drm/msm/gem: Split out inuse helper

Prep for a following patch, where it gets a bit more complicated.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20220411215849.297838-5-robdclark@gmail.comSigned-off-by: Rob Clark <robdclark@chromium.org>

drivers/gpu/drm/msm/msm_gem.c

@@ -937,7 +937,7 @@ void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m,
 				name, comm ? ":" : "", comm ? comm : "",
 				vma->aspace, vma->iova,
 				vma->mapped ? "mapped" : "unmapped",
-				vma->inuse);
+				msm_gem_vma_inuse(vma));
 			kfree(comm);
 		}
 

drivers/gpu/drm/msm/msm_gem.h

@@ -61,6 +61,7 @@ struct msm_gem_vma {
 int msm_gem_init_vma(struct msm_gem_address_space *aspace,
 		struct msm_gem_vma *vma, int npages,
 		u64 range_start, u64 range_end);
+bool msm_gem_vma_inuse(struct msm_gem_vma *vma);
 void msm_gem_purge_vma(struct msm_gem_address_space *aspace,
 		struct msm_gem_vma *vma);
 void msm_gem_unmap_vma(struct msm_gem_address_space *aspace,

drivers/gpu/drm/msm/msm_gem_vma.c

@@ -37,6 +37,11 @@ msm_gem_address_space_get(struct msm_gem_address_space *aspace)
 	return aspace;
 }
 
+bool msm_gem_vma_inuse(struct msm_gem_vma *vma)
+{
+	return !!vma->inuse;
+}
+
 /* Actually unmap memory for the vma */
 void msm_gem_purge_vma(struct msm_gem_address_space *aspace,
 		struct msm_gem_vma *vma)
@@ -44,7 +49,7 @@ void msm_gem_purge_vma(struct msm_gem_address_space *aspace,
 	unsigned size = vma->node.size << PAGE_SHIFT;
 
 	/* Print a message if we try to purge a vma in use */
-	if (GEM_WARN_ON(vma->inuse > 0))
+	if (GEM_WARN_ON(msm_gem_vma_inuse(vma)))
 		return;
 
 	/* Don't do anything if the memory isn't mapped */
@@ -100,7 +105,7 @@ msm_gem_map_vma(struct msm_gem_address_space *aspace,
 void msm_gem_close_vma(struct msm_gem_address_space *aspace,
 		struct msm_gem_vma *vma)
 {
-	if (GEM_WARN_ON(vma->inuse > 0 || vma->mapped))
+	if (GEM_WARN_ON(msm_gem_vma_inuse(vma) || vma->mapped))
 		return;
 
 	spin_lock(&aspace->lock);