From: Imre Deak <[email protected]> An AUX access failure during HPD IRQ handling should be handled by falling back to a full connector detection, ensure that if the failure happens while reading/acking a link service IRQ.
Signed-off-by: Imre Deak <[email protected]> --- drivers/gpu/drm/i915/display/intel_dp.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 613fb0cd08b78..208b1027aeca8 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -5809,12 +5809,15 @@ static bool intel_dp_check_link_service_irq(struct intel_dp *intel_dp) return false; if (drm_dp_dpcd_readb(&intel_dp->aux, - DP_LINK_SERVICE_IRQ_VECTOR_ESI0, &val) != 1 || !val) + DP_LINK_SERVICE_IRQ_VECTOR_ESI0, &val) != 1) + return true; + + if (!val) return false; if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_LINK_SERVICE_IRQ_VECTOR_ESI0, val) != 1) - return false; + return true; if (val & RX_CAP_CHANGED) reprobe_needed = true; -- 2.49.1
