.c

@@ -135,6 +135,7 @@ static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_
 	struct usb_acecad *acecad;
 	struct input_dev *input_dev;
 	int pipe, maxp;
+	int err = -ENOMEM;
 
 	if (interface->desc.bNumEndpoints != 1)
 		return -ENODEV;
@@ -149,16 +150,22 @@ static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_
 
 	acecad = kzalloc(sizeof(struct usb_acecad), GFP_KERNEL);
 	input_dev = input_allocate_device();
-	if (!acecad || !input_dev)
+	if (!acecad || !input_dev) {
+		err = -ENOMEM;
 		goto fail1;
+	}
 
 	acecad->data = usb_buffer_alloc(dev, 8, GFP_KERNEL, &acecad->data_dma);
-	if (!acecad->data)
+	if (!acecad->data) {
+		err= -ENOMEM;
 		goto fail1;
+	}
 
 	acecad->irq = usb_alloc_urb(0, GFP_KERNEL);
-	if (!acecad->irq)
+	if (!acecad->irq) {
+		err = -ENOMEM;
 		goto fail2;
+	}
 
 	acecad->usbdev = dev;
 	acecad->input = input_dev;
@@ -221,7 +228,9 @@ static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_
 	acecad->irq->transfer_dma = acecad->data_dma;
 	acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 
-	input_register_device(acecad->input);
+	err = input_register_device(acecad->input);
+	if (err)
+		goto fail2;
 
 	usb_set_intfdata(intf, acecad);
 
@@ -230,7 +239,7 @@ static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_
  fail2:	usb_buffer_free(dev, 8, acecad->data, acecad->data_dma);
  fail1: input_free_device(input_dev);
 	kfree(acecad);
-	return -ENOMEM;
+	return err;
 }
 
 static void usb_acecad_disconnect(struct usb_interface *intf)

drivers/usb/input/aiptek.c

@@ -1972,6 +1972,7 @@ aiptek_probe(struct usb_interface *intf, const struct usb_device_id *id)
 		AIPTEK_PROGRAMMABLE_DELAY_200,
 		AIPTEK_PROGRAMMABLE_DELAY_300
 	};
+	int err = -ENOMEM;
 
 	/* programmableDelay is where the command-line specified
 	 * delay is kept. We make it the first element of speeds[],
@@ -2133,7 +2134,9 @@ aiptek_probe(struct usb_interface *intf, const struct usb_device_id *id)
 
 	/* Register the tablet as an Input Device
 	 */
-	input_register_device(aiptek->inputdev);
+	err = input_register_device(aiptek->inputdev);
+	if (err)
+		goto fail2;
 
 	/* We now will look for the evdev device which is mapped to
 	 * the tablet. The partial name is kept in the link list of
@@ -2165,23 +2168,13 @@ aiptek_probe(struct usb_interface *intf, const struct usb_device_id *id)
 
 	return 0;
 
-fail2:	usb_buffer_free(usbdev, AIPTEK_PACKET_LENGTH, aiptek->data,
+ fail2:	usb_buffer_free(usbdev, AIPTEK_PACKET_LENGTH, aiptek->data,
 			aiptek->data_dma);
-fail1:	input_free_device(inputdev);
+ fail1:	input_free_device(inputdev);
 	kfree(aiptek);
-	return -ENOMEM;
+	return err;
 }
 
-/* Forward declaration */
-static void aiptek_disconnect(struct usb_interface *intf);
-
-static struct usb_driver aiptek_driver = {
-	.name = "aiptek",
-	.probe = aiptek_probe,
-	.disconnect = aiptek_disconnect,
-	.id_table = aiptek_ids,
-};
-
 /***********************************************************************
  * Deal with tablet disconnecting from the system.
  */
@@ -2206,6 +2199,13 @@ static void aiptek_disconnect(struct usb_interface *intf)
 	}
 }
 
+static struct usb_driver aiptek_driver = {
+	.name = "aiptek",
+	.probe = aiptek_probe,
+	.disconnect = aiptek_disconnect,
+	.id_table = aiptek_ids,
+};
+
 static int __init aiptek_init(void)
 {
 	int result = usb_register(&aiptek_driver);

drivers/usb/input/appletouch.c

@@ -491,8 +491,7 @@ static int atp_probe(struct usb_interface *iface, const struct usb_device_id *id
 	struct usb_host_interface *iface_desc;
 	struct usb_endpoint_descriptor *endpoint;
 	int int_in_endpointAddr = 0;
-	int i, retval = -ENOMEM;
-
+	int i, error = -ENOMEM;
 
 	/* set up the endpoint information */
 	/* use only the first interrupt-in endpoint */
@@ -567,17 +566,13 @@ static int atp_probe(struct usb_interface *iface, const struct usb_device_id *id
 	}
 
 	dev->urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!dev->urb) {
-		retval = -ENOMEM;
+	if (!dev->urb)
 		goto err_free_devs;
-	}
 
 	dev->data = usb_buffer_alloc(dev->udev, dev->datalen, GFP_KERNEL,
 				     &dev->urb->transfer_dma);
-	if (!dev->data) {
-		retval = -ENOMEM;
+	if (!dev->data)
 		goto err_free_urb;
-	}
 
 	usb_fill_int_urb(dev->urb, udev,
 			 usb_rcvintpipe(udev, int_in_endpointAddr),
@@ -633,20 +628,25 @@ static int atp_probe(struct usb_interface *iface, const struct usb_device_id *id
 	set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit);
 	set_bit(BTN_LEFT, input_dev->keybit);
 
-	input_register_device(dev->input);
+	error = input_register_device(dev->input);
+	if (error)
+		goto err_free_buffer;
 
 	/* save our data pointer in this interface device */
 	usb_set_intfdata(iface, dev);
 
 	return 0;
 
+ err_free_buffer:
+	usb_buffer_free(dev->udev, dev->datalen,
+			dev->data, dev->urb->transfer_dma);
  err_free_urb:
 	usb_free_urb(dev->urb);
  err_free_devs:
 	usb_set_intfdata(iface, NULL);
 	kfree(dev);
 	input_free_device(input_dev);
-	return retval;
+	return error;
 }
 
 static void atp_disconnect(struct usb_interface *iface)

drivers/usb/input/ati_remote.c

@@ -772,15 +772,17 @@ static int ati_remote_probe(struct usb_interface *interface, const struct usb_de
 		goto fail3;
 
 	/* Set up and register input device */
-	input_register_device(ati_remote->idev);
+	err = input_register_device(ati_remote->idev);
+	if (err)
+		goto fail3;
 
 	usb_set_intfdata(interface, ati_remote);
 	return 0;
 
-fail3:	usb_kill_urb(ati_remote->irq_urb);
+ fail3:	usb_kill_urb(ati_remote->irq_urb);
 	usb_kill_urb(ati_remote->out_urb);
-fail2:	ati_remote_free_buffers(ati_remote);
-fail1:	input_free_device(input_dev);
+ fail2:	ati_remote_free_buffers(ati_remote);
+ fail1:	input_free_device(input_dev);
 	kfree(ati_remote);
 	return err;
 }

drivers/usb/input/ati_remote2.c

@@ -337,7 +337,7 @@ static void ati_remote2_complete_key(struct urb *urb)
 static int ati_remote2_input_init(struct ati_remote2 *ar2)
 {
 	struct input_dev *idev;
-	int i;
+	int i, retval;
 
 	idev = input_allocate_device();
 	if (!idev)
@@ -364,11 +364,11 @@ static int ati_remote2_input_init(struct ati_remote2 *ar2)
 	usb_to_input_id(ar2->udev, &idev->id);
 	idev->cdev.dev = &ar2->udev->dev;
 
-	i = input_register_device(idev);
-	if (i)
+	retval = input_register_device(idev);
+	if (retval)
 		input_free_device(idev);
 
-	return i;
+	return retval;
 }
 
 static int ati_remote2_urb_init(struct ati_remote2 *ar2)

drivers/usb/input/kbtab.c

@@ -122,6 +122,7 @@ static int kbtab_probe(struct usb_interface *intf, const struct usb_device_id *i
 	struct usb_endpoint_descriptor *endpoint;
 	struct kbtab *kbtab;
 	struct input_dev *input_dev;
+	int error = -ENOMEM;
 
 	kbtab = kzalloc(sizeof(struct kbtab), GFP_KERNEL);
 	input_dev = input_allocate_device();
@@ -168,15 +169,19 @@ static int kbtab_probe(struct usb_interface *intf, const struct usb_device_id *i
 	kbtab->irq->transfer_dma = kbtab->data_dma;
 	kbtab->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 
-	input_register_device(kbtab->dev);
+	error = input_register_device(kbtab->dev);
+	if (error)
+		goto fail3;
 
 	usb_set_intfdata(intf, kbtab);
+
 	return 0;
 
-fail2:	usb_buffer_free(dev, 10, kbtab->data, kbtab->data_dma);
-fail1:	input_free_device(input_dev);
+ fail3:	usb_free_urb(kbtab->irq);
+ fail2:	usb_buffer_free(dev, 10, kbtab->data, kbtab->data_dma);
+ fail1:	input_free_device(input_dev);
 	kfree(kbtab);
-	return -ENOMEM;
+	return error;
 }
 
 static void kbtab_disconnect(struct usb_interface *intf)

drivers/usb/input/keyspan_remote.c

@@ -437,7 +437,7 @@ static int keyspan_probe(struct usb_interface *interface, const struct usb_devic
 	struct usb_endpoint_descriptor *endpoint;
 	struct usb_keyspan *remote;
 	struct input_dev *input_dev;
-	int i, retval;
+	int i, error;
 
 	endpoint = keyspan_get_in_endpoint(interface->cur_altsetting);
 	if (!endpoint)
@@ -446,7 +446,7 @@ static int keyspan_probe(struct usb_interface *interface, const struct usb_devic
 	remote = kzalloc(sizeof(*remote), GFP_KERNEL);
 	input_dev = input_allocate_device();
 	if (!remote || !input_dev) {
-		retval = -ENOMEM;
+		error = -ENOMEM;
 		goto fail1;
 	}
 
@@ -458,19 +458,19 @@ static int keyspan_probe(struct usb_interface *interface, const struct usb_devic
 
 	remote->in_buffer = usb_buffer_alloc(udev, RECV_SIZE, GFP_ATOMIC, &remote->in_dma);
 	if (!remote->in_buffer) {
-		retval = -ENOMEM;
+		error = -ENOMEM;
 		goto fail1;
 	}
 
 	remote->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
 	if (!remote->irq_urb) {
-		retval = -ENOMEM;
+		error = -ENOMEM;
 		goto fail2;
 	}
 
-	retval = keyspan_setup(udev);
-	if (retval) {
-		retval = -ENODEV;
+	error = keyspan_setup(udev);
+	if (error) {
+		error = -ENODEV;
 		goto fail3;
 	}
 
@@ -517,7 +517,9 @@ static int keyspan_probe(struct usb_interface *interface, const struct usb_devic
 	remote->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 
 	/* we can register the device now, as it is ready */
-	input_register_device(remote->input);
+	error = input_register_device(remote->input);
+	if (error)
+		goto fail3;
 
 	/* save our data pointer in this interface device */
 	usb_set_intfdata(interface, remote);
@@ -529,7 +531,7 @@ static int keyspan_probe(struct usb_interface *interface, const struct usb_devic
  fail1:	kfree(remote);
 	input_free_device(input_dev);
 
-	return retval;
+	return error;
 }
 
 /*

drivers/usb/input/powermate.c

@@ -308,7 +308,7 @@ static int powermate_probe(struct usb_interface *intf, const struct usb_device_i
 	struct powermate_device *pm;
 	struct input_dev *input_dev;
 	int pipe, maxp;
-	int err = -ENOMEM;
+	int error = -ENOMEM;
 
 	interface = intf->cur_altsetting;
 	endpoint = &interface->endpoint[0].desc;
@@ -387,11 +387,14 @@ static int powermate_probe(struct usb_interface *intf, const struct usb_device_i
 
 	/* register our interrupt URB with the USB system */
 	if (usb_submit_urb(pm->irq, GFP_KERNEL)) {
-		err = -EIO;
+		error = -EIO;
 		goto fail4;
 	}
 
-	input_register_device(pm->input);
+	error = input_register_device(pm->input);
+	if (error)
+		goto fail5;
+
 
 	/* force an update of everything */
 	pm->requires_update = UPDATE_PULSE_ASLEEP | UPDATE_PULSE_AWAKE | UPDATE_PULSE_MODE | UPDATE_STATIC_BRIGHTNESS;
@@ -400,12 +403,13 @@ static int powermate_probe(struct usb_interface *intf, const struct usb_device_i
 	usb_set_intfdata(intf, pm);
 	return 0;
 
-fail4:	usb_free_urb(pm->config);
-fail3:	usb_free_urb(pm->irq);
-fail2:	powermate_free_buffers(udev, pm);
-fail1:	input_free_device(input_dev);
+ fail5:	usb_kill_urb(pm->irq);
+ fail4:	usb_free_urb(pm->config);
+ fail3:	usb_free_urb(pm->irq);
+ fail2:	powermate_free_buffers(udev, pm);
+ fail1:	input_free_device(input_dev);
 	kfree(pm);
-	return err;
+	return error;
 }
 
 /* Called when a USB device we've accepted ownership of is removed */

drivers/usb/input/wacom_sys.c

@@ -201,6 +201,7 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i
 	struct wacom *wacom;
 	struct wacom_wac *wacom_wac;
 	struct input_dev *input_dev;
+	int error = -ENOMEM;
 	char rep_data[2], limit = 0;
 
 	wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
@@ -252,7 +253,9 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i
 	wacom->irq->transfer_dma = wacom->data_dma;
 	wacom->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 
-	input_register_device(wacom->dev);
+	error = input_register_device(wacom->dev);
+	if (error)
+		goto fail3;
 
 	/* Ask the tablet to report tablet data. Repeat until it succeeds */
 	do {
@@ -265,11 +268,12 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i
 	usb_set_intfdata(intf, wacom);
 	return 0;
 
-fail2:	usb_buffer_free(dev, 10, wacom_wac->data, wacom->data_dma);
-fail1:	input_free_device(input_dev);
+ fail3:	usb_free_urb(wacom->irq);
+ fail2:	usb_buffer_free(dev, 10, wacom_wac->data, wacom->data_dma);
+ fail1:	input_free_device(input_dev);
 	kfree(wacom);
 	kfree(wacom_wac);
-	return -ENOMEM;
+	return error;
 }
 
 static void wacom_disconnect(struct usb_interface *intf)