linux-kernel - Re: [PATCH 37/41] scsi: st: mark expected switch fall-throughs

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Message-ID: <99e896e6-b54b-540f-9c44-52dede4f2265@embeddedor.com>
Date:   Wed, 19 Dec 2018 18:08:07 -0600
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     Kai Mäkisara <Kai.Makisara@...umbus.fi>
Cc:     "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 37/41] scsi: st: mark expected switch fall-throughs

Hi,

Friendly ping:

Who can ack or review this patch, please?

Thanks
--
Gustavo

On 11/27/18 10:33 PM, Gustavo A. R. Silva wrote:
> In preparation to enabling -Wimplicit-fallthrough, mark switch cases
> where we are expecting to fall through.
> 
> Addresses-Coverity-ID: 114994 ("Missing break in switch")
> Addresses-Coverity-ID: 114995 ("Missing break in switch")
> Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
> ---
>   drivers/scsi/st.c | 4 ++++
>   1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
> index 7ff22d3f03e3..7c7a742a5ef7 100644
> --- a/drivers/scsi/st.c
> +++ b/drivers/scsi/st.c
> @@ -337,12 +337,14 @@ static void st_analyze_sense(struct st_request *SRpnt, struct st_cmdstatus *s)
>   		switch (sense[0] & 0x7f) {
>   		case 0x71:
>   			s->deferred = 1;
> +			/* fall through */
>   		case 0x70:
>   			s->fixed_format = 1;
>   			s->flags = sense[2] & 0xe0;
>   			break;
>   		case 0x73:
>   			s->deferred = 1;
> +			/* fall through */
>   		case 0x72:
>   			s->fixed_format = 0;
>   			ucp = scsi_sense_desc_find(sense, SCSI_SENSE_BUFFERSIZE, 4);
> @@ -2721,6 +2723,7 @@ static int st_int_ioctl(struct scsi_tape *STp, unsigned int cmd_in, unsigned lon
>   	switch (cmd_in) {
>   	case MTFSFM:
>   		chg_eof = 0;	/* Changed from the FSF after this */
> +		/* fall through */
>   	case MTFSF:
>   		cmd[0] = SPACE;
>   		cmd[1] = 0x01;	/* Space FileMarks */
> @@ -2735,6 +2738,7 @@ static int st_int_ioctl(struct scsi_tape *STp, unsigned int cmd_in, unsigned lon
>   		break;
>   	case MTBSFM:
>   		chg_eof = 0;	/* Changed from the FSF after this */
> +		/* fall through */
>   	case MTBSF:
>   		cmd[0] = SPACE;
>   		cmd[1] = 0x01;	/* Space FileMarks */
>