Commit 1af10a97 authored by José Roberto de Souza's avatar José Roberto de Souza
Browse files

drm/i915/display: Add warn_on in intel_psr_pause() 



Right now the only user of psr_pause/resume is intel_cdclk but
additional users will be added in the future and we may need
do reference counting for PSR pause and resume, for now only adding a
warn_on so this cases do not go unnoticed.

Cc: Mika Kahola <mika.kahola@intel.com>
Cc: Jouni Hogander <jouni.hogander@intel.com>
Cc: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Signed-off-by: default avatarJosé Roberto de Souza <jose.souza@intel.com>
Reviewed-by: default avatarMika Kahola <mika.kahola@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211020003558.222198-2-jose.souza@intel.com
parent 808b79eb

drivers/gpu/drm/i915/display/intel_psr.c

+4 −0
Original line number Diff line number Diff line
@@ -1346,6 +1346,7 @@ void intel_psr_disable(struct intel_dp *intel_dp, 
 */

void intel_psr_pause(struct intel_dp *intel_dp)

{

	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);

	struct intel_psr *psr = &intel_dp->psr;



	if (!CAN_PSR(intel_dp))
@@ -1358,6 +1359,9 @@ void intel_psr_pause(struct intel_dp *intel_dp) 
		return;

	}



	/* If we ever hit this, we will need to add refcount to pause/resume */

	drm_WARN_ON(&dev_priv->drm, psr->paused);



	intel_psr_exit(intel_dp);

	intel_psr_wait_exit_locked(intel_dp);

	psr->paused = true;