From: Tomi Valkeinen tomi.valkeinen@ti.com
Add omap_gem_unpin_locked() which is a version of omap_gem_unpin() that expects the caller to hold the omap_obj lock.
Signed-off-by: Tomi Valkeinen tomi.valkeinen@ti.com --- drivers/gpu/drm/omapdrm/omap_gem.c | 24 +++++++++++++++++------- 1 file changed, 17 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/omapdrm/omap_gem.c b/drivers/gpu/drm/omapdrm/omap_gem.c index 51ede7777083..9201c21e206f 100644 --- a/drivers/gpu/drm/omapdrm/omap_gem.c +++ b/drivers/gpu/drm/omapdrm/omap_gem.c @@ -834,20 +834,16 @@ int omap_gem_pin(struct drm_gem_object *obj, dma_addr_t *dma_addr) }
/** - * omap_gem_unpin() - Unpin a GEM object from memory + * omap_gem_unpin_locked() - Unpin a GEM object from memory * @obj: the GEM object * - * Unpin the given GEM object previously pinned with omap_gem_pin(). Pins are - * reference-counted, the actualy unpin will only be performed when the number - * of calls to this function matches the number of calls to omap_gem_pin(). + * omap_gem_unpin() without locking. */ -void omap_gem_unpin(struct drm_gem_object *obj) +static void omap_gem_unpin_locked(struct drm_gem_object *obj) { struct omap_gem_object *omap_obj = to_omap_bo(obj); int ret;
- mutex_lock(&omap_obj->lock); - if (refcount_dec_and_test(&omap_obj->dma_addr_cnt)) { ret = tiler_unpin(omap_obj->block); if (ret) { @@ -864,6 +860,20 @@ void omap_gem_unpin(struct drm_gem_object *obj) } }
+/** + * omap_gem_unpin() - Unpin a GEM object from memory + * @obj: the GEM object + * + * Unpin the given GEM object previously pinned with omap_gem_pin(). Pins are + * reference-counted, the actual unpin will only be performed when the number + * of calls to this function matches the number of calls to omap_gem_pin(). + */ +void omap_gem_unpin(struct drm_gem_object *obj) +{ + struct omap_gem_object *omap_obj = to_omap_bo(obj); + + mutex_lock(&omap_obj->lock); + omap_gem_unpin_locked(obj); mutex_unlock(&omap_obj->lock); }