4.16-stable review patch. If anyone has any objections, please let me know.
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From: Laurent Pinchart laurent.pinchart+renesas@ideasonboard.com
[ Upstream commit 5e3e4cb5e24b92773b194aa90066170b12133bc6 ]
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 laurent.pinchart+renesas@ideasonboard.com Reviewed-by: Kieran Bingham kieran.bingham+renesas@ideasonboard.com Signed-off-by: Mauro Carvalho Chehab mchehab@s-opensource.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/media/platform/vsp1/vsp1_drm.c | 9 +++++++++ 1 file changed, 9 insertions(+)
--- 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 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;