Commit d2b3fe42 authored by Brian Norris's avatar Brian Norris Committed by Johannes Berg
Browse files

mac80211: don't warn about CW params when not using them

ieee80211_set_wmm_default() normally sets up the initial CW min/max for
each queue, except that it skips doing this if the driver doesn't
support ->conf_tx. We still end up calling drv_conf_tx() in some cases
(e.g., ieee80211_reconfig()), which also still won't do anything
useful...except it complains here about the invalid CW parameters.

Let's just skip the WARN if we weren't going to do anything useful with
the parameters.

Signed-off-by: default avatarBrian Norris <>

Signed-off-by: default avatarJohannes Berg <>
parent bcc27fab
......@@ -187,11 +187,16 @@ int drv_conf_tx(struct ieee80211_local *local,
if (!check_sdata_in_driver(sdata))
return -EIO;
if (WARN_ONCE(params->cw_min == 0 ||
params->cw_min > params->cw_max,
if (params->cw_min == 0 || params->cw_min > params->cw_max) {
* If we can't configure hardware anyway, don't warn. We may
* never have initialized the CW parameters.
"%s: invalid CW_min/CW_max: %d/%d\n",
sdata->name, params->cw_min, params->cw_max))
sdata->name, params->cw_min, params->cw_max);
return -EINVAL;
trace_drv_conf_tx(local, sdata, ac, params);
if (local->ops->conf_tx)
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