From 7cc23016366e183dcaf23afa4a0dca61ff7f787a Mon Sep 17 00:00:00 2001 From: Michal Kazior Date: Fri, 13 Sep 2013 14:16:57 +0200 Subject: [PATCH] ath10k: remove wmi pending count limit It is no longer used nor necessary since WMI commands can block. Signed-off-by: Michal Kazior Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/core.h | 2 -- drivers/net/wireless/ath/ath10k/mac.c | 9 -------- drivers/net/wireless/ath/ath10k/wmi.c | 32 -------------------------- drivers/net/wireless/ath/ath10k/wmi.h | 2 -- 4 files changed, 45 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h index 14b7d3de6883..c2b6a766dabd 100644 --- a/drivers/net/wireless/ath/ath10k/core.h +++ b/drivers/net/wireless/ath/ath10k/core.h @@ -112,8 +112,6 @@ struct ath10k_wmi { enum ath10k_htc_ep_id eid; struct completion service_ready; struct completion unified_ready; - atomic_t pending_tx_count; - wait_queue_head_t wq; wait_queue_head_t tx_credits_wq; struct sk_buff_head wmi_event_list; diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index 6c3e9d1f80d9..11aa13e7587f 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -1224,8 +1224,6 @@ static void ath10k_bss_disassoc(struct ieee80211_hw *hw, /* FIXME: why don't we print error if wmi call fails? */ ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id); - ath10k_wmi_flush_tx(ar); - arvif->def_wep_key_index = 0; } @@ -1664,8 +1662,6 @@ static int ath10k_abort_scan(struct ath10k *ar) return -EIO; } - ath10k_wmi_flush_tx(ar); - ret = wait_for_completion_timeout(&ar->scan.completed, 3*HZ); if (ret == 0) ath10k_warn("timed out while waiting for scan to stop\n"); @@ -1699,10 +1695,6 @@ static int ath10k_start_scan(struct ath10k *ar, if (ret) return ret; - /* make sure we submit the command so the completion - * timeout makes sense */ - ath10k_wmi_flush_tx(ar); - ret = wait_for_completion_timeout(&ar->scan.started, 1*HZ); if (ret == 0) { ath10k_abort_scan(ar); @@ -1924,7 +1916,6 @@ static int ath10k_config(struct ieee80211_hw *hw, u32 changed) ret = ath10k_monitor_destroy(ar); } - ath10k_wmi_flush_tx(ar); mutex_unlock(&ar->conf_mutex); return ret; } diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c index 9152daea9d96..b29d2b954c0e 100644 --- a/drivers/net/wireless/ath/ath10k/wmi.c +++ b/drivers/net/wireless/ath/ath10k/wmi.c @@ -23,30 +23,6 @@ #include "wmi.h" #include "mac.h" -void ath10k_wmi_flush_tx(struct ath10k *ar) -{ - int ret; - - lockdep_assert_held(&ar->conf_mutex); - - if (ar->state == ATH10K_STATE_WEDGED) { - ath10k_warn("wmi flush skipped - device is wedged anyway\n"); - return; - } - - ret = wait_event_timeout(ar->wmi.wq, - atomic_read(&ar->wmi.pending_tx_count) == 0, - 5*HZ); - if (atomic_read(&ar->wmi.pending_tx_count) == 0) - return; - - if (ret == 0) - ret = -ETIMEDOUT; - - if (ret < 0) - ath10k_warn("wmi flush failed (%d)\n", ret); -} - int ath10k_wmi_wait_for_service_ready(struct ath10k *ar) { int ret; @@ -85,9 +61,6 @@ static struct sk_buff *ath10k_wmi_alloc_skb(u32 len) static void ath10k_wmi_htc_tx_complete(struct ath10k *ar, struct sk_buff *skb) { dev_kfree_skb(skb); - - if (atomic_sub_return(1, &ar->wmi.pending_tx_count) == 0) - wake_up(&ar->wmi.wq); } static int ath10k_wmi_cmd_send_nowait(struct ath10k *ar, struct sk_buff *skb, @@ -1243,7 +1216,6 @@ int ath10k_wmi_attach(struct ath10k *ar) { init_completion(&ar->wmi.service_ready); init_completion(&ar->wmi.unified_ready); - init_waitqueue_head(&ar->wmi.wq); init_waitqueue_head(&ar->wmi.tx_credits_wq); skb_queue_head_init(&ar->wmi.wmi_event_list); @@ -1254,10 +1226,6 @@ int ath10k_wmi_attach(struct ath10k *ar) void ath10k_wmi_detach(struct ath10k *ar) { - /* HTC should've drained the packets already */ - if (WARN_ON(atomic_read(&ar->wmi.pending_tx_count) > 0)) - ath10k_warn("there are still pending packets\n"); - cancel_work_sync(&ar->wmi.wmi_event_work); skb_queue_purge(&ar->wmi.wmi_event_list); } diff --git a/drivers/net/wireless/ath/ath10k/wmi.h b/drivers/net/wireless/ath/ath10k/wmi.h index b100431f2241..2c52c23107dd 100644 --- a/drivers/net/wireless/ath/ath10k/wmi.h +++ b/drivers/net/wireless/ath/ath10k/wmi.h @@ -3044,7 +3044,6 @@ struct wmi_force_fw_hang_cmd { #define WMI_MAX_EVENT 0x1000 /* Maximum number of pending TXed WMI packets */ -#define WMI_MAX_PENDING_TX_COUNT 128 #define WMI_SKB_HEADROOM sizeof(struct wmi_cmd_hdr) /* By default disable power save for IBSS */ @@ -3057,7 +3056,6 @@ int ath10k_wmi_attach(struct ath10k *ar); void ath10k_wmi_detach(struct ath10k *ar); int ath10k_wmi_wait_for_service_ready(struct ath10k *ar); int ath10k_wmi_wait_for_unified_ready(struct ath10k *ar); -void ath10k_wmi_flush_tx(struct ath10k *ar); int ath10k_wmi_connect_htc_service(struct ath10k *ar); int ath10k_wmi_pdev_set_channel(struct ath10k *ar, -- 2.20.1