search for: v4l2_create_buff

...e queue consistency (memory coherency) user-space hint because, as it turned out, the kernel implementation of this feature was misusing DMA_ATTR_NON_CONSISTENT. The patch revers both kernel and user space parts: removes the DMA consistency attr functions, rollbacks changes to v4l2_requestbuffers, v4l2_create_buffers structures and corresponding UAPI functions (plus compat32 layer) and cleanups the documentation. Signed-off-by: Christoph Hellwig <hch at lst.de> Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky at gmail.com> Signed-off-by: Christoph Hellwig <hch at lst.de> --- .../user...

Hi all, this series replaced the DMA_ATTR_NON_CONSISTENT flag to dma_alloc_attrs with a separate new dma_alloc_pages API, which is available on all platforms. In addition to cleaning up the convoluted code path, this ensures that other drivers that have asked for better support for non-coherent DMA to pages with incurring bounce buffering over can finally be properly supported. As a follow up I

Hi all, this series replaced the DMA_ATTR_NON_CONSISTENT flag to dma_alloc_attrs with a separate new dma_alloc_pages API, which is available on all platforms. In addition to cleaning up the convoluted code path, this ensures that other drivers that have asked for better support for non-coherent DMA to pages with incurring bounce buffering over can finally be properly supported. I'm still a

...clear_consistency_attr(q, req->memory, &req->flags); > return ret ? ret : vb2_core_reqbufs(q, req->memory, > req->flags, &req->count); > } > @@ -769,7 +760,6 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create) > unsigned i; > > fill_buf_caps(q, &create->capabilities); > - clear_consistency_attr(q, create->memory, &create->flags); > create->index = q->num_buffers; > if (create->count == 0) > re...

...->type); fill_buf_caps(q, &req->capabilities); - clear_consistency_attr(q, req->memory, &req->flags); return ret ? ret : vb2_core_reqbufs(q, req->memory, req->flags, &req->count); } @@ -769,7 +760,6 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create) unsigned i; fill_buf_caps(q, &create->capabilities); - clear_consistency_attr(q, create->memory, &create->flags); create->index = q->num_buffers; if (create->count == 0) return ret != -EBUSY ? ret : 0; @@ -998,7 +988,6 @@ int vb2_ioctl_reqbufs(stru...

...y_attr(q, req->memory, &req->flags); >> return ret ? ret : vb2_core_reqbufs(q, req->memory, >> req->flags, &req->count); >> } >> @@ -769,7 +760,6 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create) >> unsigned i; >> >> fill_buf_caps(q, &create->capabilities); >> - clear_consistency_attr(q, create->memory, &create->flags); >> create->index = q->num_buffers; >> if (create->count =...

...mory, &req->flags); > >> return ret ? ret : vb2_core_reqbufs(q, req->memory, > >> req->flags, &req->count); > >> } > >> @@ -769,7 +760,6 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create) > >> unsigned i; > >> > >> fill_buf_caps(q, &create->capabilities); > >> - clear_consistency_attr(q, create->memory, &create->flags); > >> create->index = q->num_buffers; > >>...

Hi all, this series replaced the DMA_ATTR_NON_CONSISTENT flag to dma_alloc_attrs with a separate new dma_alloc_pages API, which is available on all platforms. In addition to cleaning up the convoluted code path, this ensures that other drivers that have asked for better support for non-coherent DMA to pages with incurring bounce buffering over can finally be properly supported. I'm still a