diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_wakeref.h')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_wakeref.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_wakeref.h b/drivers/gpu/drm/i915/intel_wakeref.h index 9cbb2ebf575b..d45e78639dc4 100644 --- a/drivers/gpu/drm/i915/intel_wakeref.h +++ b/drivers/gpu/drm/i915/intel_wakeref.h @@ -13,6 +13,12 @@ #include <linux/stackdepot.h> #include <linux/timer.h> +#if IS_ENABLED(CONFIG_DRM_I915_DEBUG) +#define INTEL_WAKEREF_BUG_ON(expr) BUG_ON(expr) +#else +#define INTEL_WAKEREF_BUG_ON(expr) BUILD_BUG_ON_INVALID(expr) +#endif + struct intel_runtime_pm; typedef depot_stack_handle_t intel_wakeref_t; @@ -86,6 +92,7 @@ intel_wakeref_put(struct intel_runtime_pm *rpm, struct intel_wakeref *wf, int (*fn)(struct intel_wakeref *wf)) { + INTEL_WAKEREF_BUG_ON(atomic_read(&wf->count) <= 0); if (atomic_dec_and_mutex_lock(&wf->count, &wf->mutex)) return __intel_wakeref_put_last(rpm, wf, fn); |