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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/gpu/drm/vgem/vgem_fence.c
..
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@@ -21,7 +21,9 @@
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  */
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22
 
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 #include <linux/dma-buf.h>
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-#include <linux/reservation.h>
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+#include <linux/dma-resv.h>
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+
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+#include <drm/drm_file.h>
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27
 
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 #include "vgem_drv.h"
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29
 
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@@ -43,16 +45,6 @@
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 	return "unbound";
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 }
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-static bool vgem_fence_signaled(struct dma_fence *fence)
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-{
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-	return false;
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-}
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-
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-static bool vgem_fence_enable_signaling(struct dma_fence *fence)
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-{
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-	return true;
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-}
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-
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 static void vgem_fence_release(struct dma_fence *base)
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 {
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 	struct vgem_fence *fence = container_of(base, typeof(*fence), base);
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@@ -63,22 +55,19 @@
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55
 
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 static void vgem_fence_value_str(struct dma_fence *fence, char *str, int size)
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 {
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-	snprintf(str, size, "%u", fence->seqno);
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+	snprintf(str, size, "%llu", fence->seqno);
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 }
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 static void vgem_fence_timeline_value_str(struct dma_fence *fence, char *str,
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 					  int size)
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 {
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-	snprintf(str, size, "%u",
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+	snprintf(str, size, "%llu",
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 		 dma_fence_is_signaled(fence) ? fence->seqno : 0);
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 }
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 static const struct dma_fence_ops vgem_fence_ops = {
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 	.get_driver_name = vgem_fence_get_driver_name,
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 	.get_timeline_name = vgem_fence_get_timeline_name,
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-	.enable_signaling = vgem_fence_enable_signaling,
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-	.signaled = vgem_fence_signaled,
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-	.wait = dma_fence_default_wait,
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 	.release = vgem_fence_release,
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 	.fence_value_str = vgem_fence_value_str,
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@@ -113,22 +102,6 @@
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 	return &fence->base;
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 }
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-static int attach_dmabuf(struct drm_device *dev,
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-			 struct drm_gem_object *obj)
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-{
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-	struct dma_buf *dmabuf;
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-
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-	if (obj->dma_buf)
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-		return 0;
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-
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-	dmabuf = dev->driver->gem_prime_export(dev, obj, 0);
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-	if (IS_ERR(dmabuf))
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-		return PTR_ERR(dmabuf);
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-
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-	obj->dma_buf = dmabuf;
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-	return 0;
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-}
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-
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 /*
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  * vgem_fence_attach_ioctl (DRM_IOCTL_VGEM_FENCE_ATTACH):
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  *
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@@ -155,7 +128,7 @@
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 {
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 	struct drm_vgem_fence_attach *arg = data;
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 	struct vgem_file *vfile = file->driver_priv;
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-	struct reservation_object *resv;
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+	struct dma_resv *resv;
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 	struct drm_gem_object *obj;
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 	struct dma_fence *fence;
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 	int ret;
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@@ -170,10 +143,6 @@
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 	if (!obj)
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 		return -ENOENT;
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-	ret = attach_dmabuf(dev, obj);
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-	if (ret)
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-		goto err;
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-
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 	fence = vgem_fence_create(vfile, arg->flags);
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 	if (!fence) {
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 		ret = -ENOMEM;
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@@ -181,8 +150,8 @@
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 	}
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 	/* Check for a conflicting fence */
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-	resv = obj->dma_buf->resv;
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-	if (!reservation_object_test_signaled_rcu(resv,
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+	resv = obj->resv;
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+	if (!dma_resv_test_signaled_rcu(resv,
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 						  arg->flags & VGEM_FENCE_WRITE)) {
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 		ret = -EBUSY;
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 		goto err_fence;
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@@ -190,12 +159,12 @@
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 	/* Expose the fence via the dma-buf */
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 	ret = 0;
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-	reservation_object_lock(resv, NULL);
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+	dma_resv_lock(resv, NULL);
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 	if (arg->flags & VGEM_FENCE_WRITE)
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-		reservation_object_add_excl_fence(resv, fence);
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-	else if ((ret = reservation_object_reserve_shared(resv)) == 0)
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-		reservation_object_add_shared_fence(resv, fence);
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-	reservation_object_unlock(resv);
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+		dma_resv_add_excl_fence(resv, fence);
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+	else if ((ret = dma_resv_reserve_shared(resv, 1)) == 0)
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+		dma_resv_add_shared_fence(resv, fence);
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+	dma_resv_unlock(resv);
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 	/* Record the fence in our idr for later signaling */
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 	if (ret == 0) {
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@@ -213,7 +182,7 @@
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 		dma_fence_put(fence);
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 	}
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 err:
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-	drm_gem_object_put_unlocked(obj);
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+	drm_gem_object_put(obj);
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 	return ret;
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 }
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