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staging: wilc1000: Replace semaphore txq_event with completion
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The semaphore 'txq_event' is used as completion, so convert it
to a struct completion type.

Signed-off-by: Binoy Jayan <binoy.jayan@linaro.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Binoy Jayan authored and Greg Kroah-Hartman committed Jun 25, 2016
1 parent b981189 commit b27a6d5
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Showing 3 changed files with 11 additions and 8 deletions.
8 changes: 4 additions & 4 deletions drivers/staging/wilc1000/linux_wlan.c
Original file line number Diff line number Diff line change
Expand Up @@ -316,7 +316,7 @@ static int linux_wlan_txq_task(void *vp)

complete(&wl->txq_thread_started);
while (1) {
down(&wl->txq_event);
wait_for_completion(&wl->txq_event);

if (wl->close) {
complete(&wl->txq_thread_started);
Expand Down Expand Up @@ -650,7 +650,7 @@ void wilc1000_wlan_deinit(struct net_device *dev)
mutex_unlock(&wl->hif_cs);
}
if (&wl->txq_event)
up(&wl->txq_event);
wait_for_completion(&wl->txq_event);

wlan_deinitialize_threads(dev);
deinit_irq(dev);
Expand Down Expand Up @@ -681,7 +681,7 @@ static int wlan_init_locks(struct net_device *dev)
spin_lock_init(&wl->txq_spinlock);
sema_init(&wl->txq_add_to_head_cs, 1);

sema_init(&wl->txq_event, 0);
init_completion(&wl->txq_event);

sema_init(&wl->cfg_event, 0);
sema_init(&wl->sync_event, 0);
Expand Down Expand Up @@ -738,7 +738,7 @@ static void wlan_deinitialize_threads(struct net_device *dev)
wl->close = 1;

if (&wl->txq_event)
up(&wl->txq_event);
complete(&wl->txq_event);

if (wl->txq_thread) {
kthread_stop(wl->txq_thread);
Expand Down
3 changes: 2 additions & 1 deletion drivers/staging/wilc1000/wilc_wfi_netdevice.h
Original file line number Diff line number Diff line change
Expand Up @@ -42,6 +42,7 @@
#include "host_interface.h"
#include "wilc_wlan.h"
#include <linux/wireless.h>
#include <linux/completion.h>

#define FLOW_CONTROL_LOWER_THRESHOLD 128
#define FLOW_CONTROL_UPPER_THRESHOLD 256
Expand Down Expand Up @@ -178,7 +179,7 @@ struct wilc {

struct semaphore cfg_event;
struct semaphore sync_event;
struct semaphore txq_event;
struct completion txq_event;
struct completion txq_thread_started;

struct task_struct *txq_thread;
Expand Down
8 changes: 5 additions & 3 deletions drivers/staging/wilc1000/wilc_wlan.c
Original file line number Diff line number Diff line change
@@ -1,3 +1,4 @@
#include <linux/completion.h>
#include "wilc_wlan_if.h"
#include "wilc_wlan.h"
#include "wilc_wfi_netdevice.h"
Expand Down Expand Up @@ -89,7 +90,7 @@ static void wilc_wlan_txq_add_to_tail(struct net_device *dev,

spin_unlock_irqrestore(&wilc->txq_spinlock, flags);

up(&wilc->txq_event);
complete(&wilc->txq_event);
}

static int wilc_wlan_txq_add_to_head(struct wilc_vif *vif,
Expand Down Expand Up @@ -119,7 +120,7 @@ static int wilc_wlan_txq_add_to_head(struct wilc_vif *vif,

spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
up(&wilc->txq_add_to_head_cs);
up(&wilc->txq_event);
complete(&wilc->txq_event);

return 0;
}
Expand Down Expand Up @@ -287,7 +288,8 @@ static int wilc_wlan_txq_filter_dup_tcp_ack(struct net_device *dev)
spin_unlock_irqrestore(&wilc->txq_spinlock, wilc->txq_spinlock_flags);

while (dropped > 0) {
wilc_lock_timeout(wilc, &wilc->txq_event, 1);
wait_for_completion_timeout(&wilc->txq_event,
msecs_to_jiffies(1));
dropped--;
}

Expand Down

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