6.8-stable review patch. If anyone has any objections, please let me know.
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From: Chris Park chris.park@amd.com
commit 72d72e8fddbcd6c98e1b02d32cf6f2b04e10bd1c upstream.
[Why] Disabling stream encoder invokes a function that no longer exists.
[How] Check if the function declaration is NULL in disable stream encoder.
Cc: Mario Limonciello mario.limonciello@amd.com Cc: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org Reviewed-by: Charlene Liu charlene.liu@amd.com Acked-by: Wayne Lin wayne.lin@amd.com Signed-off-by: Chris Park chris.park@amd.com Tested-by: Daniel Wheeler daniel.wheeler@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c @@ -1185,7 +1185,8 @@ void dce110_disable_stream(struct pipe_c if (dccg) { dccg->funcs->disable_symclk32_se(dccg, dp_hpo_inst); dccg->funcs->set_dpstreamclk(dccg, REFCLK, tg->inst, dp_hpo_inst); - dccg->funcs->set_dtbclk_dto(dccg, &dto_params); + if (dccg && dccg->funcs->set_dtbclk_dto) + dccg->funcs->set_dtbclk_dto(dccg, &dto_params); } } else if (dccg && dccg->funcs->disable_symclk_se) { dccg->funcs->disable_symclk_se(dccg, stream_enc->stream_enc_inst,