diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_wakeref.h')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_wakeref.h | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_wakeref.h b/drivers/gpu/drm/i915/intel_wakeref.h index da6e8fd506e6..8d945db94b7a 100644 --- a/drivers/gpu/drm/i915/intel_wakeref.h +++ b/drivers/gpu/drm/i915/intel_wakeref.h @@ -59,9 +59,7 @@ void __intel_wakeref_put_last(struct intel_wakeref *wf, unsigned long flags); /** * intel_wakeref_get: Acquire the wakeref - * @i915: the drm_i915_private device * @wf: the wakeref - * @fn: callback for acquired the wakeref, called only on first acquire. * * Acquire a hold on the wakeref. The first user to do so, will acquire * the runtime pm wakeref and then call the @fn underneath the wakeref @@ -76,6 +74,7 @@ void __intel_wakeref_put_last(struct intel_wakeref *wf, unsigned long flags); static inline int intel_wakeref_get(struct intel_wakeref *wf) { + might_sleep(); if (unlikely(!atomic_inc_not_zero(&wf->count))) return __intel_wakeref_get_first(wf); @@ -83,6 +82,22 @@ intel_wakeref_get(struct intel_wakeref *wf) } /** + * __intel_wakeref_get: Acquire the wakeref, again + * @wf: the wakeref + * + * Increment the wakeref counter, only valid if it is already held by + * the caller. + * + * See intel_wakeref_get(). + */ +static inline void +__intel_wakeref_get(struct intel_wakeref *wf) +{ + INTEL_WAKEREF_BUG_ON(atomic_read(&wf->count) <= 0); + atomic_inc(&wf->count); +} + +/** * intel_wakeref_get_if_in_use: Acquire the wakeref * @wf: the wakeref * |