Hi Laurent,
As this is a prevents hardware hangs, and is a distinct patch on it's own - I
feel it should be on an accelerated path to integration, and should be merged
separately from the rest of the CRC feature series.
On 03/12/17 10:57, Laurent Pinchart wrote:
> Make sure we don't accept more inputs than the hardware can handle. This
> is a temporary fix to avoid display stall, we need to instead allocate
> the BRU or BRS to display pipelines dynamically based on the number of
> planes they each use.
>
> Signed-off-by: Laurent Pinchart
Reviewed-by: Kieran Bingham
> ---
> drivers/media/platform/vsp1/vsp1_drm.c | 9 +
> 1 file changed, 9 insertions(+)
>
> diff --git a/drivers/media/platform/vsp1/vsp1_drm.c
> b/drivers/media/platform/vsp1/vsp1_drm.c
> index 7ce69f23f50a..ac85942162c1 100644
> --- a/drivers/media/platform/vsp1/vsp1_drm.c
> +++ b/drivers/media/platform/vsp1/vsp1_drm.c
> @@ -530,6 +530,15 @@ void vsp1_du_atomic_flush(struct device *dev, unsigned
> int pipe_index)
> struct vsp1_rwpf *rpf = vsp1->rpf[i];
> unsigned int j;
>
> + /*
> + * Make sure we don't accept more inputs than the hardware can
> + * handle. This is a temporary fix to avoid display stall, we
> + * need to instead allocate the BRU or BRS to display pipelines
> + * dynamically based on the number of planes they each use.
> + */
> + if (pipe->num_inputs >= pipe->bru->source_pad)
> + pipe->inputs[i] = NULL;
> +
> if (!pipe->inputs[i])
> continue;
>
>
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