[PATCH] usb: Use fallthrough pseudo-keyword

From: Gustavo A. R. Silva
Date: Tue Jul 07 2020 - 15:50:44 EST

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Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary
fall-through markings when it is the case.

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through

Signed-off-by: Gustavo A. R. Silva <gustavoars@xxxxxxxxxx>
---
drivers/usb/atm/cxacru.c | 4 ++--
drivers/usb/cdns3/gadget.c | 4 ++--
drivers/usb/class/usbtmc.c | 2 +-
drivers/usb/core/config.c | 2 +-
drivers/usb/core/hcd.c | 8 ++++----
drivers/usb/core/hub.c | 2 +-
drivers/usb/core/urb.c | 4 ++--
drivers/usb/host/fotg210-hcd.c | 8 ++++----
drivers/usb/host/isp1362-hcd.c | 2 +-
drivers/usb/host/max3421-hcd.c | 6 +++---
drivers/usb/host/oxu210hp-hcd.c | 8 ++++----
drivers/usb/image/mdc800.c | 2 +-
drivers/usb/isp1760/isp1760-hcd.c | 4 ++--
drivers/usb/misc/appledisplay.c | 2 +-
drivers/usb/misc/usbtest.c | 8 ++++----
drivers/usb/misc/yurex.c | 2 +-
drivers/usb/renesas_usbhs/mod_gadget.c | 2 +-
drivers/usb/renesas_usbhs/pipe.c | 2 +-
18 files changed, 36 insertions(+), 36 deletions(-)

diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c
index 5d41f85a7445..ea66f8f385ba 100644
--- a/drivers/usb/atm/cxacru.c
+++ b/drivers/usb/atm/cxacru.c
@@ -408,7 +408,7 @@ static ssize_t adsl_state_store(struct device *dev,
case CXPOLL_STOPPING:
/* abort stop request */
instance->poll_state = CXPOLL_POLLING;
- /* fall through */
+ fallthrough;
case CXPOLL_POLLING:
case CXPOLL_SHUTDOWN:
/* don't start polling */
@@ -802,7 +802,7 @@ static int cxacru_atm_start(struct usbatm_data *usbatm_instance,
case CXPOLL_STOPPING:
/* abort stop request */
instance->poll_state = CXPOLL_POLLING;
- /* fall through */
+ fallthrough;
case CXPOLL_POLLING:
case CXPOLL_SHUTDOWN:
/* don't start polling */
diff --git a/drivers/usb/cdns3/gadget.c b/drivers/usb/cdns3/gadget.c
index 5e24c2e57c0d..d1e1353fe0b1 100644
--- a/drivers/usb/cdns3/gadget.c
+++ b/drivers/usb/cdns3/gadget.c
@@ -2814,7 +2814,7 @@ static int cdns3_gadget_udc_start(struct usb_gadget *gadget,
dev_err(priv_dev->dev,
"invalid maximum_speed parameter %d\n",
max_speed);
- /* fall through */
+ fallthrough;
case USB_SPEED_UNKNOWN:
/* default to superspeed */
max_speed = USB_SPEED_SUPER;
@@ -3055,7 +3055,7 @@ static int cdns3_gadget_start(struct cdns3 *cdns)
default:
dev_err(cdns->dev, "invalid maximum_speed parameter %d\n",
max_speed);
- /* fall through */
+ fallthrough;
case USB_SPEED_UNKNOWN:
/* default to superspeed */
max_speed = USB_SPEED_SUPER;
diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
index ffc9c6fdd7e1..e8f558d07bb2 100644
--- a/drivers/usb/class/usbtmc.c
+++ b/drivers/usb/class/usbtmc.c
@@ -2282,7 +2282,7 @@ static void usbtmc_interrupt(struct urb *urb)
case -EOVERFLOW:
dev_err(dev, "overflow with length %d, actual length is %d\n",
data->iin_wMaxPacketSize, urb->actual_length);
- /* fall through */
+ fallthrough;
case -ECONNRESET:
case -ENOENT:
case -ESHUTDOWN:
diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
index b7918f695434..de00b5981406 100644
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -427,7 +427,7 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno,
i = maxp & (BIT(12) | BIT(11));
maxp &= ~i;
}
- /* fallthrough */
+ fallthrough;
default:
maxpacket_maxes = high_speed_maxpacket_maxes;
break;
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index de624c47e190..a33b849e8beb 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -564,7 +564,7 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb)
case DeviceRequest | USB_REQ_GET_CONFIGURATION:
tbuf[0] = 1;
len = 1;
- /* FALLTHROUGH */
+ fallthrough;
case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
break;
case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
@@ -633,7 +633,7 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb)
case DeviceRequest | USB_REQ_GET_INTERFACE:
tbuf[0] = 0;
len = 1;
- /* FALLTHROUGH */
+ fallthrough;
case DeviceOutRequest | USB_REQ_SET_INTERFACE:
break;
case DeviceOutRequest | USB_REQ_SET_ADDRESS:
@@ -651,7 +651,7 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb)
tbuf[0] = 0;
tbuf[1] = 0;
len = 2;
- /* FALLTHROUGH */
+ fallthrough;
case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
case EndpointOutRequest | USB_REQ_SET_FEATURE:
dev_dbg (hcd->self.controller, "no endpoint features yet\n");
@@ -2726,7 +2726,7 @@ int usb_add_hcd(struct usb_hcd *hcd,
case HCD_USB32:
rhdev->rx_lanes = 2;
rhdev->tx_lanes = 2;
- /* fall through */
+ fallthrough;
case HCD_USB31:
rhdev->speed = USB_SPEED_SUPER_PLUS;
break;
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index b1e14beaac5f..9bffaca9610b 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -4698,7 +4698,7 @@ hub_port_init(struct usb_hub *hub, struct usb_device *udev, int port1,
r = 0;
break;
}
- /* FALL THROUGH */
+ fallthrough;
default:
if (r == 0)
r = -EPROTO;
diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c
index da923ec17612..7bc23469f4e4 100644
--- a/drivers/usb/core/urb.c
+++ b/drivers/usb/core/urb.c
@@ -486,7 +486,7 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags)
case USB_ENDPOINT_XFER_INT:
if (is_out)
allowed |= URB_ZERO_PACKET;
- /* FALLTHROUGH */
+ fallthrough;
default: /* all non-iso endpoints */
if (!is_out)
allowed |= URB_SHORT_NOT_OK;
@@ -519,7 +519,7 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags)
if ((urb->interval < 6)
&& (xfertype == USB_ENDPOINT_XFER_INT))
return -EINVAL;
- /* fall through */
+ fallthrough;
default:
if (urb->interval <= 0)
return -EINVAL;
diff --git a/drivers/usb/host/fotg210-hcd.c b/drivers/usb/host/fotg210-hcd.c
index f967adf2d8df..6f4960724b3a 100644
--- a/drivers/usb/host/fotg210-hcd.c
+++ b/drivers/usb/host/fotg210-hcd.c
@@ -2807,7 +2807,7 @@ static struct fotg210_qh *qh_make(struct fotg210_hcd *fotg210, struct urb *urb,
switch (urb->dev->speed) {
case USB_SPEED_LOW:
info1 |= QH_LOW_SPEED;
- /* FALL THROUGH */
+ fallthrough;

case USB_SPEED_FULL:
/* EPS 0 means "full" */
@@ -4634,7 +4634,7 @@ static inline int scan_frame_queue(struct fotg210_hcd *fotg210, unsigned frame,
default:
fotg210_dbg(fotg210, "corrupt type %d frame %d shadow %p\n",
type, frame, q.ptr);
- /* FALL THROUGH */
+ fallthrough;
case Q_TYPE_QH:
case Q_TYPE_FSTN:
/* End of the iTDs and siTDs */
@@ -5412,7 +5412,7 @@ static void fotg210_endpoint_disable(struct usb_hcd *hcd,
*/
if (tmp)
start_unlink_async(fotg210, qh);
- /* FALL THROUGH */
+ fallthrough;
case QH_STATE_UNLINK: /* wait for hw to finish? */
case QH_STATE_UNLINK_WAIT:
idle_timeout:
@@ -5426,7 +5426,7 @@ static void fotg210_endpoint_disable(struct usb_hcd *hcd,
qh_destroy(fotg210, qh);
break;
}
- /* fall through */
+ fallthrough;
default:
/* caller was supposed to have unlinked any requests;
* that's not our job. just leak this memory.
diff --git a/drivers/usb/host/isp1362-hcd.c b/drivers/usb/host/isp1362-hcd.c
index 4a3a2852523f..2cecb36d241b 100644
--- a/drivers/usb/host/isp1362-hcd.c
+++ b/drivers/usb/host/isp1362-hcd.c
@@ -1748,7 +1748,7 @@ static int isp1362_bus_suspend(struct usb_hcd *hcd)
isp1362_hcd->hc_control &= ~OHCI_CTRL_HCFS;
isp1362_hcd->hc_control |= OHCI_USB_RESET;
isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control);
- /* FALL THROUGH */
+ fallthrough;
case OHCI_USB_RESET:
status = -EBUSY;
pr_warn("%s: needs reinit!\n", __func__);
diff --git a/drivers/usb/host/max3421-hcd.c b/drivers/usb/host/max3421-hcd.c
index 8819f502b6a6..05828c0ab7de 100644
--- a/drivers/usb/host/max3421-hcd.c
+++ b/drivers/usb/host/max3421-hcd.c
@@ -925,7 +925,7 @@ max3421_handle_error(struct usb_hcd *hcd, u8 hrsl)
spi_wr8(hcd, MAX3421_REG_HCTL,
BIT(sndtog + MAX3421_HCTL_SNDTOG0_BIT));
}
- /* FALL THROUGH */
+ fallthrough;
case MAX3421_HRSL_BADBC: /* bad byte count */
case MAX3421_HRSL_PIDERR: /* received PID is corrupted */
case MAX3421_HRSL_PKTERR: /* packet error (stuff, EOP) */
@@ -1715,7 +1715,7 @@ max3421_hub_control(struct usb_hcd *hcd, u16 type_req, u16 value, u16 index,
dev_dbg(hcd->self.controller, "power-off\n");
max3421_gpout_set_value(hcd, pdata->vbus_gpout,
!pdata->vbus_active_level);
- /* FALLS THROUGH */
+ fallthrough;
default:
max3421_hcd->port_status &= ~(1 << value);
}
@@ -1768,7 +1768,7 @@ max3421_hub_control(struct usb_hcd *hcd, u16 type_req, u16 value, u16 index,
break;
case USB_PORT_FEAT_RESET:
max3421_reset_port(hcd);
- /* FALLS THROUGH */
+ fallthrough;
default:
if ((max3421_hcd->port_status & USB_PORT_STAT_POWER)
!= 0)
diff --git a/drivers/usb/host/oxu210hp-hcd.c b/drivers/usb/host/oxu210hp-hcd.c
index 120666a0d590..913d31a53e96 100644
--- a/drivers/usb/host/oxu210hp-hcd.c
+++ b/drivers/usb/host/oxu210hp-hcd.c
@@ -1858,7 +1858,7 @@ static struct ehci_qh *qh_make(struct oxu_hcd *oxu,
switch (urb->dev->speed) {
case USB_SPEED_LOW:
info1 |= (1 << 12); /* EPS "low" */
- /* FALL THROUGH */
+ fallthrough;

case USB_SPEED_FULL:
/* EPS 0 means "full" */
@@ -3378,7 +3378,7 @@ static int oxu_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
switch (qh->qh_state) {
case QH_STATE_LINKED:
intr_deschedule(oxu, qh);
- /* FALL THROUGH */
+ fallthrough;
case QH_STATE_IDLE:
qh_completions(oxu, qh);
break;
@@ -3450,7 +3450,7 @@ static void oxu_endpoint_disable(struct usb_hcd *hcd,
if (!tmp)
goto nogood;
unlink_async(oxu, qh);
- /* FALL THROUGH */
+ fallthrough;
case QH_STATE_UNLINK: /* wait for hw to finish? */
idle_timeout:
spin_unlock_irqrestore(&oxu->lock, flags);
@@ -3461,7 +3461,7 @@ static void oxu_endpoint_disable(struct usb_hcd *hcd,
qh_put(qh);
break;
}
- /* fall through */
+ fallthrough;
default:
nogood:
/* caller was supposed to have unlinked any requests;
diff --git a/drivers/usb/image/mdc800.c b/drivers/usb/image/mdc800.c
index 2388674042a9..fc0e22cc6fda 100644
--- a/drivers/usb/image/mdc800.c
+++ b/drivers/usb/image/mdc800.c
@@ -880,7 +880,7 @@ static ssize_t mdc800_device_write (struct file *file, const char __user *buf, s
return -EIO;
}
mdc800->pic_len=-1;
- /* fall through */
+ fallthrough;

case 0x09: /* Download Thumbnail */
mdc800->download_left=answersize+64;
diff --git a/drivers/usb/isp1760/isp1760-hcd.c b/drivers/usb/isp1760/isp1760-hcd.c
index 579a21bd70ad..dd74ab7a2f9c 100644
--- a/drivers/usb/isp1760/isp1760-hcd.c
+++ b/drivers/usb/isp1760/isp1760-hcd.c
@@ -788,11 +788,11 @@ static void collect_qtds(struct usb_hcd *hcd, struct isp1760_qh *qh,
mem_reads8(hcd->regs, qtd->payload_addr,
qtd->data_buffer,
qtd->actual_length);
- /* Fall through */
+ fallthrough;
case OUT_PID:
qtd->urb->actual_length +=
qtd->actual_length;
- /* Fall through */
+ fallthrough;
case SETUP_PID:
break;
}
diff --git a/drivers/usb/misc/appledisplay.c b/drivers/usb/misc/appledisplay.c
index ba1eaabc7796..91cfd917f6df 100644
--- a/drivers/usb/misc/appledisplay.c
+++ b/drivers/usb/misc/appledisplay.c
@@ -89,7 +89,7 @@ static void appledisplay_complete(struct urb *urb)
dev_err(dev,
"OVERFLOW with data length %d, actual length is %d\n",
ACD_URB_BUFFER_LEN, pdata->urb->actual_length);
- /* fall through */
+ fallthrough;
case -ECONNRESET:
case -ENOENT:
case -ESHUTDOWN:
diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c
index 98ada1a3425c..0f5aa5ed416c 100644
--- a/drivers/usb/misc/usbtest.c
+++ b/drivers/usb/misc/usbtest.c
@@ -182,7 +182,7 @@ get_endpoints(struct usbtest_dev *dev, struct usb_interface *intf)
case USB_ENDPOINT_XFER_ISOC:
if (dev->info->iso)
endpoint_update(edi, &iso_in, &iso_out, e);
- /* FALLTHROUGH */
+ fallthrough;
default:
continue;
}
@@ -364,7 +364,7 @@ static void simple_fill_buf(struct urb *urb)

switch (pattern) {
default:
- /* FALLTHROUGH */
+ fallthrough;
case 0:
memset(buf, 0, len);
break;
@@ -681,7 +681,7 @@ static int get_altsetting(struct usbtest_dev *dev)
return dev->buf[0];
case 0:
retval = -ERANGE;
- /* FALLTHROUGH */
+ fallthrough;
default:
return retval;
}
@@ -1951,7 +1951,7 @@ static void complicated_callback(struct urb *urb)
dev_err(&ctx->dev->intf->dev,
"resubmit err %d\n",
status);
- /* FALLTHROUGH */
+ fallthrough;
case -ENODEV: /* disconnected */
case -ESHUTDOWN: /* endpoint disabled */
ctx->submit_error = 1;
diff --git a/drivers/usb/misc/yurex.c b/drivers/usb/misc/yurex.c
index be0505b8b5d4..6e7d34e7fec4 100644
--- a/drivers/usb/misc/yurex.c
+++ b/drivers/usb/misc/yurex.c
@@ -472,7 +472,7 @@ static ssize_t yurex_write(struct file *file, const char __user *user_buffer,
break;
case CMD_SET:
data++;
- /* FALL THROUGH */
+ fallthrough;
case '0' ... '9':
set = 1;
c = c2 = simple_strtoull(data, NULL, 0);
diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c
index 53489cafecc1..105132ae87ac 100644
--- a/drivers/usb/renesas_usbhs/mod_gadget.c
+++ b/drivers/usb/renesas_usbhs/mod_gadget.c
@@ -509,7 +509,7 @@ static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv,
case READ_STATUS_STAGE:
case WRITE_STATUS_STAGE:
usbhs_dcp_control_transfer_done(pipe);
- /* fall through */
+ fallthrough;
default:
return ret;
}
diff --git a/drivers/usb/renesas_usbhs/pipe.c b/drivers/usb/renesas_usbhs/pipe.c
index 9e5afdde1adb..e7334b7fb3a6 100644
--- a/drivers/usb/renesas_usbhs/pipe.c
+++ b/drivers/usb/renesas_usbhs/pipe.c
@@ -308,7 +308,7 @@ static void __usbhsp_pid_try_nak_if_stall(struct usbhs_pipe *pipe)
switch (pid) {
case PID_STALL11:
usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL10);
- /* fall-through */
+ fallthrough;
case PID_STALL10:
usbhsp_pipectrl_set(pipe, PID_MASK, PID_NAK);
}

Next message: Sven Eckelmann: "Re: general protection fault in batadv_iv_ogm_schedule_buff (2)"
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