From 9699c88a4427d592655977a8cbeae46864df7700 Mon Sep 17 00:00:00 2001 From: =?utf8?q?J=C3=A9r=C3=B4me=20Pouiller?= Date: Tue, 17 Dec 2019 16:15:38 +0000 Subject: [PATCH] staging: wfx: delayed_unjoin cannot happen MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Original code allows to detect an unjoin request during a scan and delaying the unjoin request. However, it is far easier to just block the unjoin request until the end of the scan request. In fact, it is already the case since scan and unjoin are protected by conf_mutex. So, currently, the handling of delayed_unjoin is just dead code. Signed-off-by: Jérôme Pouiller Link: https://lore.kernel.org/r/20191217161318.31402-53-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman --- drivers/staging/wfx/scan.c | 7 +------ drivers/staging/wfx/sta.c | 14 -------------- drivers/staging/wfx/wfx.h | 1 - 3 files changed, 1 insertion(+), 21 deletions(-) diff --git a/drivers/staging/wfx/scan.c b/drivers/staging/wfx/scan.c index 540009b72240..bdbce6926e91 100644 --- a/drivers/staging/wfx/scan.c +++ b/drivers/staging/wfx/scan.c @@ -95,12 +95,7 @@ void wfx_hw_scan_work(struct work_struct *work) mutex_unlock(&wvif->wdev->conf_mutex); mutex_unlock(&wvif->scan_lock); __ieee80211_scan_completed_compat(wvif->wdev->hw, ret < 0); - if (wvif->delayed_unjoin) { - wvif->delayed_unjoin = false; - wfx_tx_lock(wvif->wdev); - if (!schedule_work(&wvif->unjoin_work)) - wfx_tx_unlock(wvif->wdev); - } else if (wvif->delayed_link_loss) { + if (wvif->delayed_link_loss) { wvif->delayed_link_loss = false; wfx_cqm_bssloss_sm(wvif, 1, 0, 0); } diff --git a/drivers/staging/wfx/sta.c b/drivers/staging/wfx/sta.c index 4354bb8081c5..7ae763e96455 100644 --- a/drivers/staging/wfx/sta.c +++ b/drivers/staging/wfx/sta.c @@ -66,10 +66,6 @@ void wfx_cqm_bssloss_sm(struct wfx_vif *wvif, int init, int good, int bad) wvif->delayed_link_loss = 0; cancel_work_sync(&wvif->bss_params_work); - /* If we have a pending unjoin */ - if (wvif->delayed_unjoin) - goto end; - if (init) { schedule_delayed_work(&wvif->bss_loss_work, HZ); wvif->bss_loss_state = 0; @@ -501,16 +497,6 @@ static void wfx_do_unjoin(struct wfx_vif *wvif) { mutex_lock(&wvif->wdev->conf_mutex); - if (!mutex_trylock(&wvif->scan_lock)) { - if (wvif->delayed_unjoin) - dev_dbg(wvif->wdev->dev, - "delayed unjoin is already scheduled\n"); - else - wvif->delayed_unjoin = true; - goto done; - } - mutex_unlock(&wvif->scan_lock); - wvif->delayed_link_loss = false; if (!wvif->state) diff --git a/drivers/staging/wfx/wfx.h b/drivers/staging/wfx/wfx.h index b5f763c3fac7..5e7c911db024 100644 --- a/drivers/staging/wfx/wfx.h +++ b/drivers/staging/wfx/wfx.h @@ -122,7 +122,6 @@ struct wfx_vif { struct work_struct set_cts_work; int join_complete_status; - bool delayed_unjoin; struct work_struct unjoin_work; /* avoid some operations in parallel with scan */ -- 2.11.0