On Sun, 2009-07-26 at 16:29 +0200, Bartlomiej Zolnierkiewicz wrote:
> From: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
> Subject: [PATCH] scsi: remove superfluous NULL pointer check from scsi_kill_request()
>
> >From Dan's list:
>
> drivers/scsi/scsi_lib.c +1365 scsi_kill_request(9) warning: variable derefenced in initializer 'cmd'
> drivers/scsi/scsi_lib.c +1365 scsi_kill_request(9) warning: variable derefenced before check 'cmd'
>
> We dereference cmd (and possible OOPS if cmd == NULL) before starting
> the request so just remove the superfluous debugging code altogether.
>
> Reported-by: Dan Carpenter <error27@xxxxxxxxx>
> Cc: corbet@xxxxxxx
> Cc: eteo@xxxxxxxxxx
> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
> ---
> drivers/scsi/scsi_lib.c | 6 ------
> 1 file changed, 6 deletions(-)
>
> Index: b/drivers/scsi/scsi_lib.c
> ===================================================================
> --- a/drivers/scsi/scsi_lib.c
> +++ b/drivers/scsi/scsi_lib.c
> @@ -1365,12 +1365,6 @@ static void scsi_kill_request(struct req
>
> blk_start_request(req);
>
> - if (unlikely(cmd == NULL)) {
> - printk(KERN_CRIT "impossible request in %s.\n",
> - __func__);
> - BUG();
> - }
> -
> scsi_init_cmd_errh(cmd);
> cmd->result = DID_NO_CONNECT << 16;
> atomic_inc(&cmd->device->iorequest_cnt);
> --
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