From d2b3fe42bc629c2d4002f652b3abdfb2e72991c7 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Wed, 17 Jul 2019 18:57:12 -0700 Subject: [PATCH] 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: Brian Norris Link: https://lore.kernel.org/r/20190718015712.197499-1-briannorris@chromium.org Signed-off-by: Johannes Berg --- net/mac80211/driver-ops.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/net/mac80211/driver-ops.c b/net/mac80211/driver-ops.c index acd4afb..c9a8a24 100644 --- a/net/mac80211/driver-ops.c +++ b/net/mac80211/driver-ops.c @@ -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, - "%s: invalid CW_min/CW_max: %d/%d\n", - sdata->name, 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. + */ + WARN_ONCE(local->ops->conf_tx, + "%s: invalid CW_min/CW_max: %d/%d\n", + sdata->name, params->cw_min, params->cw_max); return -EINVAL; + } trace_drv_conf_tx(local, sdata, ac, params); if (local->ops->conf_tx) -- 2.7.4