vb2-dma-contig returns a vb2_dc_conf structure instance as the vb2
allocation context. That structure only stores a pointer to the physical
device. Remove it and use the device pointer directly as the allocation
context.
Signed-off-by: Tomasz Stanislawski <t.stanislaws@xxxxxxxxxxx>
Acked-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
---
drivers/media/video/videobuf2-dma-contig.c | 29 ++++++---------------------
1 files changed, 7 insertions(+), 22 deletions(-)
diff --git a/drivers/media/video/videobuf2-dma-contig.c b/drivers/media/video/videobuf2-dma-contig.c
index 5207eb1..ff0a662 100644
--- a/drivers/media/video/videobuf2-dma-contig.c
+++ b/drivers/media/video/videobuf2-dma-contig.c
@@ -17,12 +17,8 @@
#include <media/videobuf2-core.h>
#include <media/videobuf2-memops.h>
-struct vb2_dc_conf {
- struct device *dev;
-};
-
struct vb2_dc_buf {
- struct vb2_dc_conf *conf;
+ struct device *dev;
void *vaddr;
dma_addr_t dma_addr;
unsigned long size;
@@ -35,23 +31,21 @@ static void vb2_dc_put(void *buf_priv);
static void *vb2_dc_alloc(void *alloc_ctx, unsigned long size)
{
- struct vb2_dc_conf *conf = alloc_ctx;
+ struct device *dev = alloc_ctx;
struct vb2_dc_buf *buf;
buf = kzalloc(sizeof *buf, GFP_KERNEL);
if (!buf)
return ERR_PTR(-ENOMEM);
- buf->vaddr = dma_alloc_coherent(conf->dev, size, &buf->dma_addr,
- GFP_KERNEL);
+ buf->vaddr = dma_alloc_coherent(dev, size, &buf->dma_addr, GFP_KERNEL);
if (!buf->vaddr) {
- dev_err(conf->dev, "dma_alloc_coherent of size %ld failed\n",
- size);
+ dev_err(dev, "dma_alloc_coherent of size %ld failed\n", size);
kfree(buf);
return ERR_PTR(-ENOMEM);
}
- buf->conf = conf;
+ buf->dev = dev;
buf->size = size;
buf->handler.refcount = &buf->refcount;
@@ -68,7 +62,7 @@ static void vb2_dc_put(void *buf_priv)
struct vb2_dc_buf *buf = buf_priv;
if (atomic_dec_and_test(&buf->refcount)) {
- dma_free_coherent(buf->conf->dev, buf->size, buf->vaddr,
+ dma_free_coherent(buf->dev, buf->size, buf->vaddr,
buf->dma_addr);
kfree(buf);
}
@@ -162,21 +156,12 @@ EXPORT_SYMBOL_GPL(vb2_dma_contig_memops);
void *vb2_dma_contig_init_ctx(struct device *dev)
{
- struct vb2_dc_conf *conf;
-
- conf = kzalloc(sizeof *conf, GFP_KERNEL);
- if (!conf)
- return ERR_PTR(-ENOMEM);
-
- conf->dev = dev;
-
- return conf;
+ return dev;
}
EXPORT_SYMBOL_GPL(vb2_dma_contig_init_ctx);
void vb2_dma_contig_cleanup_ctx(void *alloc_ctx)
{
- kfree(alloc_ctx);
}
EXPORT_SYMBOL_GPL(vb2_dma_contig_cleanup_ctx);
--
1.7.5.4
--
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