From 3e9191fce2d6b36a429dc046cdc1f7e8ec70465c Mon Sep 17 00:00:00 2001 From: Vladimir Kondratiev Date: Thu, 30 Jul 2015 13:51:53 +0300 Subject: [PATCH] wil6210: wait for del_station to complete Multiple del_station requests may be sent to the driver by the supplicant when turning down AP. This may overflow mailbox between the FW and ucode Wait till disconnect of one STA completed before sending next command. Signed-off-by: Vladimir Kondratiev Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/wil6210/wmi.c | 29 +++++++++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/wil6210/wmi.c b/drivers/net/wireless/ath/wil6210/wmi.c index c759759afbb2..362ce7a257e8 100644 --- a/drivers/net/wireless/ath/wil6210/wmi.c +++ b/drivers/net/wireless/ath/wil6210/wmi.c @@ -1129,15 +1129,42 @@ int wmi_get_temperature(struct wil6210_priv *wil, u32 *t_bb, u32 *t_rf) int wmi_disconnect_sta(struct wil6210_priv *wil, const u8 *mac, u16 reason) { + int rc; + u16 reason_code; struct wmi_disconnect_sta_cmd cmd = { .disconnect_reason = cpu_to_le16(reason), }; + struct { + struct wil6210_mbox_hdr_wmi wmi; + struct wmi_disconnect_event evt; + } __packed reply; ether_addr_copy(cmd.dst_mac, mac); wil_dbg_wmi(wil, "%s(%pM, reason %d)\n", __func__, mac, reason); - return wmi_send(wil, WMI_DISCONNECT_STA_CMDID, &cmd, sizeof(cmd)); + rc = wmi_call(wil, WMI_DISCONNECT_STA_CMDID, &cmd, sizeof(cmd), + WMI_DISCONNECT_EVENTID, &reply, sizeof(reply), 1000); + /* failure to disconnect in reasonable time treated as FW error */ + if (rc) { + wil_fw_error_recovery(wil); + return rc; + } + + /* call event handler manually after processing wmi_call, + * to avoid deadlock - disconnect event handler acquires wil->mutex + * while it is already held here + */ + reason_code = le16_to_cpu(reply.evt.protocol_reason_status); + + wil_dbg_wmi(wil, "Disconnect %pM reason [proto %d wmi %d]\n", + reply.evt.bssid, reason_code, + reply.evt.disconnect_reason); + + wil->sinfo_gen++; + wil6210_disconnect(wil, reply.evt.bssid, reason_code, true); + + return 0; } int wmi_addba(struct wil6210_priv *wil, u8 ringid, u8 size, u16 timeout) -- 2.39.5