On 05/24/2017 02:34 AM, Bart Van Assche wrote:
> This simplifies the memset() call in scsi_initialize_rq() and avoids
> that any stale data is left behind in struct scsi_request.
> 
> Signed-off-by: Bart Van Assche <bart.vanass...@sandisk.com>
> Reviewed-by: Christoph Hellwig <h...@lst.de>
> Cc: Hannes Reinecke <h...@suse.com>
> ---
>  drivers/scsi/scsi_lib.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
> index 10c6adb208dc..4b24c45fa113 100644
> --- a/drivers/scsi/scsi_lib.c
> +++ b/drivers/scsi/scsi_lib.c
> @@ -1159,12 +1159,10 @@ static void scsi_initialize_rq(struct request *rq)
>       void *buf = cmd->sense_buffer;
>       void *prot = cmd->prot_sdb;
>  
> -     /* zero out the cmd, except for the embedded scsi_request */
> -     memset((char *)cmd + sizeof(cmd->req), 0,
> -            sizeof(*cmd) - sizeof(cmd->req));
> +     memset(cmd, 0, sizeof(*cmd));
>       scsi_req_init(&cmd->req);
>       cmd->device = dev;
> -     cmd->req.sense = cmd->sense_buffer;
> +     cmd->req.sense = buf;
>       cmd->sense_buffer = buf;
>       cmd->prot_sdb = prot;
>       INIT_DELAYED_WORK(&cmd->abort_work, scmd_eh_abort_handler);
> 
Reviewed-by: Hannes Reinecke <h...@suse.com>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                Teamlead Storage & Networking
h...@suse.de                                   +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton
HRB 21284 (AG Nürnberg)

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