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Diffstat (limited to 'drivers/media/v4l2-core')
-rw-r--r--drivers/media/v4l2-core/videobuf2-core.c40
-rw-r--r--drivers/media/v4l2-core/videobuf2-dma-contig.c88
-rw-r--r--drivers/media/v4l2-core/videobuf2-dma-sg.c45
-rw-r--r--drivers/media/v4l2-core/videobuf2-v4l2.c53
-rw-r--r--drivers/media/v4l2-core/videobuf2-vmalloc.c9
5 files changed, 119 insertions, 116 deletions
diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c
index 9fbcb67a9ee6..ca8ffeb56d72 100644
--- a/drivers/media/v4l2-core/videobuf2-core.c
+++ b/drivers/media/v4l2-core/videobuf2-core.c
@@ -206,8 +206,9 @@ static int __vb2_buf_mem_alloc(struct vb2_buffer *vb)
for (plane = 0; plane < vb->num_planes; ++plane) {
unsigned long size = PAGE_ALIGN(vb->planes[plane].length);
- mem_priv = call_ptr_memop(vb, alloc, q->alloc_ctx[plane],
- size, dma_dir, q->gfp_flags);
+ mem_priv = call_ptr_memop(vb, alloc,
+ q->alloc_devs[plane] ? : q->dev,
+ q->dma_attrs, size, dma_dir, q->gfp_flags);
if (IS_ERR_OR_NULL(mem_priv))
goto free;
@@ -737,7 +738,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
*/
num_buffers = min_t(unsigned int, *count, VB2_MAX_FRAME);
num_buffers = max_t(unsigned int, num_buffers, q->min_buffers_needed);
- memset(q->alloc_ctx, 0, sizeof(q->alloc_ctx));
+ memset(q->alloc_devs, 0, sizeof(q->alloc_devs));
q->memory = memory;
/*
@@ -745,7 +746,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
* Driver also sets the size and allocator context for each plane.
*/
ret = call_qop(q, queue_setup, q, &num_buffers, &num_planes,
- plane_sizes, q->alloc_ctx);
+ plane_sizes, q->alloc_devs);
if (ret)
return ret;
@@ -778,7 +779,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
num_planes = 0;
ret = call_qop(q, queue_setup, q, &num_buffers,
- &num_planes, plane_sizes, q->alloc_ctx);
+ &num_planes, plane_sizes, q->alloc_devs);
if (!ret && allocated_buffers < num_buffers)
ret = -ENOMEM;
@@ -844,7 +845,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
}
if (!q->num_buffers) {
- memset(q->alloc_ctx, 0, sizeof(q->alloc_ctx));
+ memset(q->alloc_devs, 0, sizeof(q->alloc_devs));
q->memory = memory;
q->waiting_for_buffers = !q->is_output;
}
@@ -861,7 +862,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
* buffer and their sizes are acceptable
*/
ret = call_qop(q, queue_setup, q, &num_buffers,
- &num_planes, plane_sizes, q->alloc_ctx);
+ &num_planes, plane_sizes, q->alloc_devs);
if (ret)
return ret;
@@ -884,7 +885,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
* queue driver has set up
*/
ret = call_qop(q, queue_setup, q, &num_buffers,
- &num_planes, plane_sizes, q->alloc_ctx);
+ &num_planes, plane_sizes, q->alloc_devs);
if (!ret && allocated_buffers < num_buffers)
ret = -ENOMEM;
@@ -1131,9 +1132,10 @@ static int __qbuf_userptr(struct vb2_buffer *vb, const void *pb)
vb->planes[plane].data_offset = 0;
/* Acquire each plane's memory */
- mem_priv = call_ptr_memop(vb, get_userptr, q->alloc_ctx[plane],
- planes[plane].m.userptr,
- planes[plane].length, dma_dir);
+ mem_priv = call_ptr_memop(vb, get_userptr,
+ q->alloc_devs[plane] ? : q->dev,
+ planes[plane].m.userptr,
+ planes[plane].length, dma_dir);
if (IS_ERR_OR_NULL(mem_priv)) {
dprintk(1, "failed acquiring userspace "
"memory for plane %d\n", plane);
@@ -1256,8 +1258,8 @@ static int __qbuf_dmabuf(struct vb2_buffer *vb, const void *pb)
/* Acquire each plane's memory */
mem_priv = call_ptr_memop(vb, attach_dmabuf,
- q->alloc_ctx[plane], dbuf, planes[plane].length,
- dma_dir);
+ q->alloc_devs[plane] ? : q->dev,
+ dbuf, planes[plane].length, dma_dir);
if (IS_ERR(mem_priv)) {
dprintk(1, "failed to attach dmabuf\n");
ret = PTR_ERR(mem_priv);
@@ -1648,7 +1650,7 @@ static int __vb2_get_done_vb(struct vb2_queue *q, struct vb2_buffer **vb,
void *pb, int nonblocking)
{
unsigned long flags;
- int ret;
+ int ret = 0;
/*
* Wait for at least one buffer to become available on the done_list.
@@ -1664,10 +1666,12 @@ static int __vb2_get_done_vb(struct vb2_queue *q, struct vb2_buffer **vb,
spin_lock_irqsave(&q->done_lock, flags);
*vb = list_first_entry(&q->done_list, struct vb2_buffer, done_entry);
/*
- * Only remove the buffer from done_list if v4l2_buffer can handle all
- * the planes.
+ * Only remove the buffer from done_list if all planes can be
+ * handled. Some cases such as V4L2 file I/O and DVB have pb
+ * == NULL; skip the check then as there's nothing to verify.
*/
- ret = call_bufop(q, verify_planes_array, *vb, pb);
+ if (pb)
+ ret = call_bufop(q, verify_planes_array, *vb, pb);
if (!ret)
list_del(&(*vb)->done_entry);
spin_unlock_irqrestore(&q->done_lock, flags);
@@ -1843,7 +1847,7 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
* Make sure to call buf_finish for any queued buffers. Normally
* that's done in dqbuf, but that's not going to happen when we
* cancel the whole queue. Note: this code belongs here, not in
- * __vb2_dqbuf() since in vb2_internal_dqbuf() there is a critical
+ * __vb2_dqbuf() since in vb2_core_dqbuf() there is a critical
* call to __fill_user_buffer() after buf_finish(). That order can't
* be changed, so we can't move the buf_finish() to __vb2_dqbuf().
*/
diff --git a/drivers/media/v4l2-core/videobuf2-dma-contig.c b/drivers/media/v4l2-core/videobuf2-dma-contig.c
index 5361197f3e57..863f658a3fa1 100644
--- a/drivers/media/v4l2-core/videobuf2-dma-contig.c
+++ b/drivers/media/v4l2-core/videobuf2-dma-contig.c
@@ -21,11 +21,6 @@
#include <media/videobuf2-dma-contig.h>
#include <media/videobuf2-memops.h>
-struct vb2_dc_conf {
- struct device *dev;
- struct dma_attrs attrs;
-};
-
struct vb2_dc_buf {
struct device *dev;
void *vaddr;
@@ -140,18 +135,18 @@ static void vb2_dc_put(void *buf_priv)
kfree(buf);
}
-static void *vb2_dc_alloc(void *alloc_ctx, unsigned long size,
- enum dma_data_direction dma_dir, gfp_t gfp_flags)
+static void *vb2_dc_alloc(struct device *dev, const struct dma_attrs *attrs,
+ unsigned long size, enum dma_data_direction dma_dir,
+ gfp_t gfp_flags)
{
- struct vb2_dc_conf *conf = alloc_ctx;
- struct device *dev = conf->dev;
struct vb2_dc_buf *buf;
buf = kzalloc(sizeof *buf, GFP_KERNEL);
if (!buf)
return ERR_PTR(-ENOMEM);
- buf->attrs = conf->attrs;
+ if (attrs)
+ buf->attrs = *attrs;
buf->cookie = dma_alloc_attrs(dev, size, &buf->dma_addr,
GFP_KERNEL | gfp_flags, &buf->attrs);
if (!buf->cookie) {
@@ -478,10 +473,9 @@ static inline dma_addr_t vb2_dc_pfn_to_dma(struct device *dev, unsigned long pfn
}
#endif
-static void *vb2_dc_get_userptr(void *alloc_ctx, unsigned long vaddr,
+static void *vb2_dc_get_userptr(struct device *dev, unsigned long vaddr,
unsigned long size, enum dma_data_direction dma_dir)
{
- struct vb2_dc_conf *conf = alloc_ctx;
struct vb2_dc_buf *buf;
struct frame_vector *vec;
unsigned long offset;
@@ -509,7 +503,7 @@ static void *vb2_dc_get_userptr(void *alloc_ctx, unsigned long vaddr,
if (!buf)
return ERR_PTR(-ENOMEM);
- buf->dev = conf->dev;
+ buf->dev = dev;
buf->dma_dir = dma_dir;
offset = vaddr & ~PAGE_MASK;
@@ -676,10 +670,9 @@ static void vb2_dc_detach_dmabuf(void *mem_priv)
kfree(buf);
}
-static void *vb2_dc_attach_dmabuf(void *alloc_ctx, struct dma_buf *dbuf,
+static void *vb2_dc_attach_dmabuf(struct device *dev, struct dma_buf *dbuf,
unsigned long size, enum dma_data_direction dma_dir)
{
- struct vb2_dc_conf *conf = alloc_ctx;
struct vb2_dc_buf *buf;
struct dma_buf_attachment *dba;
@@ -690,7 +683,7 @@ static void *vb2_dc_attach_dmabuf(void *alloc_ctx, struct dma_buf *dbuf,
if (!buf)
return ERR_PTR(-ENOMEM);
- buf->dev = conf->dev;
+ buf->dev = dev;
/* create attachment for the dmabuf with the user device */
dba = dma_buf_attach(dbuf, buf->dev);
if (IS_ERR(dba)) {
@@ -729,29 +722,58 @@ const struct vb2_mem_ops vb2_dma_contig_memops = {
};
EXPORT_SYMBOL_GPL(vb2_dma_contig_memops);
-void *vb2_dma_contig_init_ctx_attrs(struct device *dev,
- struct dma_attrs *attrs)
+/**
+ * vb2_dma_contig_set_max_seg_size() - configure DMA max segment size
+ * @dev: device for configuring DMA parameters
+ * @size: size of DMA max segment size to set
+ *
+ * To allow mapping the scatter-list into a single chunk in the DMA
+ * address space, the device is required to have the DMA max segment
+ * size parameter set to a value larger than the buffer size. Otherwise,
+ * the DMA-mapping subsystem will split the mapping into max segment
+ * size chunks. This function sets the DMA max segment size
+ * parameter to let DMA-mapping map a buffer as a single chunk in DMA
+ * address space.
+ * This code assumes that the DMA-mapping subsystem will merge all
+ * scatterlist segments if this is really possible (for example when
+ * an IOMMU is available and enabled).
+ * Ideally, this parameter should be set by the generic bus code, but it
+ * is left with the default 64KiB value due to historical litmiations in
+ * other subsystems (like limited USB host drivers) and there no good
+ * place to set it to the proper value.
+ * This function should be called from the drivers, which are known to
+ * operate on platforms with IOMMU and provide access to shared buffers
+ * (either USERPTR or DMABUF). This should be done before initializing
+ * videobuf2 queue.
+ */
+int vb2_dma_contig_set_max_seg_size(struct device *dev, unsigned int size)
{
- struct vb2_dc_conf *conf;
-
- conf = kzalloc(sizeof *conf, GFP_KERNEL);
- if (!conf)
- return ERR_PTR(-ENOMEM);
-
- conf->dev = dev;
- if (attrs)
- conf->attrs = *attrs;
+ if (!dev->dma_parms) {
+ dev->dma_parms = kzalloc(sizeof(dev->dma_parms), GFP_KERNEL);
+ if (!dev->dma_parms)
+ return -ENOMEM;
+ }
+ if (dma_get_max_seg_size(dev) < size)
+ return dma_set_max_seg_size(dev, size);
- return conf;
+ return 0;
}
-EXPORT_SYMBOL_GPL(vb2_dma_contig_init_ctx_attrs);
+EXPORT_SYMBOL_GPL(vb2_dma_contig_set_max_seg_size);
-void vb2_dma_contig_cleanup_ctx(void *alloc_ctx)
+/*
+ * vb2_dma_contig_clear_max_seg_size() - release resources for DMA parameters
+ * @dev: device for configuring DMA parameters
+ *
+ * This function releases resources allocated to configure DMA parameters
+ * (see vb2_dma_contig_set_max_seg_size() function). It should be called from
+ * device drivers on driver remove.
+ */
+void vb2_dma_contig_clear_max_seg_size(struct device *dev)
{
- if (!IS_ERR_OR_NULL(alloc_ctx))
- kfree(alloc_ctx);
+ kfree(dev->dma_parms);
+ dev->dma_parms = NULL;
}
-EXPORT_SYMBOL_GPL(vb2_dma_contig_cleanup_ctx);
+EXPORT_SYMBOL_GPL(vb2_dma_contig_clear_max_seg_size);
MODULE_DESCRIPTION("DMA-contig memory handling routines for videobuf2");
MODULE_AUTHOR("Pawel Osciak <pawel@osciak.com>");
diff --git a/drivers/media/v4l2-core/videobuf2-dma-sg.c b/drivers/media/v4l2-core/videobuf2-dma-sg.c
index 9985c89f0513..a39db8a6db7a 100644
--- a/drivers/media/v4l2-core/videobuf2-dma-sg.c
+++ b/drivers/media/v4l2-core/videobuf2-dma-sg.c
@@ -30,10 +30,6 @@ module_param(debug, int, 0644);
printk(KERN_DEBUG "vb2-dma-sg: " fmt, ## arg); \
} while (0)
-struct vb2_dma_sg_conf {
- struct device *dev;
-};
-
struct vb2_dma_sg_buf {
struct device *dev;
void *vaddr;
@@ -99,10 +95,10 @@ static int vb2_dma_sg_alloc_compacted(struct vb2_dma_sg_buf *buf,
return 0;
}
-static void *vb2_dma_sg_alloc(void *alloc_ctx, unsigned long size,
- enum dma_data_direction dma_dir, gfp_t gfp_flags)
+static void *vb2_dma_sg_alloc(struct device *dev, const struct dma_attrs *dma_attrs,
+ unsigned long size, enum dma_data_direction dma_dir,
+ gfp_t gfp_flags)
{
- struct vb2_dma_sg_conf *conf = alloc_ctx;
struct vb2_dma_sg_buf *buf;
struct sg_table *sgt;
int ret;
@@ -111,7 +107,7 @@ static void *vb2_dma_sg_alloc(void *alloc_ctx, unsigned long size,
dma_set_attr(DMA_ATTR_SKIP_CPU_SYNC, &attrs);
- if (WARN_ON(alloc_ctx == NULL))
+ if (WARN_ON(dev == NULL))
return NULL;
buf = kzalloc(sizeof *buf, GFP_KERNEL);
if (!buf)
@@ -140,7 +136,7 @@ static void *vb2_dma_sg_alloc(void *alloc_ctx, unsigned long size,
goto fail_table_alloc;
/* Prevent the device from being released while the buffer is used */
- buf->dev = get_device(conf->dev);
+ buf->dev = get_device(dev);
sgt = &buf->sg_table;
/*
@@ -226,11 +222,10 @@ static void vb2_dma_sg_finish(void *buf_priv)
dma_sync_sg_for_cpu(buf->dev, sgt->sgl, sgt->orig_nents, buf->dma_dir);
}
-static void *vb2_dma_sg_get_userptr(void *alloc_ctx, unsigned long vaddr,
+static void *vb2_dma_sg_get_userptr(struct device *dev, unsigned long vaddr,
unsigned long size,
enum dma_data_direction dma_dir)
{
- struct vb2_dma_sg_conf *conf = alloc_ctx;
struct vb2_dma_sg_buf *buf;
struct sg_table *sgt;
DEFINE_DMA_ATTRS(attrs);
@@ -242,7 +237,7 @@ static void *vb2_dma_sg_get_userptr(void *alloc_ctx, unsigned long vaddr,
return NULL;
buf->vaddr = NULL;
- buf->dev = conf->dev;
+ buf->dev = dev;
buf->dma_dir = dma_dir;
buf->offset = vaddr & ~PAGE_MASK;
buf->size = size;
@@ -616,10 +611,9 @@ static void vb2_dma_sg_detach_dmabuf(void *mem_priv)
kfree(buf);
}
-static void *vb2_dma_sg_attach_dmabuf(void *alloc_ctx, struct dma_buf *dbuf,
+static void *vb2_dma_sg_attach_dmabuf(struct device *dev, struct dma_buf *dbuf,
unsigned long size, enum dma_data_direction dma_dir)
{
- struct vb2_dma_sg_conf *conf = alloc_ctx;
struct vb2_dma_sg_buf *buf;
struct dma_buf_attachment *dba;
@@ -630,7 +624,7 @@ static void *vb2_dma_sg_attach_dmabuf(void *alloc_ctx, struct dma_buf *dbuf,
if (!buf)
return ERR_PTR(-ENOMEM);
- buf->dev = conf->dev;
+ buf->dev = dev;
/* create attachment for the dmabuf with the user device */
dba = dma_buf_attach(dbuf, buf->dev);
if (IS_ERR(dba)) {
@@ -672,27 +666,6 @@ const struct vb2_mem_ops vb2_dma_sg_memops = {
};
EXPORT_SYMBOL_GPL(vb2_dma_sg_memops);
-void *vb2_dma_sg_init_ctx(struct device *dev)
-{
- struct vb2_dma_sg_conf *conf;
-
- conf = kzalloc(sizeof(*conf), GFP_KERNEL);
- if (!conf)
- return ERR_PTR(-ENOMEM);
-
- conf->dev = dev;
-
- return conf;
-}
-EXPORT_SYMBOL_GPL(vb2_dma_sg_init_ctx);
-
-void vb2_dma_sg_cleanup_ctx(void *alloc_ctx)
-{
- if (!IS_ERR_OR_NULL(alloc_ctx))
- kfree(alloc_ctx);
-}
-EXPORT_SYMBOL_GPL(vb2_dma_sg_cleanup_ctx);
-
MODULE_DESCRIPTION("dma scatter/gather memory handling routines for videobuf2");
MODULE_AUTHOR("Andrzej Pietrasiewicz");
MODULE_LICENSE("GPL");
diff --git a/drivers/media/v4l2-core/videobuf2-v4l2.c b/drivers/media/v4l2-core/videobuf2-v4l2.c
index 0b1b8c7b6ce5..9cfbb6e4bc28 100644
--- a/drivers/media/v4l2-core/videobuf2-v4l2.c
+++ b/drivers/media/v4l2-core/videobuf2-v4l2.c
@@ -74,6 +74,11 @@ static int __verify_planes_array(struct vb2_buffer *vb, const struct v4l2_buffer
return 0;
}
+static int __verify_planes_array_core(struct vb2_buffer *vb, const void *pb)
+{
+ return __verify_planes_array(vb, pb);
+}
+
/**
* __verify_length() - Verify that the bytesused value for each plane fits in
* the plane length and that the data offset doesn't exceed the bytesused value.
@@ -422,7 +427,7 @@ static int __fill_vb2_buffer(struct vb2_buffer *vb,
if (V4L2_TYPE_IS_OUTPUT(b->type)) {
/*
* For output buffers mask out the timecode flag:
- * this will be handled later in vb2_internal_qbuf().
+ * this will be handled later in vb2_qbuf().
* The 'field' is valid metadata for this output buffer
* and so that needs to be copied here.
*/
@@ -437,6 +442,7 @@ static int __fill_vb2_buffer(struct vb2_buffer *vb,
}
static const struct vb2_buf_ops v4l2_buf_ops = {
+ .verify_planes_array = __verify_planes_array_core,
.fill_user_buffer = __fill_v4l2_buffer,
.fill_vb2_buffer = __fill_vb2_buffer,
.copy_timestamp = __copy_timestamp,
@@ -580,13 +586,6 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
}
EXPORT_SYMBOL_GPL(vb2_create_bufs);
-static int vb2_internal_qbuf(struct vb2_queue *q, struct v4l2_buffer *b)
-{
- int ret = vb2_queue_or_prepare_buf(q, b, "qbuf");
-
- return ret ? ret : vb2_core_qbuf(q, b->index, b);
-}
-
/**
* vb2_qbuf() - Queue a buffer from userspace
* @q: videobuf2 queue
@@ -606,30 +605,18 @@ static int vb2_internal_qbuf(struct vb2_queue *q, struct v4l2_buffer *b)
*/
int vb2_qbuf(struct vb2_queue *q, struct v4l2_buffer *b)
{
+ int ret;
+
if (vb2_fileio_is_active(q)) {
dprintk(1, "file io in progress\n");
return -EBUSY;
}
- return vb2_internal_qbuf(q, b);
+ ret = vb2_queue_or_prepare_buf(q, b, "qbuf");
+ return ret ? ret : vb2_core_qbuf(q, b->index, b);
}
EXPORT_SYMBOL_GPL(vb2_qbuf);
-static int vb2_internal_dqbuf(struct vb2_queue *q, struct v4l2_buffer *b,
- bool nonblocking)
-{
- int ret;
-
- if (b->type != q->type) {
- dprintk(1, "invalid buffer type\n");
- return -EINVAL;
- }
-
- ret = vb2_core_dqbuf(q, NULL, b, nonblocking);
-
- return ret;
-}
-
/**
* vb2_dqbuf() - Dequeue a buffer to the userspace
* @q: videobuf2 queue
@@ -653,11 +640,27 @@ static int vb2_internal_dqbuf(struct vb2_queue *q, struct v4l2_buffer *b,
*/
int vb2_dqbuf(struct vb2_queue *q, struct v4l2_buffer *b, bool nonblocking)
{
+ int ret;
+
if (vb2_fileio_is_active(q)) {
dprintk(1, "file io in progress\n");
return -EBUSY;
}
- return vb2_internal_dqbuf(q, b, nonblocking);
+
+ if (b->type != q->type) {
+ dprintk(1, "invalid buffer type\n");
+ return -EINVAL;
+ }
+
+ ret = vb2_core_dqbuf(q, NULL, b, nonblocking);
+
+ /*
+ * After calling the VIDIOC_DQBUF V4L2_BUF_FLAG_DONE must be
+ * cleared.
+ */
+ b->flags &= ~V4L2_BUF_FLAG_DONE;
+
+ return ret;
}
EXPORT_SYMBOL_GPL(vb2_dqbuf);
diff --git a/drivers/media/v4l2-core/videobuf2-vmalloc.c b/drivers/media/v4l2-core/videobuf2-vmalloc.c
index 1c302743a1fd..7e8a07ed8d82 100644
--- a/drivers/media/v4l2-core/videobuf2-vmalloc.c
+++ b/drivers/media/v4l2-core/videobuf2-vmalloc.c
@@ -33,8 +33,9 @@ struct vb2_vmalloc_buf {
static void vb2_vmalloc_put(void *buf_priv);
-static void *vb2_vmalloc_alloc(void *alloc_ctx, unsigned long size,
- enum dma_data_direction dma_dir, gfp_t gfp_flags)
+static void *vb2_vmalloc_alloc(struct device *dev, const struct dma_attrs *attrs,
+ unsigned long size, enum dma_data_direction dma_dir,
+ gfp_t gfp_flags)
{
struct vb2_vmalloc_buf *buf;
@@ -69,7 +70,7 @@ static void vb2_vmalloc_put(void *buf_priv)
}
}
-static void *vb2_vmalloc_get_userptr(void *alloc_ctx, unsigned long vaddr,
+static void *vb2_vmalloc_get_userptr(struct device *dev, unsigned long vaddr,
unsigned long size,
enum dma_data_direction dma_dir)
{
@@ -403,7 +404,7 @@ static void vb2_vmalloc_detach_dmabuf(void *mem_priv)
kfree(buf);
}
-static void *vb2_vmalloc_attach_dmabuf(void *alloc_ctx, struct dma_buf *dbuf,
+static void *vb2_vmalloc_attach_dmabuf(struct device *dev, struct dma_buf *dbuf,
unsigned long size, enum dma_data_direction dma_dir)
{
struct vb2_vmalloc_buf *buf;
generated by cgit v1.2.3 (git 2.25.1) at 2025-03-29 20:01:24 +0000