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Message-Id: <20170725011336.99993-2-briannorris@chromium.org>
Date: Mon, 24 Jul 2017 18:13:17 -0700
From: Brian Norris <briannorris@...omium.org>
To: Ganapathi Bhat <gbhat@...vell.com>,
Nishant Sarmukadam <nishants@...vell.com>
Cc: <linux-kernel@...r.kernel.org>,
Dmitry Torokhov <dmitry.torokhov@...il.com>,
Amitkumar Karwar <amitkarwar@...il.com>,
Kalle Valo <kvalo@...eaurora.org>,
linux-wireless@...r.kernel.org,
Brian Norris <briannorris@...omium.org>
Subject: [PATCH v2 01/20] mwifiex: reunite copy-and-pasted remove/reset code
When PCIe FLR code was added, it explicitly copy-and-pasted much of
mwifiex_remove_card() into mwifiex_shutdown_sw(). This is unnecessary,
as almost all of the code should be reused.
Let's reunite what we can for now.
The only functional changes for now:
* call netif_device_detach() in the remove() code path -- this wasn't
done before, but it really should be a no-op, when the device is
getting totally unregistered soon anyway
* call the ->down_dev() driver callback only after we've finished all
SW teardown -- this should have no significant effect, since the only
user (pcie.c) does very minimal work there, and it doesn't matter
that we reorder this
Signed-off-by: Brian Norris <briannorris@...omium.org>
---
v2: no change
---
drivers/net/wireless/marvell/mwifiex/main.c | 104 ++++++++--------------------
1 file changed, 28 insertions(+), 76 deletions(-)
diff --git a/drivers/net/wireless/marvell/mwifiex/main.c b/drivers/net/wireless/marvell/mwifiex/main.c
index f2600b827e81..8615099468da 100644
--- a/drivers/net/wireless/marvell/mwifiex/main.c
+++ b/drivers/net/wireless/marvell/mwifiex/main.c
@@ -1352,26 +1352,12 @@ static void mwifiex_main_work_queue(struct work_struct *work)
mwifiex_main_process(adapter);
}
-/*
- * This function gets called during PCIe function level reset. Required
- * code is extracted from mwifiex_remove_card()
- */
-int
-mwifiex_shutdown_sw(struct mwifiex_adapter *adapter)
+/* Common teardown code used for both device removal and reset */
+static void mwifiex_uninit_sw(struct mwifiex_adapter *adapter)
{
struct mwifiex_private *priv;
int i;
- if (!adapter)
- goto exit_return;
-
- wait_for_completion(adapter->fw_done);
- /* Caller should ensure we aren't suspending while this happens */
- reinit_completion(adapter->fw_done);
-
- priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
- mwifiex_deauthenticate(priv, NULL);
-
/* We can no longer handle interrupts once we start doing the teardown
* below.
*/
@@ -1393,12 +1379,9 @@ mwifiex_shutdown_sw(struct mwifiex_adapter *adapter)
}
mwifiex_dbg(adapter, CMD, "cmd: calling mwifiex_shutdown_drv...\n");
-
mwifiex_shutdown_drv(adapter);
- if (adapter->if_ops.down_dev)
- adapter->if_ops.down_dev(adapter);
-
mwifiex_dbg(adapter, CMD, "cmd: mwifiex_shutdown_drv done\n");
+
if (atomic_read(&adapter->rx_pending) ||
atomic_read(&adapter->tx_pending) ||
atomic_read(&adapter->cmd_pending)) {
@@ -1421,9 +1404,30 @@ mwifiex_shutdown_sw(struct mwifiex_adapter *adapter)
rtnl_unlock();
}
vfree(adapter->chan_stats);
+}
+
+/*
+ * This function gets called during PCIe function level reset.
+ */
+int mwifiex_shutdown_sw(struct mwifiex_adapter *adapter)
+{
+ struct mwifiex_private *priv;
+
+ if (!adapter)
+ return 0;
+
+ wait_for_completion(adapter->fw_done);
+ /* Caller should ensure we aren't suspending while this happens */
+ reinit_completion(adapter->fw_done);
+
+ priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
+ mwifiex_deauthenticate(priv, NULL);
+
+ mwifiex_uninit_sw(adapter);
+
+ if (adapter->if_ops.down_dev)
+ adapter->if_ops.down_dev(adapter);
- mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__);
-exit_return:
return 0;
}
EXPORT_SYMBOL_GPL(mwifiex_shutdown_sw);
@@ -1676,61 +1680,10 @@ EXPORT_SYMBOL_GPL(mwifiex_add_card);
*/
int mwifiex_remove_card(struct mwifiex_adapter *adapter)
{
- struct mwifiex_private *priv = NULL;
- int i;
-
if (!adapter)
- goto exit_remove;
-
- /* We can no longer handle interrupts once we start doing the teardown
- * below. */
- if (adapter->if_ops.disable_int)
- adapter->if_ops.disable_int(adapter);
-
- adapter->surprise_removed = true;
-
- mwifiex_terminate_workqueue(adapter);
-
- /* Stop data */
- for (i = 0; i < adapter->priv_num; i++) {
- priv = adapter->priv[i];
- if (priv && priv->netdev) {
- mwifiex_stop_net_dev_queue(priv->netdev, adapter);
- if (netif_carrier_ok(priv->netdev))
- netif_carrier_off(priv->netdev);
- }
- }
-
- mwifiex_dbg(adapter, CMD,
- "cmd: calling mwifiex_shutdown_drv...\n");
-
- mwifiex_shutdown_drv(adapter);
- mwifiex_dbg(adapter, CMD,
- "cmd: mwifiex_shutdown_drv done\n");
- if (atomic_read(&adapter->rx_pending) ||
- atomic_read(&adapter->tx_pending) ||
- atomic_read(&adapter->cmd_pending)) {
- mwifiex_dbg(adapter, ERROR,
- "rx_pending=%d, tx_pending=%d,\t"
- "cmd_pending=%d\n",
- atomic_read(&adapter->rx_pending),
- atomic_read(&adapter->tx_pending),
- atomic_read(&adapter->cmd_pending));
- }
-
- for (i = 0; i < adapter->priv_num; i++) {
- priv = adapter->priv[i];
-
- if (!priv)
- continue;
+ return 0;
- rtnl_lock();
- if (priv->netdev &&
- priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED)
- mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev);
- rtnl_unlock();
- }
- vfree(adapter->chan_stats);
+ mwifiex_uninit_sw(adapter);
wiphy_unregister(adapter->wiphy);
wiphy_free(adapter->wiphy);
@@ -1748,7 +1701,6 @@ int mwifiex_remove_card(struct mwifiex_adapter *adapter)
"info: free adapter\n");
mwifiex_free_adapter(adapter);
-exit_remove:
return 0;
}
EXPORT_SYMBOL_GPL(mwifiex_remove_card);
--
2.14.0.rc0.284.gd933b75aa4-goog
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