[PATCH 5.15 102/317] wireless: Remove redundant 'flush_workqueue()' calls

Sasha Levin
2024-03-24T23:36:41Z

From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>

[ Upstream commit ff1cc2fa3055ee4c83839f38b74b4ee370a2291c ]

'destroy_workqueue()' already drains the queue before destroying it, so
there is no need to flush it explicitly.

Remove the redundant 'flush_workqueue()' calls.

This was generated with coccinelle:

@@
expression E;
@@
- flush_workqueue(E);
destroy_workqueue(E);

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/0855d51423578ad019c0264dad3fe47a2e8af9c7.1633849511.git.christophe.jaillet@wanadoo.fr
Stable-dep-of: cb5942b77c05 ("wifi: wilc1000: prevent use-after-free on vif when cleaning up all interfaces")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/ath/ath10k/core.c | 3 ---
drivers/net/wireless/ath/ath10k/sdio.c | 1 -
drivers/net/wireless/intel/iwlegacy/3945-mac.c | 1 -
drivers/net/wireless/intel/iwlegacy/4965-mac.c | 1 -
drivers/net/wireless/intel/iwlwifi/dvm/main.c | 1 -
drivers/net/wireless/marvell/mwifiex/cfg80211.c | 2 --
drivers/net/wireless/marvell/mwifiex/main.c | 2 --
drivers/net/wireless/microchip/wilc1000/netdev.c | 1 -
drivers/net/wireless/quantenna/qtnfmac/core.c | 2 --
drivers/net/wireless/quantenna/qtnfmac/pcie/pcie.c | 2 --
drivers/net/wireless/realtek/rtlwifi/pci.c | 1 -
drivers/net/wireless/rndis_wlan.c | 2 --
drivers/net/wireless/st/cw1200/bh.c | 2 --
13 files changed, 21 deletions(-)

diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c
index 58e86e662ab83..eca24a61165ee 100644
--- a/drivers/net/wireless/ath/ath10k/core.c
+++ b/drivers/net/wireless/ath/ath10k/core.c
@@ -3544,13 +3544,10 @@ EXPORT_SYMBOL(ath10k_core_create);

void ath10k_core_destroy(struct ath10k *ar)
{
- flush_workqueue(ar->workqueue);
destroy_workqueue(ar->workqueue);

- flush_workqueue(ar->workqueue_aux);
destroy_workqueue(ar->workqueue_aux);

- flush_workqueue(ar->workqueue_tx_complete);
destroy_workqueue(ar->workqueue_tx_complete);

ath10k_debug_destroy(ar);
diff --git a/drivers/net/wireless/ath/ath10k/sdio.c b/drivers/net/wireless/ath/ath10k/sdio.c
index eb705214f3f0a..63e1c2d783c5f 100644
--- a/drivers/net/wireless/ath/ath10k/sdio.c
+++ b/drivers/net/wireless/ath/ath10k/sdio.c
@@ -2650,7 +2650,6 @@ static void ath10k_sdio_remove(struct sdio_func *func)

ath10k_core_destroy(ar);

- flush_workqueue(ar_sdio->workqueue);
destroy_workqueue(ar_sdio->workqueue);
}

diff --git a/drivers/net/wireless/intel/iwlegacy/3945-mac.c b/drivers/net/wireless/intel/iwlegacy/3945-mac.c
index 04c149ff745e9..dea0012fcdc79 100644
--- a/drivers/net/wireless/intel/iwlegacy/3945-mac.c
+++ b/drivers/net/wireless/intel/iwlegacy/3945-mac.c
@@ -3827,7 +3827,6 @@ il3945_pci_remove(struct pci_dev *pdev)
il3945_unset_hw_params(il);

/*netif_stop_queue(dev); */
- flush_workqueue(il->workqueue);

/* ieee80211_unregister_hw calls il3945_mac_stop, which flushes
* il->workqueue... so we can't take down the workqueue
diff --git a/drivers/net/wireless/intel/iwlegacy/4965-mac.c b/drivers/net/wireless/intel/iwlegacy/4965-mac.c
index ff04282e3db03..ceab7704897de 100644
--- a/drivers/net/wireless/intel/iwlegacy/4965-mac.c
+++ b/drivers/net/wireless/intel/iwlegacy/4965-mac.c
@@ -6739,7 +6739,6 @@ il4965_pci_remove(struct pci_dev *pdev)
il_eeprom_free(il);

/*netif_stop_queue(dev); */
- flush_workqueue(il->workqueue);

/* ieee80211_unregister_hw calls il_mac_stop, which flushes
* il->workqueue... so we can't take down the workqueue
diff --git a/drivers/net/wireless/intel/iwlwifi/dvm/main.c b/drivers/net/wireless/intel/iwlwifi/dvm/main.c
index cc7b69fd14d37..69d1aae96bbb4 100644
--- a/drivers/net/wireless/intel/iwlwifi/dvm/main.c
+++ b/drivers/net/wireless/intel/iwlwifi/dvm/main.c
@@ -1525,7 +1525,6 @@ static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
kfree(priv->nvm_data);

/*netif_stop_queue(dev); */
- flush_workqueue(priv->workqueue);

/* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
* priv->workqueue... so we can't take down the workqueue
diff --git a/drivers/net/wireless/marvell/mwifiex/cfg80211.c b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
index 109b1bef4c707..017d9e03d652d 100644
--- a/drivers/net/wireless/marvell/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
@@ -3169,13 +3169,11 @@ int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct wireless_dev *wdev)
cfg80211_unregister_netdevice(wdev->netdev);

if (priv->dfs_cac_workqueue) {
- flush_workqueue(priv->dfs_cac_workqueue);
destroy_workqueue(priv->dfs_cac_workqueue);
priv->dfs_cac_workqueue = NULL;
}

if (priv->dfs_chan_sw_workqueue) {
- flush_workqueue(priv->dfs_chan_sw_workqueue);
destroy_workqueue(priv->dfs_chan_sw_workqueue);
priv->dfs_chan_sw_workqueue = NULL;
}
diff --git a/drivers/net/wireless/marvell/mwifiex/main.c b/drivers/net/wireless/marvell/mwifiex/main.c
index 17399d4aa1290..7943fd3b3058d 100644
--- a/drivers/net/wireless/marvell/mwifiex/main.c
+++ b/drivers/net/wireless/marvell/mwifiex/main.c
@@ -498,13 +498,11 @@ static void mwifiex_free_adapter(struct mwifiex_adapter *adapter)
static void mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter)
{
if (adapter->workqueue) {
- flush_workqueue(adapter->workqueue);
destroy_workqueue(adapter->workqueue);
adapter->workqueue = NULL;
}

if (adapter->rx_workqueue) {
- flush_workqueue(adapter->rx_workqueue);
destroy_workqueue(adapter->rx_workqueue);
adapter->rx_workqueue = NULL;
}
diff --git a/drivers/net/wireless/microchip/wilc1000/netdev.c b/drivers/net/wireless/microchip/wilc1000/netdev.c
index 5e3ec20e24dad..dc91739eff8c6 100644
--- a/drivers/net/wireless/microchip/wilc1000/netdev.c
+++ b/drivers/net/wireless/microchip/wilc1000/netdev.c
@@ -881,7 +881,6 @@ void wilc_netdev_cleanup(struct wilc *wilc)
srcu_read_unlock(&wilc->srcu, srcu_idx);

wilc_wfi_deinit_mon_interface(wilc, false);
- flush_workqueue(wilc->hif_workqueue);
destroy_workqueue(wilc->hif_workqueue);

while (ifc_cnt < WILC_NUM_CONCURRENT_IFC) {
diff --git a/drivers/net/wireless/quantenna/qtnfmac/core.c b/drivers/net/wireless/quantenna/qtnfmac/core.c
index b4dd60b2ebc90..01725237836e8 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/core.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/core.c
@@ -811,13 +811,11 @@ void qtnf_core_detach(struct qtnf_bus *bus)
bus->fw_state = QTNF_FW_STATE_DETACHED;

if (bus->workqueue) {
- flush_workqueue(bus->workqueue);
destroy_workqueue(bus->workqueue);
bus->workqueue = NULL;
}

if (bus->hprio_workqueue) {
- flush_workqueue(bus->hprio_workqueue);
destroy_workqueue(bus->hprio_workqueue);
bus->hprio_workqueue = NULL;
}
diff --git a/drivers/net/wireless/quantenna/qtnfmac/pcie/pcie.c b/drivers/net/wireless/quantenna/qtnfmac/pcie/pcie.c
index 5d93c874d6669..9ad4c120fa287 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/pcie/pcie.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/pcie/pcie.c
@@ -387,7 +387,6 @@ static int qtnf_pcie_probe(struct pci_dev *pdev, const struct pci_device_id *id)
return 0;

error:
- flush_workqueue(pcie_priv->workqueue);
destroy_workqueue(pcie_priv->workqueue);
pci_set_drvdata(pdev, NULL);
return ret;
@@ -416,7 +415,6 @@ static void qtnf_pcie_remove(struct pci_dev *dev)
qtnf_core_detach(bus);

netif_napi_del(&bus->mux_napi);
- flush_workqueue(priv->workqueue);
destroy_workqueue(priv->workqueue);
tasklet_kill(&priv->reclaim_tq);

diff --git a/drivers/net/wireless/realtek/rtlwifi/pci.c b/drivers/net/wireless/realtek/rtlwifi/pci.c
index 679ae786cf450..6d9f2a6233a21 100644
--- a/drivers/net/wireless/realtek/rtlwifi/pci.c
+++ b/drivers/net/wireless/realtek/rtlwifi/pci.c
@@ -1704,7 +1704,6 @@ static void rtl_pci_deinit(struct ieee80211_hw *hw)
tasklet_kill(&rtlpriv->works.irq_tasklet);
cancel_work_sync(&rtlpriv->works.lps_change_work);

- flush_workqueue(rtlpriv->works.rtl_wq);
destroy_workqueue(rtlpriv->works.rtl_wq);
}

diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c
index 70841d131d724..c35e9f5c2897e 100644
--- a/drivers/net/wireless/rndis_wlan.c
+++ b/drivers/net/wireless/rndis_wlan.c
@@ -3494,7 +3494,6 @@ static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
cancel_delayed_work_sync(&priv->dev_poller_work);
cancel_delayed_work_sync(&priv->scan_work);
cancel_work_sync(&priv->work);
- flush_workqueue(priv->workqueue);
destroy_workqueue(priv->workqueue);

wiphy_free(wiphy);
@@ -3511,7 +3510,6 @@ static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
cancel_delayed_work_sync(&priv->dev_poller_work);
cancel_delayed_work_sync(&priv->scan_work);
cancel_work_sync(&priv->work);
- flush_workqueue(priv->workqueue);
destroy_workqueue(priv->workqueue);

rndis_unbind(usbdev, intf);
diff --git a/drivers/net/wireless/st/cw1200/bh.c b/drivers/net/wireless/st/cw1200/bh.c
index 8bade5d89f12f..10e019cddcc65 100644
--- a/drivers/net/wireless/st/cw1200/bh.c
+++ b/drivers/net/wireless/st/cw1200/bh.c
@@ -85,8 +85,6 @@ void cw1200_unregister_bh(struct cw1200_common *priv)
atomic_inc(&priv->bh_term);
wake_up(&priv->bh_wq);

- flush_workqueue(priv->bh_workqueue);
-
destroy_workqueue(priv->bh_workqueue);
priv->bh_workqueue = NULL;

--
2.43.0