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Date:   Mon, 29 Apr 2019 14:44:27 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     "'Gustavo A. R. Silva'" <gustavo@...eddedor.com>,
        Valentina Manea <valentina.manea.m@...il.com>,
        Shuah Khan <shuah@...nel.org>,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>
CC:     "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Kees Cook <keescook@...omium.org>
Subject: RE: [PATCH] usbip: vhci_hcd: Mark expected switch fall-through

From: Gustavo A. R. Silva
> Sent: 29 April 2019 15:40
> In preparation to enabling -Wimplicit-fallthrough, mark switch
> cases where we are expecting to fall through.
...
> diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c
> index 667d9c0ec905..000ab7225717 100644
> --- a/drivers/usb/usbip/vhci_hcd.c
> +++ b/drivers/usb/usbip/vhci_hcd.c
> @@ -508,6 +508,7 @@ static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
>  		case USB_PORT_FEAT_U1_TIMEOUT:
>  			usbip_dbg_vhci_rh(
>  				" SetPortFeature: USB_PORT_FEAT_U1_TIMEOUT\n");
> +			/* Fall through */
>  		case USB_PORT_FEAT_U2_TIMEOUT:
>  			usbip_dbg_vhci_rh(
>  				" SetPortFeature: USB_PORT_FEAT_U2_TIMEOUT\n");

That doesn't look right, both debug messages seem to get printed.

	David

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