From: Gertjan van Wingerde <gwingerde@xxxxxxxxx>
The queue index locks are no longer used in interrupt context due to the
introduction of tasklets and workqueues. Therefore we can use a lighter
variant of the spinlocks.
Signed-off-by: Gertjan van Wingerde <gwingerde@xxxxxxxxx>
Signed-off-by: Ivo van Doorn <IvDoorn@xxxxxxxxx>
---
drivers/net/wireless/rt2x00/rt2x00debug.c | 5 ++---
drivers/net/wireless/rt2x00/rt2x00queue.c | 20 ++++++++------------
2 files changed, 10 insertions(+), 15 deletions(-)
diff --git a/drivers/net/wireless/rt2x00/rt2x00debug.c b/drivers/net/wireless/rt2x00/rt2x00debug.c
index 78787fc..8e417de 100644
--- a/drivers/net/wireless/rt2x00/rt2x00debug.c
+++ b/drivers/net/wireless/rt2x00/rt2x00debug.c
@@ -327,7 +327,6 @@ static ssize_t rt2x00debug_read_queue_stats(struct file *file,
{
struct rt2x00debug_intf *intf = file->private_data;
struct data_queue *queue;
- unsigned long irqflags;
unsigned int lines = 1 + intf->rt2x00dev->data_queues;
size_t size;
char *data;
@@ -344,7 +343,7 @@ static ssize_t rt2x00debug_read_queue_stats(struct file *file,
sprintf(data, "qid\tflags\t\tcount\tlimit\tlength\tindex\tdma done\tdone\n");
queue_for_each(intf->rt2x00dev, queue) {
- spin_lock_irqsave(&queue->index_lock, irqflags);
+ spin_lock_bh(&queue->index_lock);
temp += sprintf(temp, "%d\t0x%.8x\t%d\t%d\t%d\t%d\t%d\t\t%d\n",
queue->qid, (unsigned int)queue->flags,
@@ -353,7 +352,7 @@ static ssize_t rt2x00debug_read_queue_stats(struct file *file,
queue->index[Q_INDEX_DMA_DONE],
queue->index[Q_INDEX_DONE]);
- spin_unlock_irqrestore(&queue->index_lock, irqflags);
+ spin_unlock_bh(&queue->index_lock);
}
size = strlen(data);
diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c
index f1e1381..e2e1bf6 100644
--- a/drivers/net/wireless/rt2x00/rt2x00queue.c
+++ b/drivers/net/wireless/rt2x00/rt2x00queue.c
@@ -735,7 +735,6 @@ bool rt2x00queue_for_each_entry(struct data_queue *queue,
bool (*fn)(struct queue_entry *entry,
void *data))
{
- unsigned long irqflags;
unsigned int index_start;
unsigned int index_end;
unsigned int i;
@@ -753,10 +752,10 @@ bool rt2x00queue_for_each_entry(struct data_queue *queue,
* it should not be kicked during this run, since it
* is part of another TX operation.
*/
- spin_lock_irqsave(&queue->index_lock, irqflags);
+ spin_lock_bh(&queue->index_lock);
index_start = queue->index[start];
index_end = queue->index[end];
- spin_unlock_irqrestore(&queue->index_lock, irqflags);
+ spin_unlock_bh(&queue->index_lock);
/*
* Start from the TX done pointer, this guarentees that we will
@@ -787,7 +786,6 @@ struct queue_entry *rt2x00queue_get_entry(struct data_queue *queue,
enum queue_index index)
{
struct queue_entry *entry;
- unsigned long irqflags;
if (unlikely(index >= Q_INDEX_MAX)) {
ERROR(queue->rt2x00dev,
@@ -795,11 +793,11 @@ struct queue_entry *rt2x00queue_get_entry(struct data_queue *queue,
return NULL;
}
- spin_lock_irqsave(&queue->index_lock, irqflags);
+ spin_lock_bh(&queue->index_lock);
entry = &queue->entries[queue->index[index]];
- spin_unlock_irqrestore(&queue->index_lock, irqflags);
+ spin_unlock_bh(&queue->index_lock);
return entry;
}
@@ -808,7 +806,6 @@ EXPORT_SYMBOL_GPL(rt2x00queue_get_entry);
void rt2x00queue_index_inc(struct queue_entry *entry, enum queue_index index)
{
struct data_queue *queue = entry->queue;
- unsigned long irqflags;
if (unlikely(index >= Q_INDEX_MAX)) {
ERROR(queue->rt2x00dev,
@@ -816,7 +813,7 @@ void rt2x00queue_index_inc(struct queue_entry *entry, enum queue_index index)
return;
}
- spin_lock_irqsave(&queue->index_lock, irqflags);
+ spin_lock_bh(&queue->index_lock);
queue->index[index]++;
if (queue->index[index] >= queue->limit)
@@ -831,7 +828,7 @@ void rt2x00queue_index_inc(struct queue_entry *entry, enum queue_index index)
queue->count++;
}
- spin_unlock_irqrestore(&queue->index_lock, irqflags);
+ spin_unlock_bh(&queue->index_lock);
}
void rt2x00queue_pause_queue(struct data_queue *queue)
@@ -1031,10 +1028,9 @@ EXPORT_SYMBOL_GPL(rt2x00queue_flush_queues);
static void rt2x00queue_reset(struct data_queue *queue)
{
- unsigned long irqflags;
unsigned int i;
- spin_lock_irqsave(&queue->index_lock, irqflags);
+ spin_lock_bh(&queue->index_lock);
queue->count = 0;
queue->length = 0;
@@ -1042,7 +1038,7 @@ static void rt2x00queue_reset(struct data_queue *queue)
for (i = 0; i < Q_INDEX_MAX; i++)
queue->index[i] = 0;
- spin_unlock_irqrestore(&queue->index_lock, irqflags);
+ spin_unlock_bh(&queue->index_lock);
}
void rt2x00queue_init_queues(struct rt2x00_dev *rt2x00dev)
--
1.7.2.3
--
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