[PATCH] usb: remove unneeded break

[PATCH] usb: remove unneeded break

[trix]

From: Tom Rix <trix@redhat.com>

A break is not needed if it is preceded by a return or goto

Signed-off-by: Tom Rix <trix@redhat.com>
---
 drivers/usb/gadget/function/f_hid.c | 9 ---------
 drivers/usb/host/xhci-mem.c         | 1 -
 drivers/usb/misc/iowarrior.c        | 3 ---
 drivers/usb/serial/iuu_phoenix.c    | 2 --
 drivers/usb/storage/freecom.c       | 1 -
 5 files changed, 16 deletions(-)

diff --git a/drivers/usb/gadget/function/f_hid.c b/drivers/usb/gadget/function/f_hid.c
index 1125f4715830..5204769834d1 100644
--- a/drivers/usb/gadget/function/f_hid.c
+++ b/drivers/usb/gadget/function/f_hid.c
@@ -511,9 +511,7 @@ static int hidg_setup(struct usb_function *f,
 		/* send an empty report */
 		length = min_t(unsigned, length, hidg->report_length);
 		memset(req->buf, 0x0, length);
-
 		goto respond;
-		break;
 
 	case ((USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8
 		  | HID_REQ_GET_PROTOCOL):
@@ -521,13 +519,11 @@ static int hidg_setup(struct usb_function *f,
 		length = min_t(unsigned int, length, 1);
 		((u8 *) req->buf)[0] = hidg->protocol;
 		goto respond;
-		break;
 
 	case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8
 		  | HID_REQ_SET_REPORT):
 		VDBG(cdev, "set_report | wLength=%d\n", ctrl->wLength);
 		goto stall;
-		break;
 
 	case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8
 		  | HID_REQ_SET_PROTOCOL):
@@ -544,7 +540,6 @@ static int hidg_setup(struct usb_function *f,
 			goto respond;
 		}
 		goto stall;
-		break;
 
 	case ((USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_INTERFACE) << 8
 		  | USB_REQ_GET_DESCRIPTOR):
@@ -562,7 +557,6 @@ static int hidg_setup(struct usb_function *f,
 						   hidg_desc_copy.bLength);
 			memcpy(req->buf, &hidg_desc_copy, length);
 			goto respond;
-			break;
 		}
 		case HID_DT_REPORT:
 			VDBG(cdev, "USB_REQ_GET_DESCRIPTOR: REPORT\n");
@@ -570,13 +564,11 @@ static int hidg_setup(struct usb_function *f,
 						   hidg->report_desc_length);
 			memcpy(req->buf, hidg->report_desc, length);
 			goto respond;
-			break;
 
 		default:
 			VDBG(cdev, "Unknown descriptor request 0x%x\n",
 				 value >> 8);
 			goto stall;
-			break;
 		}
 		break;
 
@@ -584,7 +576,6 @@ static int hidg_setup(struct usb_function *f,
 		VDBG(cdev, "Unknown request 0x%x\n",
 			 ctrl->bRequest);
 		goto stall;
-		break;
 	}
 
 stall:
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index fe405cd38dbc..b46ef45c4d25 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -1144,7 +1144,6 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud
 	case USB_SPEED_WIRELESS:
 		xhci_dbg(xhci, "FIXME xHCI doesn't support wireless speeds\n");
 		return -EINVAL;
-		break;
 	default:
 		/* Speed was set earlier, this shouldn't happen. */
 		return -EINVAL;
diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c
index 70ec29681526..efbd317f2f25 100644
--- a/drivers/usb/misc/iowarrior.c
+++ b/drivers/usb/misc/iowarrior.c
@@ -384,7 +384,6 @@ static ssize_t iowarrior_write(struct file *file,
 		retval = usb_set_report(dev->interface, 2, 0, buf, count);
 		kfree(buf);
 		goto exit;
-		break;
 	case USB_DEVICE_ID_CODEMERCS_IOW56:
 	case USB_DEVICE_ID_CODEMERCS_IOW56AM:
 	case USB_DEVICE_ID_CODEMERCS_IOW28:
@@ -454,14 +453,12 @@ static ssize_t iowarrior_write(struct file *file,
 		retval = count;
 		usb_free_urb(int_out_urb);
 		goto exit;
-		break;
 	default:
 		/* what do we have here ? An unsupported Product-ID ? */
 		dev_err(&dev->interface->dev, "%s - not supported for product=0x%x\n",
 			__func__, dev->product_id);
 		retval = -EFAULT;
 		goto exit;
-		break;
 	}
 error:
 	usb_free_coherent(dev->udev, dev->report_size, buf,
diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c
index b4ba79123d9d..f1201d4de297 100644
--- a/drivers/usb/serial/iuu_phoenix.c
+++ b/drivers/usb/serial/iuu_phoenix.c
@@ -850,7 +850,6 @@ static int iuu_uart_baud(struct usb_serial_port *port, u32 baud_base,
 	default:
 		kfree(dataout);
 		return IUU_INVALID_PARAMETER;
-		break;
 	}
 
 	switch (parity & 0xF0) {
@@ -864,7 +863,6 @@ static int iuu_uart_baud(struct usb_serial_port *port, u32 baud_base,
 	default:
 		kfree(dataout);
 		return IUU_INVALID_PARAMETER;
-		break;
 	}
 
 	status = bulk_immediate(port, dataout, DataCount);
diff --git a/drivers/usb/storage/freecom.c b/drivers/usb/storage/freecom.c
index 3d5f7d0ff0f1..2b098b55c4cb 100644
--- a/drivers/usb/storage/freecom.c
+++ b/drivers/usb/storage/freecom.c
@@ -431,7 +431,6 @@ static int freecom_transport(struct scsi_cmnd *srb, struct us_data *us)
 			     us->srb->sc_data_direction);
 		/* Return fail, SCSI seems to handle this better. */
 		return USB_STOR_TRANSPORT_FAILED;
-		break;
 	}
 
 	return USB_STOR_TRANSPORT_GOOD;
-- 
2.18.1

Re: [PATCH] usb: remove unneeded break

[Mathias Nyman]

On 19.10.2020 18.02, trix@redhat.com wrote:
> From: Tom Rix <trix@redhat.com>
> 
> A break is not needed if it is preceded by a return or goto
> 
> Signed-off-by: Tom Rix <trix@redhat.com>
> ---
>  drivers/usb/gadget/function/f_hid.c | 9 ---------
>  drivers/usb/host/xhci-mem.c         | 1 -
>  drivers/usb/misc/iowarrior.c        | 3 ---
>  drivers/usb/serial/iuu_phoenix.c    | 2 --
>  drivers/usb/storage/freecom.c       | 1 -
>  5 files changed, 16 deletions(-)

Would probably be better to split this into several patches.
The xhci change looks good (as a separate patch)

-Mathias