From: Imre Deak Date: Thu, 14 May 2020 20:45:53 +0000 (+0300) Subject: drm/i915: Fix AUX power domain toggling across TypeC mode resets X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=ae9b6cfe1352da25931bce3ea4acfd4dc1ac8a85;p=kernel.git drm/i915: Fix AUX power domain toggling across TypeC mode resets Make sure to select the port's AUX power domain while holding the TC port lock. The domain depends on the port's current TC mode, which may get changed under us if we're not holding the lock. This was left out from commit 8c10e2262663 ("drm/i915: Keep the TypeC port mode fixed for detect/AUX transfers") Cc: # v5.4+ Signed-off-by: Imre Deak Reviewed-by: José Roberto de Souza Link: https://patchwork.freedesktop.org/patch/msgid/20200514204553.27193-1-imre.deak@intel.com --- diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 408c3c1c5e811..40d42dcff0b7d 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -1359,8 +1359,7 @@ intel_dp_aux_xfer(struct intel_dp *intel_dp, bool is_tc_port = intel_phy_is_tc(i915, phy); i915_reg_t ch_ctl, ch_data[5]; u32 aux_clock_divider; - enum intel_display_power_domain aux_domain = - intel_aux_power_domain(intel_dig_port); + enum intel_display_power_domain aux_domain; intel_wakeref_t aux_wakeref; intel_wakeref_t pps_wakeref; int i, ret, recv_bytes; @@ -1375,6 +1374,8 @@ intel_dp_aux_xfer(struct intel_dp *intel_dp, if (is_tc_port) intel_tc_port_lock(intel_dig_port); + aux_domain = intel_aux_power_domain(intel_dig_port); + aux_wakeref = intel_display_power_get(i915, aux_domain); pps_wakeref = pps_lock(intel_dp);