On Tue, Sep 28, 2021 at 2:24 PM Chen-Yu Tsai <wenst@xxxxxxxxxxxx> wrote: > > On Tue, Sep 28, 2021 at 2:16 PM Sergey Senozhatsky > <senozhatsky@xxxxxxxxxxxx> 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@xxxxxxxxxxxx> > > 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@xxxxxxxxxxxx>
