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Date: Tue, 21 Jun 2016 20:45:39 +0900
From: Chaehyun Lim <chaehyun.lim@...il.com>
To: kvalo@....qualcomm.com
Cc: ath10k@...ts.infradead.org, linux-wireless@...r.kernel.org,
netdev@...r.kernel.org, Chaehyun Lim <chaehyun.lim@...il.com>
Subject: [PATCH 2/2] ath6kl: replace semaphore with mutex
It replaces struct semaphore sem with struct mutex mutex
Signed-off-by: Chaehyun Lim <chaehyun.lim@...il.com>
---
drivers/net/wireless/ath/ath6kl/cfg80211.c | 30 +++++++++++++++---------------
drivers/net/wireless/ath/ath6kl/core.c | 2 +-
drivers/net/wireless/ath/ath6kl/core.h | 2 +-
drivers/net/wireless/ath/ath6kl/debug.c | 12 ++++++------
drivers/net/wireless/ath/ath6kl/init.c | 6 +++---
5 files changed, 26 insertions(+), 26 deletions(-)
diff --git a/drivers/net/wireless/ath/ath6kl/cfg80211.c b/drivers/net/wireless/ath/ath6kl/cfg80211.c
index f6b5390..d4eb066 100644
--- a/drivers/net/wireless/ath/ath6kl/cfg80211.c
+++ b/drivers/net/wireless/ath/ath6kl/cfg80211.c
@@ -480,14 +480,14 @@ static int ath6kl_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
return -EINVAL;
}
- if (down_interruptible(&ar->sem)) {
+ if (mutex_lock_interruptible(&ar->mutex)) {
ath6kl_err("busy, couldn't get access\n");
return -ERESTARTSYS;
}
if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
ath6kl_err("busy, destroy in progress\n");
- up(&ar->sem);
+ mutex_unlock(&ar->mutex);
return -EBUSY;
}
@@ -500,14 +500,14 @@ static int ath6kl_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
WMI_TIMEOUT);
if (signal_pending(current)) {
ath6kl_err("cmd queue drain timeout\n");
- up(&ar->sem);
+ mutex_unlock(&ar->mutex);
return -EINTR;
}
}
status = ath6kl_set_assoc_req_ies(vif, sme->ie, sme->ie_len);
if (status) {
- up(&ar->sem);
+ mutex_unlock(&ar->mutex);
return status;
}
@@ -522,7 +522,7 @@ static int ath6kl_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
vif->req_bssid,
vif->ch_hint);
- up(&ar->sem);
+ mutex_unlock(&ar->mutex);
if (status) {
ath6kl_err("wmi_reconnect_cmd failed\n");
return -EIO;
@@ -548,7 +548,7 @@ static int ath6kl_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
status = ath6kl_set_auth_type(vif, sme->auth_type);
if (status) {
- up(&ar->sem);
+ mutex_unlock(&ar->mutex);
return status;
}
@@ -570,7 +570,7 @@ static int ath6kl_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
if (sme->key_idx > WMI_MAX_KEY_INDEX) {
ath6kl_err("key index %d out of bounds\n",
sme->key_idx);
- up(&ar->sem);
+ mutex_unlock(&ar->mutex);
return -ENOENT;
}
@@ -594,7 +594,7 @@ static int ath6kl_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
if (ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
ALL_BSS_FILTER, 0) != 0) {
ath6kl_err("couldn't set bss filtering\n");
- up(&ar->sem);
+ mutex_unlock(&ar->mutex);
return -EIO;
}
}
@@ -626,7 +626,7 @@ static int ath6kl_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
0);
if (status) {
ath6kl_err("couldn't set listen intervel\n");
- up(&ar->sem);
+ mutex_unlock(&ar->mutex);
return status;
}
}
@@ -651,7 +651,7 @@ static int ath6kl_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 0, 0,
sme->bg_scan_period, 0, 0, 0, 3, 0, 0, 0);
- up(&ar->sem);
+ mutex_unlock(&ar->mutex);
if (status == -EINVAL) {
memset(vif->ssid, 0, sizeof(vif->ssid));
@@ -832,7 +832,7 @@ static int ath6kl_cfg80211_disconnect(struct wiphy *wiphy,
return -EBUSY;
}
- if (down_interruptible(&ar->sem)) {
+ if (mutex_lock_interruptible(&ar->mutex)) {
ath6kl_err("busy, couldn't get access\n");
return -ERESTARTSYS;
}
@@ -845,7 +845,7 @@ static int ath6kl_cfg80211_disconnect(struct wiphy *wiphy,
if (!test_bit(SKIP_SCAN, &ar->flag))
memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
- up(&ar->sem);
+ mutex_unlock(&ar->mutex);
vif->sme_state = SME_DISCONNECTED;
@@ -1775,7 +1775,7 @@ static int ath6kl_get_station(struct wiphy *wiphy, struct net_device *dev,
if (memcmp(mac, vif->bssid, ETH_ALEN) != 0)
return -ENOENT;
- if (down_interruptible(&ar->sem))
+ if (mutex_lock_interruptible(&ar->mutex))
return -EBUSY;
set_bit(STATS_UPDATE_PEND, &vif->flags);
@@ -1783,7 +1783,7 @@ static int ath6kl_get_station(struct wiphy *wiphy, struct net_device *dev,
ret = ath6kl_wmi_get_stats_cmd(ar->wmi, vif->fw_vif_idx);
if (ret != 0) {
- up(&ar->sem);
+ mutex_unlock(&ar->mutex);
return -EIO;
}
@@ -1792,7 +1792,7 @@ static int ath6kl_get_station(struct wiphy *wiphy, struct net_device *dev,
&vif->flags),
WMI_TIMEOUT);
- up(&ar->sem);
+ mutex_unlock(&ar->mutex);
if (left == 0)
return -ETIMEDOUT;
diff --git a/drivers/net/wireless/ath/ath6kl/core.c b/drivers/net/wireless/ath/ath6kl/core.c
index ebb9f16..0da253a 100644
--- a/drivers/net/wireless/ath/ath6kl/core.c
+++ b/drivers/net/wireless/ath/ath6kl/core.c
@@ -283,7 +283,7 @@ struct ath6kl *ath6kl_core_create(struct device *dev)
spin_lock_init(&ar->list_lock);
init_waitqueue_head(&ar->event_wq);
- sema_init(&ar->sem, 1);
+ mutex_init(&ar->mutex);
INIT_LIST_HEAD(&ar->amsdu_rx_buffer_queue);
INIT_LIST_HEAD(&ar->vif_list);
diff --git a/drivers/net/wireless/ath/ath6kl/core.h b/drivers/net/wireless/ath/ath6kl/core.h
index ac25f17..42848bd 100644
--- a/drivers/net/wireless/ath/ath6kl/core.h
+++ b/drivers/net/wireless/ath/ath6kl/core.h
@@ -722,7 +722,7 @@ struct ath6kl {
*/
spinlock_t lock;
- struct semaphore sem;
+ struct mutex mutex;
u8 lrssi_roam_threshold;
struct ath6kl_version version;
u32 target_type;
diff --git a/drivers/net/wireless/ath/ath6kl/debug.c b/drivers/net/wireless/ath/ath6kl/debug.c
index e2b7809..9c1e709 100644
--- a/drivers/net/wireless/ath/ath6kl/debug.c
+++ b/drivers/net/wireless/ath/ath6kl/debug.c
@@ -102,13 +102,13 @@ int ath6kl_read_tgt_stats(struct ath6kl *ar, struct ath6kl_vif *vif)
{
long left;
- if (down_interruptible(&ar->sem))
+ if (mutex_lock_interruptible(&ar->mutex))
return -EBUSY;
set_bit(STATS_UPDATE_PEND, &vif->flags);
if (ath6kl_wmi_get_stats_cmd(ar->wmi, 0)) {
- up(&ar->sem);
+ mutex_unlock(&ar->mutex);
return -EIO;
}
@@ -116,7 +116,7 @@ int ath6kl_read_tgt_stats(struct ath6kl *ar, struct ath6kl_vif *vif)
!test_bit(STATS_UPDATE_PEND,
&vif->flags), WMI_TIMEOUT);
- up(&ar->sem);
+ mutex_unlock(&ar->mutex);
if (left <= 0)
return -ETIMEDOUT;
@@ -1167,20 +1167,20 @@ static ssize_t ath6kl_roam_table_read(struct file *file, char __user *user_buf,
unsigned int len, buf_len;
ssize_t ret_cnt;
- if (down_interruptible(&ar->sem))
+ if (mutex_lock_interruptible(&ar->mutex))
return -EBUSY;
set_bit(ROAM_TBL_PEND, &ar->flag);
ret = ath6kl_wmi_get_roam_tbl_cmd(ar->wmi);
if (ret) {
- up(&ar->sem);
+ mutex_unlock(&ar->sem);
return ret;
}
left = wait_event_interruptible_timeout(
ar->event_wq, !test_bit(ROAM_TBL_PEND, &ar->flag), WMI_TIMEOUT);
- up(&ar->sem);
+ mutex_unlock(&ar->mutex);
if (left <= 0)
return -ETIMEDOUT;
diff --git a/drivers/net/wireless/ath/ath6kl/init.c b/drivers/net/wireless/ath/ath6kl/init.c
index 58fb227..377f1fa 100644
--- a/drivers/net/wireless/ath/ath6kl/init.c
+++ b/drivers/net/wireless/ath/ath6kl/init.c
@@ -1890,8 +1890,8 @@ void ath6kl_stop_txrx(struct ath6kl *ar)
set_bit(DESTROY_IN_PROGRESS, &ar->flag);
- if (down_interruptible(&ar->sem)) {
- ath6kl_err("down_interruptible failed\n");
+ if (mutex_lock_interruptible(&ar->mutex)) {
+ ath6kl_err("mutex_lock_interruptible failed\n");
return;
}
@@ -1938,6 +1938,6 @@ void ath6kl_stop_txrx(struct ath6kl *ar)
*/
ath6kl_init_hw_reset(ar);
- up(&ar->sem);
+ mutex_unlock(&ar->mutex);
}
EXPORT_SYMBOL(ath6kl_stop_txrx);
--
2.9.0
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