Input: drivers/usb/input - usb_buffer_free() cleanup

usb_buffer_free() now handles NULLs so remove unneeded checks
form callers.

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

drivers/usb/input/ati_remote2.c

@@ -405,9 +405,7 @@ static void ati_remote2_urb_cleanup(struct ati_remote2 *ar2)
 
 	for (i = 0; i < 2; i++) {
 		usb_free_urb(ar2->urb[i]);
-
-		if (ar2->buf[i])
-			usb_buffer_free(ar2->udev, 4, ar2->buf[i], ar2->buf_dma[i]);
+		usb_buffer_free(ar2->udev, 4, ar2->buf[i], ar2->buf_dma[i]);
 	}
 }
 

drivers/usb/input/powermate.c

@@ -291,12 +291,10 @@ static int powermate_alloc_buffers(struct usb_device *udev, struct powermate_dev
 
 static void powermate_free_buffers(struct usb_device *udev, struct powermate_device *pm)
 {
-	if (pm->data)
-		usb_buffer_free(udev, POWERMATE_PAYLOAD_SIZE_MAX,
-				pm->data, pm->data_dma);
-	if (pm->configcr)
-		usb_buffer_free(udev, sizeof(*(pm->configcr)),
-				pm->configcr, pm->configcr_dma);
+	usb_buffer_free(udev, POWERMATE_PAYLOAD_SIZE_MAX,
+			pm->data, pm->data_dma);
+	usb_buffer_free(udev, sizeof(*(pm->configcr)),
+			pm->configcr, pm->configcr_dma);
 }
 
 /* Called whenever a USB device matching one in our supported devices table is connected */

drivers/usb/input/usbtouchscreen.c

@@ -668,9 +668,8 @@ static void usbtouch_close(struct input_dev *input)
 static void usbtouch_free_buffers(struct usb_device *udev,
 				  struct usbtouch_usb *usbtouch)
 {
-	if (usbtouch->data)
-		usb_buffer_free(udev, usbtouch->type->rept_size,
-		                usbtouch->data, usbtouch->data_dma);
+	usb_buffer_free(udev, usbtouch->type->rept_size,
+	                usbtouch->data, usbtouch->data_dma);
 	kfree(usbtouch->buffer);
 }
 

drivers/usb/input/yealink.c

@@ -818,18 +818,17 @@ static int usb_cleanup(struct yealink_dev *yld, int err)
 		else
 			input_unregister_device(yld->idev);
 	}
-	if (yld->ctl_req)
-		usb_buffer_free(yld->udev, sizeof(*(yld->ctl_req)),
-				yld->ctl_req, yld->ctl_req_dma);
-	if (yld->ctl_data)
-		usb_buffer_free(yld->udev, USB_PKT_LEN,
-				yld->ctl_data, yld->ctl_dma);
-	if (yld->irq_data)
-		usb_buffer_free(yld->udev, USB_PKT_LEN,
-				yld->irq_data, yld->irq_dma);
-
-	usb_free_urb(yld->urb_irq);	/* parameter validation in core/urb */
-	usb_free_urb(yld->urb_ctl);	/* parameter validation in core/urb */
+
+	usb_free_urb(yld->urb_irq);
+	usb_free_urb(yld->urb_ctl);
+
+	usb_buffer_free(yld->udev, sizeof(*(yld->ctl_req)),
+			yld->ctl_req, yld->ctl_req_dma);
+	usb_buffer_free(yld->udev, USB_PKT_LEN,
+			yld->ctl_data, yld->ctl_dma);
+	usb_buffer_free(yld->udev, USB_PKT_LEN,
+			yld->irq_data, yld->irq_dma);
+
 	kfree(yld);
 	return err;
 }