* [PATCH] media: videobuf2: always set buffer vb2 pointer
@ 2021-09-28 3:46 Sergey Senozhatsky
2021-09-28 6:24 ` Chen-Yu Tsai
2021-10-05 9:57 ` Tomasz Figa
0 siblings, 2 replies; 6+ messages in thread
From: Sergey Senozhatsky @ 2021-09-28 3:46 UTC (permalink / raw)
To: Tomasz Figa, Hans Verkuil
Cc: Marek Szyprowski, Mauro Carvalho Chehab, Ricardo Ribalda,
linux-media, linux-kernel, Sergey Senozhatsky
We need to always link allocated vb2_dc_buf back to vb2_buffer because
we dereference vb2 in prepare() and finish() callbacks.
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
---
drivers/media/common/videobuf2/videobuf2-dma-contig.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/media/common/videobuf2/videobuf2-dma-contig.c b/drivers/media/common/videobuf2/videobuf2-dma-contig.c
index b052a4e36961..38767791955d 100644
--- a/drivers/media/common/videobuf2/videobuf2-dma-contig.c
+++ b/drivers/media/common/videobuf2/videobuf2-dma-contig.c
@@ -600,6 +600,7 @@ static void *vb2_dc_get_userptr(struct vb2_buffer *vb, struct device *dev,
buf->dev = dev;
buf->dma_dir = vb->vb2_queue->dma_dir;
+ buf->vb = vb;
offset = lower_32_bits(offset_in_page(vaddr));
vec = vb2_create_framevec(vaddr, size);
@@ -788,6 +789,8 @@ static void *vb2_dc_attach_dmabuf(struct vb2_buffer *vb, struct device *dev,
return ERR_PTR(-ENOMEM);
buf->dev = dev;
+ buf->vb = vb;
+
/* create attachment for the dmabuf with the user device */
dba = dma_buf_attach(dbuf, buf->dev);
if (IS_ERR(dba)) {
--
2.33.0.685.g46640cef36-goog
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH] media: videobuf2: always set buffer vb2 pointer
2021-09-28 3:46 [PATCH] media: videobuf2: always set buffer vb2 pointer Sergey Senozhatsky
@ 2021-09-28 6:24 ` Chen-Yu Tsai
2021-09-28 7:53 ` Chen-Yu Tsai
2021-10-05 9:57 ` Tomasz Figa
1 sibling, 1 reply; 6+ messages in thread
From: Chen-Yu Tsai @ 2021-09-28 6:24 UTC (permalink / raw)
To: Sergey Senozhatsky
Cc: Tomasz Figa, Hans Verkuil, Marek Szyprowski,
Mauro Carvalho Chehab, Ricardo Ribalda, Linux Media Mailing List,
LKML
On Tue, Sep 28, 2021 at 2:16 PM Sergey Senozhatsky
<senozhatsky@chromium.org> wrote:
>
> We need to always link allocated vb2_dc_buf back to vb2_buffer because
> we dereference vb2 in prepare() and finish() callbacks.
>
> Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
This fixes the breakage from the "videobuf2: support new noncontiguous DMA
API" series on the RK3399 Scarlet if the ChromeOS patch that changes
min_buffers_needed to 0 [1] is not applied.
Since there are other in-tree drivers that have min_buffers_needed=0,
I would recommend getting some more testing.
ChenYu
[1] https://crrev.com/c/3168489
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] media: videobuf2: always set buffer vb2 pointer
2021-09-28 6:24 ` Chen-Yu Tsai
@ 2021-09-28 7:53 ` Chen-Yu Tsai
0 siblings, 0 replies; 6+ messages in thread
From: Chen-Yu Tsai @ 2021-09-28 7:53 UTC (permalink / raw)
To: Sergey Senozhatsky
Cc: Tomasz Figa, Hans Verkuil, Marek Szyprowski,
Mauro Carvalho Chehab, Ricardo Ribalda, Linux Media Mailing List,
LKML
On Tue, Sep 28, 2021 at 2:24 PM Chen-Yu Tsai <wenst@chromium.org> wrote:
>
> On Tue, Sep 28, 2021 at 2:16 PM Sergey Senozhatsky
> <senozhatsky@chromium.org> wrote:
> >
> > We need to always link allocated vb2_dc_buf back to vb2_buffer because
> > we dereference vb2 in prepare() and finish() callbacks.
> >
> > Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
>
> This fixes the breakage from the "videobuf2: support new noncontiguous DMA
> API" series on the RK3399 Scarlet if the ChromeOS patch that changes
> min_buffers_needed to 0 [1] is not applied.
>
> Since there are other in-tree drivers that have min_buffers_needed=0,
> I would recommend getting some more testing.
Seems I had a stale kernel when testing the min_buffers_needed=0 case.
Everythings works now.
Tested-by: Chen-Yu Tsai <wenst@chromium.org>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] media: videobuf2: always set buffer vb2 pointer
2021-09-28 3:46 [PATCH] media: videobuf2: always set buffer vb2 pointer Sergey Senozhatsky
2021-09-28 6:24 ` Chen-Yu Tsai
@ 2021-10-05 9:57 ` Tomasz Figa
2021-10-12 1:57 ` Sergey Senozhatsky
1 sibling, 1 reply; 6+ messages in thread
From: Tomasz Figa @ 2021-10-05 9:57 UTC (permalink / raw)
To: Sergey Senozhatsky
Cc: Hans Verkuil, Marek Szyprowski, Mauro Carvalho Chehab,
Ricardo Ribalda, linux-media, linux-kernel
On Tue, Sep 28, 2021 at 12:46 PM Sergey Senozhatsky
<senozhatsky@chromium.org> wrote:
>
> We need to always link allocated vb2_dc_buf back to vb2_buffer because
> we dereference vb2 in prepare() and finish() callbacks.
>
> Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
> ---
> drivers/media/common/videobuf2/videobuf2-dma-contig.c | 3 +++
> 1 file changed, 3 insertions(+)
>
Acked-by: Tomasz Figa <tfiga@chromium.org>
Best regards,
Tomasz
> diff --git a/drivers/media/common/videobuf2/videobuf2-dma-contig.c b/drivers/media/common/videobuf2/videobuf2-dma-contig.c
> index b052a4e36961..38767791955d 100644
> --- a/drivers/media/common/videobuf2/videobuf2-dma-contig.c
> +++ b/drivers/media/common/videobuf2/videobuf2-dma-contig.c
> @@ -600,6 +600,7 @@ static void *vb2_dc_get_userptr(struct vb2_buffer *vb, struct device *dev,
>
> buf->dev = dev;
> buf->dma_dir = vb->vb2_queue->dma_dir;
> + buf->vb = vb;
>
> offset = lower_32_bits(offset_in_page(vaddr));
> vec = vb2_create_framevec(vaddr, size);
> @@ -788,6 +789,8 @@ static void *vb2_dc_attach_dmabuf(struct vb2_buffer *vb, struct device *dev,
> return ERR_PTR(-ENOMEM);
>
> buf->dev = dev;
> + buf->vb = vb;
> +
> /* create attachment for the dmabuf with the user device */
> dba = dma_buf_attach(dbuf, buf->dev);
> if (IS_ERR(dba)) {
> --
> 2.33.0.685.g46640cef36-goog
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] media: videobuf2: always set buffer vb2 pointer
2021-10-05 9:57 ` Tomasz Figa
@ 2021-10-12 1:57 ` Sergey Senozhatsky
2021-10-12 7:52 ` Hans Verkuil
0 siblings, 1 reply; 6+ messages in thread
From: Sergey Senozhatsky @ 2021-10-12 1:57 UTC (permalink / raw)
To: Hans Verkuil, Mauro Carvalho Chehab
Cc: Tomasz Figa, Sergey Senozhatsky, Marek Szyprowski,
Ricardo Ribalda, linux-media, linux-kernel
On (21/10/05 18:57), Tomasz Figa wrote:
>
> On Tue, Sep 28, 2021 at 12:46 PM Sergey Senozhatsky
> <senozhatsky@chromium.org> wrote:
> >
> > We need to always link allocated vb2_dc_buf back to vb2_buffer because
> > we dereference vb2 in prepare() and finish() callbacks.
> >
> > Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
> > ---
> > drivers/media/common/videobuf2/videobuf2-dma-contig.c | 3 +++
> > 1 file changed, 3 insertions(+)
> >
>
> Acked-by: Tomasz Figa <tfiga@chromium.org>
Hans, can you please pick up this patch?
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] media: videobuf2: always set buffer vb2 pointer
2021-10-12 1:57 ` Sergey Senozhatsky
@ 2021-10-12 7:52 ` Hans Verkuil
0 siblings, 0 replies; 6+ messages in thread
From: Hans Verkuil @ 2021-10-12 7:52 UTC (permalink / raw)
To: Sergey Senozhatsky, Mauro Carvalho Chehab
Cc: Tomasz Figa, Marek Szyprowski, Ricardo Ribalda, linux-media,
linux-kernel
On 12/10/2021 03:57, Sergey Senozhatsky wrote:
> On (21/10/05 18:57), Tomasz Figa wrote:
>>
>> On Tue, Sep 28, 2021 at 12:46 PM Sergey Senozhatsky
>> <senozhatsky@chromium.org> wrote:
>>>
>>> We need to always link allocated vb2_dc_buf back to vb2_buffer because
>>> we dereference vb2 in prepare() and finish() callbacks.
>>>
>>> Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
>>> ---
>>> drivers/media/common/videobuf2/videobuf2-dma-contig.c | 3 +++
>>> 1 file changed, 3 insertions(+)
>>>
>>
>> Acked-by: Tomasz Figa <tfiga@chromium.org>
>
> Hans, can you please pick up this patch?
>
Yes, it's already part of my upcoming pull request.
Hans
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2021-10-12 7:52 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-09-28 3:46 [PATCH] media: videobuf2: always set buffer vb2 pointer Sergey Senozhatsky
2021-09-28 6:24 ` Chen-Yu Tsai
2021-09-28 7:53 ` Chen-Yu Tsai
2021-10-05 9:57 ` Tomasz Figa
2021-10-12 1:57 ` Sergey Senozhatsky
2021-10-12 7:52 ` Hans Verkuil
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