[PATCH 7/9] drm/i915/guc: Grab RPM wakelock while disabling GuC interrupts

[Sagar Arun Kamble]

From: "Kamble, Sagar A" <sagar.a.kamble at intel.com>

Disabling GuC interrupts involves access to GuC IRQ control registers
hence ensure device is RPM awake.

Cc: Michal Wajdeczko <michal.wajdeczko at intel.com>
Signed-off-by: Sagar Arun Kamble <sagar.a.kamble at intel.com>
---
 drivers/gpu/drm/i915/intel_guc_log.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_guc_log.c b/drivers/gpu/drm/i915/intel_guc_log.c
index 4d17f92..94faf44 100644
--- a/drivers/gpu/drm/i915/intel_guc_log.c
+++ b/drivers/gpu/drm/i915/intel_guc_log.c
@@ -661,8 +661,11 @@ void i915_guc_log_unregister(struct drm_i915_private *dev_priv)
 		return;
 
 	mutex_lock(&dev_priv->drm.struct_mutex);
+	intel_runtime_pm_get(dev_priv);
 	/* GuC logging is currently the only user of Guc2Host interrupts */
 	intel_disable_guc_interrupts(guc);
+	intel_runtime_pm_put(dev_priv);
+
 	i915_modparams.guc_log_level = -1;
 	guc_log_runtime_destroy(guc);
 	mutex_unlock(&dev_priv->drm.struct_mutex);
-- 
1.9.1