This time, replying to the list as well.

-Jack
P.S. sorry for the delay, I was swamped.

On Tue, 07 Jan 2014 14:01:18 +0100
Paul Bolle <pebo...@tiscali.nl> wrote:

> +     } else {
> +             /* state == RES_CQ_HW */
> +             if (r->com.state != RES_CQ_ALLOCATED)

if (state != RES_CQ_HW || r->com.state != RES_CQ_ALLOCATED)
to protect against any bad calls to this function
(although I know that currently there are none).

This also preserves the behavior of the switch statement.

>                       err = -EINVAL;
> -             }
> +             else
> +                     err = 0;
> +     }
>  
> -             if (!err) {
> -                     r->com.from_state = r->com.state;
> -                     r->com.to_state = state;
> -                     r->com.state = RES_CQ_BUSY;
> -                     if (cq)
> -                             *cq = r;
> -             }
> +     if (!err) {
> +             r->com.from_state = r->com.state;
> +             r->com.to_state = state;
> +             r->com.state = RES_CQ_BUSY;

Please keep the "if" here.  Protects against (future) bad calls.

> +             *cq = r;
>       }

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