On Sat, Jan 18, 2020 at 04:06:28PM +0800, Bo YU wrote:
> Fixes gcc '-Wunused-but-set-variable' warning:
>
> drivers/gpu/drm/drm_dp_mst_topology.c:3693:16: warning: variable
> ‘origlen’ set but not used [-Wunused-but-set-variable]
> int replylen, origlen, curreply;
>
> It looks like never use variable origlen after assign value to it.
>
> Fixes: ad7f8a1f9ced7 (drm/helper: add Displayport multi-stream helper (v0.6))
> Signed-off-by: Bo YU <tsu.yubo@xxxxxxxxx>
Queued in drm-misc-next, thanks for your patch.
-Daniel
> ---
> drivers/gpu/drm/drm_dp_mst_topology.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
> index 4b74193b89ce..4c76e673206b 100644
> --- a/drivers/gpu/drm/drm_dp_mst_topology.c
> +++ b/drivers/gpu/drm/drm_dp_mst_topology.c
> @@ -3690,7 +3690,7 @@ static bool drm_dp_get_one_sb_msg(struct drm_dp_mst_topology_mgr *mgr, bool up)
> {
> int len;
> u8 replyblock[32];
> - int replylen, origlen, curreply;
> + int replylen, curreply;
> int ret;
> struct drm_dp_sideband_msg_rx *msg;
> int basereg = up ? DP_SIDEBAND_MSG_UP_REQ_BASE : DP_SIDEBAND_MSG_DOWN_REP_BASE;
> @@ -3710,7 +3710,6 @@ static bool drm_dp_get_one_sb_msg(struct drm_dp_mst_topology_mgr *mgr, bool up)
> }
> replylen = msg->curchunk_len + msg->curchunk_hdrlen;
>
> - origlen = replylen;
> replylen -= len;
> curreply = len;
> while (replylen > 0) {
> --
> 2.11.0
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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