@@ -527,13 +527,12 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
/*
* __vb2_free_mem() - release all video buffer memory for a given queue
*/
-static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
+static void __vb2_free_mem(struct vb2_queue *q, unsigned int start, unsigned int count)
{
- unsigned int buffer = 0;
- long i = q->max_allowed_buffers;
+ unsigned int i, buffer = 0;
struct vb2_buffer *vb;
- for (i = q->max_allowed_buffers; i >= 0 && buffer < buffers; i--) {
+ for (i = start; i < q->max_allowed_buffers && buffer < count; i++) {
vb = vb2_get_buffer(q, i);
if (!vb)
continue;
@@ -550,19 +549,18 @@ static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
}
/*
- * __vb2_queue_free() - free buffers at the end of the queue - video memory and
+ * __vb2_queue_free() - free count buffers from start index of the queue - video memory and
* related information, if no buffers are left return the queue to an
* uninitialized state. Might be called even if the queue has already been freed.
*/
-static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
+static void __vb2_queue_free(struct vb2_queue *q, unsigned int start, unsigned int count)
{
- unsigned int buffer;
- long i = q->max_allowed_buffers;
+ unsigned int i, buffer;
lockdep_assert_held(&q->mmap_lock);
/* Call driver-provided cleanup function for each buffer, if provided */
- for (i = q->max_allowed_buffers, buffer = 0; i >= 0 && buffer < buffers; i--) {
+ for (i = start, buffer = 0; i < q->max_allowed_buffers && buffer < count; i++) {
struct vb2_buffer *vb = vb2_get_buffer(q, i);
if (!vb)
@@ -574,7 +572,7 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
}
/* Release video buffer memory */
- __vb2_free_mem(q, buffers);
+ __vb2_free_mem(q, start, count);
#ifdef CONFIG_VIDEO_ADV_DEBUG
/*
@@ -659,8 +657,8 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
#endif
/* Free vb2 buffers */
- for (i = q->max_allowed_buffers, buffer = 0; i > 0 && buffer < buffers; i--) {
- struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
+ for (i = start, buffer = 0; i < q->max_allowed_buffers && buffer < count; i++) {
+ struct vb2_buffer *vb = vb2_get_buffer(q, i);
if (!vb)
continue;
@@ -884,7 +882,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
* queued without ever calling STREAMON.
*/
__vb2_queue_cancel(q);
- __vb2_queue_free(q, q_num_bufs);
+ __vb2_queue_free(q, 0, q_num_bufs);
mutex_unlock(&q->mmap_lock);
/*
@@ -995,7 +993,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
* from already queued buffers and it will reset q->memory to
* VB2_MEMORY_UNKNOWN.
*/
- __vb2_queue_free(q, allocated_buffers);
+ __vb2_queue_free(q, 0, allocated_buffers);
mutex_unlock(&q->mmap_lock);
return ret;
}
@@ -1135,7 +1133,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
* from already queued buffers and it will reset q->memory to
* VB2_MEMORY_UNKNOWN.
*/
- __vb2_queue_free(q, allocated_buffers);
+ __vb2_queue_free(q, 0, allocated_buffers);
mutex_unlock(&q->mmap_lock);
return -ENOMEM;
}
@@ -2617,7 +2615,7 @@ void vb2_core_queue_release(struct vb2_queue *q)
__vb2_cleanup_fileio(q);
__vb2_queue_cancel(q);
mutex_lock(&q->mmap_lock);
- __vb2_queue_free(q, q->max_allowed_buffers);
+ __vb2_queue_free(q, 0, q->max_allowed_buffers);
kfree(q->bufs);
q->bufs = NULL;
bitmap_free(q->bufs_map);
Improve __vb2_queue_free() and __vb2_free_mem() to free range of buffers and not only the last few buffers. Intoduce starting index to be flexible on range and change the loops according to this parameters. Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com> --- .../media/common/videobuf2/videobuf2-core.c | 30 +++++++++---------- 1 file changed, 14 insertions(+), 16 deletions(-)