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mwifiex: remove global variable cmd_wait_q_required

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There is a race condition while queuing synchronous command and
asynchronous command requested from different threads, because
the wait_q_enabled flag is set based on a global variable
cmd_wait_q_required.

The issue is fixed by removing this global variable and using a
unified function with an argument 'sync' passed into the
function.

Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Bing Zhao
2014-02-27 19:35:12 -08:00
committed by John W. Linville
parent 6b7dce12b3
commit fa0ecbb990
18 changed files with 255 additions and 298 deletions
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5
drivers/net/wireless/mwifiex/main.c
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@@ -678,8 +678,8 @@ mwifiex_set_mac_address(struct net_device *dev, void *addr)
memcpy(priv->curr_addr, hw_addr->sa_data, ETH_ALEN);
/* Send request to firmware */
ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_MAC_ADDRESS,
HostCmd_ACT_GEN_SET, 0, NULL);
ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_MAC_ADDRESS,
HostCmd_ACT_GEN_SET, 0, NULL, true);
if (!ret)
memcpy(priv->netdev->dev_addr, priv->curr_addr, ETH_ALEN);
@@ -871,7 +871,6 @@ mwifiex_add_card(void *card, struct semaphore *sem,
adapter->is_suspended = false;
adapter->hs_activated = false;
init_waitqueue_head(&adapter->hs_activate_wait_q);
adapter->cmd_wait_q_required = false;
init_waitqueue_head(&adapter->cmd_wait_q.wait);
adapter->cmd_wait_q.status = 0;
adapter->scan_wait_q_woken = false;