In preparation to enable -Wimplicit-fallthrough for Clang, fix multiple warnings by explicitly adding multiple break/return/fallthrough statements instead of letting the code fall through to the next case. Link: https://github.com/KSPP/linux/issues/115 Signed-off-by: Gustavo A. R. Silva <gustavoars@xxxxxxxxxx> --- drivers/usb/gadget/function/f_fs.c | 2 ++ drivers/usb/gadget/function/f_loopback.c | 2 +- drivers/usb/gadget/function/f_sourcesink.c | 1 + drivers/usb/gadget/udc/dummy_hcd.c | 2 ++ drivers/usb/host/fotg210-hcd.c | 2 +- drivers/usb/host/isp116x-hcd.c | 1 + drivers/usb/host/max3421-hcd.c | 1 + drivers/usb/host/oxu210hp-hcd.c | 1 + drivers/usb/misc/yurex.c | 1 + drivers/usb/musb/tusb6010.c | 1 + drivers/usb/storage/ene_ub6250.c | 1 + drivers/usb/storage/uas.c | 1 + 12 files changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index 046f770a76da..7f9c4e35d3db 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -678,6 +678,8 @@ static __poll_t ffs_ep0_poll(struct file *file, poll_table *wait) mask |= (EPOLLIN | EPOLLOUT); break; } + break; + case FFS_CLOSING: break; case FFS_DEACTIVATED: diff --git a/drivers/usb/gadget/function/f_loopback.c b/drivers/usb/gadget/function/f_loopback.c index 1803646b3678..b56ad7c3838b 100644 --- a/drivers/usb/gadget/function/f_loopback.c +++ b/drivers/usb/gadget/function/f_loopback.c @@ -274,7 +274,7 @@ static void loopback_complete(struct usb_ep *ep, struct usb_request *req) default: ERROR(cdev, "%s loop complete --> %d, %d/%d\n", ep->name, status, req->actual, req->length); - /* FALLTHROUGH */ + fallthrough; /* NOTE: since this driver doesn't maintain an explicit record * of requests it submitted (just maintains qlen count), we diff --git a/drivers/usb/gadget/function/f_sourcesink.c b/drivers/usb/gadget/function/f_sourcesink.c index ed68a4860b7d..5a201ba7b155 100644 --- a/drivers/usb/gadget/function/f_sourcesink.c +++ b/drivers/usb/gadget/function/f_sourcesink.c @@ -559,6 +559,7 @@ static void source_sink_complete(struct usb_ep *ep, struct usb_request *req) #if 1 DBG(cdev, "%s complete --> %d, %d/%d\n", ep->name, status, req->actual, req->length); + break; #endif case -EREMOTEIO: /* short read */ break; diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c index 53a227217f1c..bb0dc67ecdd3 100644 --- a/drivers/usb/gadget/udc/dummy_hcd.c +++ b/drivers/usb/gadget/udc/dummy_hcd.c @@ -553,6 +553,7 @@ static int dummy_enable(struct usb_ep *_ep, /* we'll fake any legal size */ break; /* save a return statement */ + fallthrough; default: goto done; } @@ -595,6 +596,7 @@ static int dummy_enable(struct usb_ep *_ep, if (max <= 1023) break; /* save a return statement */ + fallthrough; default: goto done; } diff --git a/drivers/usb/host/fotg210-hcd.c b/drivers/usb/host/fotg210-hcd.c index 1d94fcfac2c2..0451943f0bc4 100644 --- a/drivers/usb/host/fotg210-hcd.c +++ b/drivers/usb/host/fotg210-hcd.c @@ -5276,7 +5276,7 @@ static int fotg210_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, */ if (urb->transfer_buffer_length > (16 * 1024)) return -EMSGSIZE; - /* FALLTHROUGH */ + fallthrough; /* case PIPE_BULK: */ default: if (!qh_urb_transaction(fotg210, urb, &qtd_list, mem_flags)) diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c index 3055d9abfec3..8544a2a2c1e6 100644 --- a/drivers/usb/host/isp116x-hcd.c +++ b/drivers/usb/host/isp116x-hcd.c @@ -1447,6 +1447,7 @@ static int isp116x_bus_resume(struct usb_hcd *hcd) val &= ~HCCONTROL_HCFS; val |= HCCONTROL_USB_RESUME; isp116x_write_reg32(isp116x, HCCONTROL, val); + break; case HCCONTROL_USB_RESUME: break; case HCCONTROL_USB_OPER: diff --git a/drivers/usb/host/max3421-hcd.c b/drivers/usb/host/max3421-hcd.c index 0894f6caccb2..0b5d47e6aab2 100644 --- a/drivers/usb/host/max3421-hcd.c +++ b/drivers/usb/host/max3421-hcd.c @@ -1537,6 +1537,7 @@ max3421_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags) __func__, urb->interval); return -EINVAL; } + break; default: break; } diff --git a/drivers/usb/host/oxu210hp-hcd.c b/drivers/usb/host/oxu210hp-hcd.c index 27dbbe1b28b1..aa42df39e6a1 100644 --- a/drivers/usb/host/oxu210hp-hcd.c +++ b/drivers/usb/host/oxu210hp-hcd.c @@ -1365,6 +1365,7 @@ __acquires(oxu->lock) switch (urb->status) { case -EINPROGRESS: /* success */ urb->status = 0; + break; default: /* fault */ break; case -EREMOTEIO: /* fault or normal */ diff --git a/drivers/usb/misc/yurex.c b/drivers/usb/misc/yurex.c index e3165d79b5f6..73ebfa6e9715 100644 --- a/drivers/usb/misc/yurex.c +++ b/drivers/usb/misc/yurex.c @@ -137,6 +137,7 @@ static void yurex_interrupt(struct urb *urb) dev_err(&dev->interface->dev, "%s - overflow with length %d, actual length is %d\n", __func__, YUREX_BUF_SIZE, dev->urb->actual_length); + return; case -ECONNRESET: case -ENOENT: case -ESHUTDOWN: diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c index c26683a2702b..c42937692207 100644 --- a/drivers/usb/musb/tusb6010.c +++ b/drivers/usb/musb/tusb6010.c @@ -467,6 +467,7 @@ static void musb_do_idle(struct timer_list *t) fallthrough; case OTG_STATE_A_IDLE: tusb_musb_set_vbus(musb, 0); + break; default: break; } diff --git a/drivers/usb/storage/ene_ub6250.c b/drivers/usb/storage/ene_ub6250.c index 98c1aa594e6c..5f7d678502be 100644 --- a/drivers/usb/storage/ene_ub6250.c +++ b/drivers/usb/storage/ene_ub6250.c @@ -861,6 +861,7 @@ static int ms_count_freeblock(struct us_data *us, u16 PhyBlock) case MS_LB_NOT_USED: case MS_LB_NOT_USED_ERASED: Count++; + break; default: break; } diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c index c8a577309e8f..6bd33c57fdcb 100644 --- a/drivers/usb/storage/uas.c +++ b/drivers/usb/storage/uas.c @@ -690,6 +690,7 @@ static int uas_queuecommand_lck(struct scsi_cmnd *cmnd, fallthrough; case DMA_TO_DEVICE: cmdinfo->state |= ALLOC_DATA_OUT_URB | SUBMIT_DATA_OUT_URB; + break; case DMA_NONE: break; } -- 2.27.0
