Local bus and USB drivers will need to do locking differently.
The original orinoco_usb patches had a boolean variable controlling
whether spin_lock_bh was used, or irq based locking. This version
provides wrappers for the lock functions and the drivers specify the
functions pointers needed.
This will introduce a performance penalty, but I'm not expecting it to
be noticable.
Signed-off-by: David Kilroy <kilroyd@xxxxxxxxxxxxxx>
---
drivers/net/wireless/orinoco/hermes.c | 26 +++++++++++++++++++++++++-
drivers/net/wireless/orinoco/hermes.h | 4 ++++
drivers/net/wireless/orinoco/main.c | 12 ++++++------
drivers/net/wireless/orinoco/orinoco.h | 16 +++++++++++++---
4 files changed, 48 insertions(+), 10 deletions(-)
diff --git a/drivers/net/wireless/orinoco/hermes.c b/drivers/net/wireless/orinoco/hermes.c
index a7df524..6448366 100644
--- a/drivers/net/wireless/orinoco/hermes.c
+++ b/drivers/net/wireless/orinoco/hermes.c
@@ -529,6 +529,26 @@ static int hermes_write_ltv(hermes_t *hw, int bap, u16 rid,
return err;
}
+void hermes_lock_irqsave(spinlock_t *lock, unsigned long *flags)
+{
+ spin_lock_irqsave(lock, *flags);
+}
+
+void hermes_unlock_irqrestore(spinlock_t *lock, unsigned long *flags)
+{
+ spin_unlock_irqrestore(lock, *flags);
+}
+
+void hermes_lock_irq(spinlock_t *lock)
+{
+ spin_lock_irq(lock);
+}
+
+void hermes_unlock_irq(spinlock_t *lock)
+{
+ spin_unlock_irq(lock);
+}
+
/* Hermes operations for local buses */
static const struct hermes_ops hermes_ops_local = {
.init = hermes_init,
@@ -538,5 +558,9 @@ static const struct hermes_ops hermes_ops_local = {
.read_ltv = hermes_read_ltv,
.write_ltv = hermes_write_ltv,
.bap_pread = hermes_bap_pread,
- .bap_pwrite = hermes_bap_pwrite
+ .bap_pwrite = hermes_bap_pwrite,
+ .lock_irqsave = hermes_lock_irqsave,
+ .unlock_irqrestore = hermes_unlock_irqrestore,
+ .lock_irq = hermes_lock_irq,
+ .unlock_irq = hermes_unlock_irq,
};
diff --git a/drivers/net/wireless/orinoco/hermes.h b/drivers/net/wireless/orinoco/hermes.h
index 18b268c..9e21ecd 100644
--- a/drivers/net/wireless/orinoco/hermes.h
+++ b/drivers/net/wireless/orinoco/hermes.h
@@ -393,6 +393,10 @@ struct hermes_ops {
u16 id, u16 offset);
int (*bap_pwrite)(struct hermes *hw, int bap, const void *buf,
int len, u16 id, u16 offset);
+ void (*lock_irqsave)(spinlock_t *lock, unsigned long *flags);
+ void (*unlock_irqrestore)(spinlock_t *lock, unsigned long *flags);
+ void (*lock_irq)(spinlock_t *lock);
+ void (*unlock_irq)(spinlock_t *lock);
};
/* Basic control structure */
diff --git a/drivers/net/wireless/orinoco/main.c b/drivers/net/wireless/orinoco/main.c
index 9dc458d..9485da2 100644
--- a/drivers/net/wireless/orinoco/main.c
+++ b/drivers/net/wireless/orinoco/main.c
@@ -282,13 +282,13 @@ int orinoco_stop(struct net_device *dev)
/* We mustn't use orinoco_lock() here, because we need to be
able to close the interface even if hw_unavailable is set
(e.g. as we're released after a PC Card removal) */
- spin_lock_irq(&priv->lock);
+ orinoco_lock_irq(priv);
priv->open = 0;
err = __orinoco_down(priv);
- spin_unlock_irq(&priv->lock);
+ orinoco_unlock_irq(priv);
return err;
}
@@ -1742,7 +1742,7 @@ void orinoco_reset(struct work_struct *work)
}
/* This has to be called from user context */
- spin_lock_irq(&priv->lock);
+ orinoco_lock_irq(priv);
priv->hw_unavailable--;
@@ -1757,7 +1757,7 @@ void orinoco_reset(struct work_struct *work)
dev->trans_start = jiffies;
}
- spin_unlock_irq(&priv->lock);
+ orinoco_unlock_irq(priv);
return;
disable:
@@ -2074,9 +2074,9 @@ int orinoco_init(struct orinoco_private *priv)
/* Make the hardware available, as long as it hasn't been
* removed elsewhere (e.g. by PCMCIA hot unplug) */
- spin_lock_irq(&priv->lock);
+ orinoco_lock_irq(priv);
priv->hw_unavailable--;
- spin_unlock_irq(&priv->lock);
+ orinoco_unlock_irq(priv);
dev_dbg(dev, "Ready\n");
diff --git a/drivers/net/wireless/orinoco/orinoco.h b/drivers/net/wireless/orinoco/orinoco.h
index f1901d6..80a1386 100644
--- a/drivers/net/wireless/orinoco/orinoco.h
+++ b/drivers/net/wireless/orinoco/orinoco.h
@@ -212,11 +212,11 @@ void orinoco_tx_timeout(struct net_device *dev);
static inline int orinoco_lock(struct orinoco_private *priv,
unsigned long *flags)
{
- spin_lock_irqsave(&priv->lock, *flags);
+ priv->hw.ops->lock_irqsave(&priv->lock, flags);
if (priv->hw_unavailable) {
DEBUG(1, "orinoco_lock() called with hw_unavailable (dev=%p)\n",
priv->ndev);
- spin_unlock_irqrestore(&priv->lock, *flags);
+ priv->hw.ops->unlock_irqrestore(&priv->lock, flags);
return -EBUSY;
}
return 0;
@@ -225,7 +225,17 @@ static inline int orinoco_lock(struct orinoco_private *priv,
static inline void orinoco_unlock(struct orinoco_private *priv,
unsigned long *flags)
{
- spin_unlock_irqrestore(&priv->lock, *flags);
+ priv->hw.ops->unlock_irqrestore(&priv->lock, flags);
+}
+
+static inline void orinoco_lock_irq(struct orinoco_private *priv)
+{
+ priv->hw.ops->lock_irq(&priv->lock);
+}
+
+static inline void orinoco_unlock_irq(struct orinoco_private *priv)
+{
+ priv->hw.ops->unlock_irq(&priv->lock);
}
/*** Navigate from net_device to orinoco_private ***/
--
1.6.4.4
--
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