From ece8913e70ed65b76da811c642071c83b1aae99b Mon Sep 17 00:00:00 2001 From: Ken Chalmers Date: Wed, 27 Jun 2018 12:48:21 -0400 Subject: [PATCH 4938/5725] drm/amd/display: Fix new stream count check in dc_add_stream_to_ctx [Why] The previous code could allow through attempts to enable more streams than there are timing generators, in designs where the number of pipes is greater than the number of timing generators. [How] Compare the new stream count to the resource pool's timing generator count, instead of its pipe count. Also correct a typo in the error message. Signed-off-by: Ken Chalmers Reviewed-by: Charlene Liu Acked-by: Harry Wentland Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c index c4c7e00..417d2bf 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c @@ -1707,8 +1707,8 @@ enum dc_status dc_add_stream_to_ctx( struct dc_context *dc_ctx = dc->ctx; enum dc_status res; - if (new_ctx->stream_count >= dc->res_pool->pipe_count) { - DC_ERROR("Max streams reached, can add stream %p !\n", stream); + if (new_ctx->stream_count >= dc->res_pool->timing_generator_count) { + DC_ERROR("Max streams reached, can't add stream %p !\n", stream); return DC_ERROR_UNEXPECTED; } -- 2.7.4