The semaphore stats_sem is used as mutex, convert it to the mutex API
Signed-off-by: Matthias Kaehlcke <matthias@xxxxxxxxxxxx>
Index: linux-2.6/drivers/net/wireless/prism54/isl_ioctl.c
===================================================================
--- linux-2.6.orig/drivers/net/wireless/prism54/isl_ioctl.c 2008-02-15 20:43:05.000000000 +0100
+++ linux-2.6/drivers/net/wireless/prism54/isl_ioctl.c 2008-02-15 20:44:03.000000000 +0100
@@ -165,7 +165,7 @@
struct obj_bss bss, *bss2;
union oid_res_t r;
- down(&priv->stats_sem);
+ mutex_lock(&priv->stats_lock);
/* Noise floor.
* I'm not sure if the unit is dBm.
@@ -207,7 +207,7 @@
mgt_get_request(priv, DOT11_OID_MPDUTXFAILED, 0, NULL, &r);
priv->local_iwstatistics.discard.retries = r.u;
- up(&priv->stats_sem);
+ mutex_unlock(&priv->stats_lock);
return;
}
@@ -218,12 +218,12 @@
islpci_private *priv = netdev_priv(ndev);
/* If the stats are being updated return old data */
- if (down_trylock(&priv->stats_sem) == 0) {
+ if (mutex_trylock(&priv->stats_lock) == 0) {
memcpy(&priv->iwstatistics, &priv->local_iwstatistics,
sizeof (struct iw_statistics));
/* They won't be marked updated for the next time */
priv->local_iwstatistics.qual.updated = 0;
- up(&priv->stats_sem);
+ mutex_unlock(&priv->stats_lock);
} else
priv->iwstatistics.qual.updated = 0;
Index: linux-2.6/drivers/net/wireless/prism54/islpci_dev.c
===================================================================
--- linux-2.6.orig/drivers/net/wireless/prism54/islpci_dev.c 2008-02-15 20:42:15.000000000 +0100
+++ linux-2.6/drivers/net/wireless/prism54/islpci_dev.c 2008-02-15 20:44:03.000000000 +0100
@@ -864,7 +864,7 @@
mutex_init(&priv->mgmt_lock);
priv->mgmt_received = NULL;
init_waitqueue_head(&priv->mgmt_wqueue);
- sema_init(&priv->stats_sem, 1);
+ mutex_init(&priv->stats_lock);
spin_lock_init(&priv->slock);
/* init state machine with off#1 state */
Index: linux-2.6/drivers/net/wireless/prism54/islpci_dev.h
===================================================================
--- linux-2.6.orig/drivers/net/wireless/prism54/islpci_dev.h 2008-02-15 20:43:49.000000000 +0100
+++ linux-2.6/drivers/net/wireless/prism54/islpci_dev.h 2008-02-15 20:44:03.000000000 +0100
@@ -88,7 +88,7 @@
/* Take care of the wireless stats */
struct work_struct stats_work;
- struct semaphore stats_sem;
+ struct mutex stats_lock;
/* remember when we last updated the stats */
unsigned long stats_timestamp;
/* The first is accessed under semaphore locking.
--
Matthias Kaehlcke
Linux System Developer
Barcelona
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(Isaac Newton)
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