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SubjectRe: [PATCH] net/rose: remove redundant assignment to variable failed
On Tue, Jan 07, 2020 at 03:24:15PM +0000, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
>
> The variable failed is being assigned a value that is never read, the
> following goto statement jumps to the end of the function and variable
> failed is not referenced at all. Remove the redundant assignment.
>
> Addresses-Coverity: ("Unused value")
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
> net/rose/rose_route.c | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/net/rose/rose_route.c b/net/rose/rose_route.c
> index c53307623236..5277631fa14c 100644
> --- a/net/rose/rose_route.c
> +++ b/net/rose/rose_route.c
> @@ -696,7 +696,6 @@ struct rose_neigh *rose_get_neigh(rose_address *addr, unsigned char *cause,
> for (i = 0; i < node->count; i++) {
> if (!rose_ftimer_running(node->neighbour[i])) {
> res = node->neighbour[i];
> - failed = 0;
> goto out;
> }
> failed = 1;

I don't know the code, but I would have expected the out label to come
earlier:


}
if (!route_frame) { /* connect request */
for (node = rose_node_list; node != NULL; node = node->next) {
if (rosecmpm(addr, &node->address, node->mask) == 0) {
for (i = 0; i < node->count; i++) {
if (!rose_ftimer_running(node->neighbour[i])) {
res = node->neighbour[i];
failed = 0;
goto out;
}
failed = 1;
}
}
}
}
<--------*********** I would have expected it to be right here.
if (failed) {
*cause = ROSE_OUT_OF_ORDER;
*diagnostic = 0;
} else {
*cause = ROSE_NOT_OBTAINABLE;
*diagnostic = 0;
}
out:
if (!route_frame) spin_unlock_bh(&rose_node_list_lock);
return res;
regards,
dan carpenter

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