V4L/DVB (7121): Renames videobuf lock to vb_lock
This helps to identify where vb_lock is being used, and find missusages of the
locks.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/videobuf-core.c b/drivers/media/video/videobuf-core.c
index 80a14da..eab79ff 100644
--- a/drivers/media/video/videobuf-core.c
+++ b/drivers/media/video/videobuf-core.c
@@ -147,7 +147,7 @@
/* Having implementations for abstract methods are mandatory */
BUG_ON(!q->int_ops);
- mutex_init(&q->lock);
+ mutex_init(&q->vb_lock);
INIT_LIST_HEAD(&q->stream);
}
@@ -189,7 +189,7 @@
return 0;
}
-/* Locking: Caller holds q->lock */
+/* Locking: Caller holds q->vb_lock */
void videobuf_queue_cancel(struct videobuf_queue *q)
{
unsigned long flags = 0;
@@ -220,7 +220,7 @@
/* --------------------------------------------------------------------- */
-/* Locking: Caller holds q->lock */
+/* Locking: Caller holds q->vb_lock */
enum v4l2_field videobuf_next_field(struct videobuf_queue *q)
{
enum v4l2_field field = q->field;
@@ -239,7 +239,7 @@
return field;
}
-/* Locking: Caller holds q->lock */
+/* Locking: Caller holds q->vb_lock */
static void videobuf_status(struct videobuf_queue *q, struct v4l2_buffer *b,
struct videobuf_buffer *vb, enum v4l2_buf_type type)
{
@@ -295,7 +295,7 @@
b->sequence = vb->field_count >> 1;
}
-/* Locking: Caller holds q->lock */
+/* Locking: Caller holds q->vb_lock */
static int __videobuf_mmap_free(struct videobuf_queue *q)
{
int i;
@@ -328,13 +328,13 @@
int videobuf_mmap_free(struct videobuf_queue *q)
{
int ret;
- mutex_lock(&q->lock);
+ mutex_lock(&q->vb_lock);
ret = __videobuf_mmap_free(q);
- mutex_unlock(&q->lock);
+ mutex_unlock(&q->vb_lock);
return ret;
}
-/* Locking: Caller holds q->lock */
+/* Locking: Caller holds q->vb_lock */
static int __videobuf_mmap_setup(struct videobuf_queue *q,
unsigned int bcount, unsigned int bsize,
enum v4l2_memory memory)
@@ -384,9 +384,9 @@
enum v4l2_memory memory)
{
int ret;
- mutex_lock(&q->lock);
+ mutex_lock(&q->vb_lock);
ret = __videobuf_mmap_setup(q, bcount, bsize, memory);
- mutex_unlock(&q->lock);
+ mutex_unlock(&q->vb_lock);
return ret;
}
@@ -408,7 +408,7 @@
return -EINVAL;
}
- mutex_lock(&q->lock);
+ mutex_lock(&q->vb_lock);
if (req->type != q->type) {
dprintk(1, "reqbufs: queue type invalid\n");
retval = -EINVAL;
@@ -444,7 +444,7 @@
req->count = retval;
done:
- mutex_unlock(&q->lock);
+ mutex_unlock(&q->vb_lock);
return retval;
}
@@ -452,7 +452,7 @@
{
int ret = -EINVAL;
- mutex_lock(&q->lock);
+ mutex_lock(&q->vb_lock);
if (unlikely(b->type != q->type)) {
dprintk(1, "querybuf: Wrong type.\n");
goto done;
@@ -470,7 +470,7 @@
ret = 0;
done:
- mutex_unlock(&q->lock);
+ mutex_unlock(&q->vb_lock);
return ret;
}
@@ -487,7 +487,7 @@
if (b->memory == V4L2_MEMORY_MMAP)
down_read(¤t->mm->mmap_sem);
- mutex_lock(&q->lock);
+ mutex_lock(&q->vb_lock);
retval = -EBUSY;
if (q->reading) {
dprintk(1, "qbuf: Reading running...\n");
@@ -573,7 +573,7 @@
retval = 0;
done:
- mutex_unlock(&q->lock);
+ mutex_unlock(&q->vb_lock);
if (b->memory == V4L2_MEMORY_MMAP)
up_read(¤t->mm->mmap_sem);
@@ -589,7 +589,7 @@
MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
- mutex_lock(&q->lock);
+ mutex_lock(&q->vb_lock);
retval = -EBUSY;
if (q->reading) {
dprintk(1, "dqbuf: Reading running...\n");
@@ -632,7 +632,7 @@
videobuf_status(q, b, buf, q->type);
done:
- mutex_unlock(&q->lock);
+ mutex_unlock(&q->vb_lock);
return retval;
}
@@ -642,7 +642,7 @@
unsigned long flags = 0;
int retval;
- mutex_lock(&q->lock);
+ mutex_lock(&q->vb_lock);
retval = -EBUSY;
if (q->reading)
goto done;
@@ -659,11 +659,11 @@
spin_unlock_irqrestore(q->irqlock, flags);
done:
- mutex_unlock(&q->lock);
+ mutex_unlock(&q->vb_lock);
return retval;
}
-/* Locking: Caller holds q->lock */
+/* Locking: Caller holds q->vb_lock */
static int __videobuf_streamoff(struct videobuf_queue *q)
{
if (!q->streaming)
@@ -679,14 +679,14 @@
{
int retval;
- mutex_lock(&q->lock);
+ mutex_lock(&q->vb_lock);
retval = __videobuf_streamoff(q);
- mutex_unlock(&q->lock);
+ mutex_unlock(&q->vb_lock);
return retval;
}
-/* Locking: Caller holds q->lock */
+/* Locking: Caller holds q->vb_lock */
static ssize_t videobuf_read_zerocopy(struct videobuf_queue *q,
char __user *data,
size_t count, loff_t *ppos)
@@ -745,7 +745,7 @@
MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
- mutex_lock(&q->lock);
+ mutex_lock(&q->vb_lock);
nbufs = 1; size = 0;
q->ops->buf_setup(q, &nbufs, &size);
@@ -817,11 +817,11 @@
}
done:
- mutex_unlock(&q->lock);
+ mutex_unlock(&q->vb_lock);
return retval;
}
-/* Locking: Caller holds q->lock */
+/* Locking: Caller holds q->vb_lock */
static int __videobuf_read_start(struct videobuf_queue *q)
{
enum v4l2_field field;
@@ -882,23 +882,23 @@
{
int rc;
- mutex_lock(&q->lock);
+ mutex_lock(&q->vb_lock);
rc = __videobuf_read_start(q);
- mutex_unlock(&q->lock);
+ mutex_unlock(&q->vb_lock);
return rc;
}
void videobuf_read_stop(struct videobuf_queue *q)
{
- mutex_lock(&q->lock);
+ mutex_lock(&q->vb_lock);
__videobuf_read_stop(q);
- mutex_unlock(&q->lock);
+ mutex_unlock(&q->vb_lock);
}
void videobuf_stop(struct videobuf_queue *q)
{
- mutex_lock(&q->lock);
+ mutex_lock(&q->vb_lock);
if (q->streaming)
__videobuf_streamoff(q);
@@ -906,7 +906,7 @@
if (q->reading)
__videobuf_read_stop(q);
- mutex_unlock(&q->lock);
+ mutex_unlock(&q->vb_lock);
}
@@ -920,7 +920,7 @@
MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
dprintk(2, "%s\n", __FUNCTION__);
- mutex_lock(&q->lock);
+ mutex_lock(&q->vb_lock);
retval = -EBUSY;
if (q->streaming)
goto done;
@@ -980,7 +980,7 @@
}
done:
- mutex_unlock(&q->lock);
+ mutex_unlock(&q->vb_lock);
return retval;
}
@@ -991,7 +991,7 @@
struct videobuf_buffer *buf = NULL;
unsigned int rc = 0;
- mutex_lock(&q->lock);
+ mutex_lock(&q->vb_lock);
if (q->streaming) {
if (!list_empty(&q->stream))
buf = list_entry(q->stream.next,
@@ -1019,7 +1019,7 @@
buf->state == VIDEOBUF_ERROR)
rc = POLLIN|POLLRDNORM;
}
- mutex_unlock(&q->lock);
+ mutex_unlock(&q->vb_lock);
return rc;
}
@@ -1030,10 +1030,10 @@
MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
- mutex_lock(&q->lock);
+ mutex_lock(&q->vb_lock);
retval = CALL(q, mmap_mapper, q, vma);
q->is_mmapped = 1;
- mutex_unlock(&q->lock);
+ mutex_unlock(&q->vb_lock);
return retval;
}