diff options
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/i915/pxp/intel_pxp.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp.c b/drivers/gpu/drm/i915/pxp/intel_pxp.c index 15311eaed848..17109c513259 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp.c +++ b/drivers/gpu/drm/i915/pxp/intel_pxp.c @@ -176,6 +176,18 @@ static void pxp_queue_termination(struct intel_pxp *pxp) spin_unlock_irq(>->irq_lock); } +static bool pxp_component_bound(struct intel_pxp *pxp) +{ + bool bound = false; + + mutex_lock(&pxp->tee_mutex); + if (pxp->pxp_component) + bound = true; + mutex_unlock(&pxp->tee_mutex); + + return bound; +} + /* * the arb session is restarted from the irq work when we receive the * termination completion interrupt @@ -187,6 +199,9 @@ int intel_pxp_start(struct intel_pxp *pxp) if (!intel_pxp_is_enabled(pxp)) return -ENODEV; + if (wait_for(pxp_component_bound(pxp), 250)) + return -ENXIO; + mutex_lock(&pxp->arb_mutex); if (pxp->arb_is_valid) |