drm/i915: add FBC_IN_DBG_MASTER no_fbc_reason

The poor in_dbg_master() check was the only one without a reason
string. Give it a reason string so it won't feel excluded.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 4ef1764..52d07fb 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -935,6 +935,7 @@ struct i915_fbc {
                FBC_MODULE_PARAM,
                FBC_CHIP_DEFAULT, /* disabled by default on this chip */
                FBC_ROTATION, /* rotation is not supported */
+               FBC_IN_DBG_MASTER, /* kernel debugger is active */
        } no_fbc_reason;
 
        bool (*fbc_enabled)(struct drm_i915_private *dev_priv);

diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c
index 9ef5b6c..8d39893 100644 (file)
--- a/drivers/gpu/drm/i915/intel_fbc.c
+++ b/drivers/gpu/drm/i915/intel_fbc.c
@@ -471,6 +471,8 @@ const char *intel_no_fbc_reason_str(enum no_fbc_reason reason)
                return "disabled per chip default";
        case FBC_ROTATION:
                return "rotation unsupported";
+       case FBC_IN_DBG_MASTER:
+               return "Kernel debugger is active";
        default:
                MISSING_CASE(reason);
                return "unknown reason";
@@ -755,8 +757,10 @@ static void __intel_fbc_update(struct drm_i915_private *dev_priv)
        }
 
        /* If the kernel debugger is active, always disable compression */
-       if (in_dbg_master())
+       if (in_dbg_master()) {
+               set_no_fbc_reason(dev_priv, FBC_IN_DBG_MASTER);
                goto out_disable;
+       }
 
        if (intel_fbc_setup_cfb(dev_priv, obj->base.size,
                                drm_format_plane_cpp(fb->pixel_format, 0))) {