[Intel-gfx] [PATCH] Revert "drm/i915: disable set/get_tiling ioctl on gen12+"

[Vanshidhar Konda]

On Thu, Nov 21, 2019 at 06:11:01PM +0000, Chris Wilson wrote:
>Restore the DRI2/DRI3 uABI backchannel that was removed by ab016914984e
>("drm/i915: disable set/get_tiling ioctl on gen12+") before the ABI
>change was agreed upon.
>
>Fixes: ab016914984e ("drm/i915: disable set/get_tiling ioctl on gen12+")
>Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
>Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>

Acked-by: Vanshidhar Konda <vanshidhar.r.konda at intel.com>

>---
> drivers/gpu/drm/i915/gem/i915_gem_tiling.c | 7 -------
> 1 file changed, 7 deletions(-)
>
>diff --git a/drivers/gpu/drm/i915/gem/i915_gem_tiling.c b/drivers/gpu/drm/i915/gem/i915_gem_tiling.c
>index 1fa592d82af5..39f3bd5defd6 100644
>--- a/drivers/gpu/drm/i915/gem/i915_gem_tiling.c
>+++ b/drivers/gpu/drm/i915/gem/i915_gem_tiling.c
>@@ -317,14 +317,10 @@ int
> i915_gem_set_tiling_ioctl(struct drm_device *dev, void *data,
> 			  struct drm_file *file)
> {
>-	struct drm_i915_private *dev_priv = to_i915(dev);
> 	struct drm_i915_gem_set_tiling *args = data;
> 	struct drm_i915_gem_object *obj;
> 	int err;
>
>-	if (!dev_priv->ggtt.num_fences)
>-		return -EOPNOTSUPP;
>-
> 	obj = i915_gem_object_lookup(file, args->handle);
> 	if (!obj)
> 		return -ENOENT;
>@@ -405,9 +401,6 @@ i915_gem_get_tiling_ioctl(struct drm_device *dev, void *data,
> 	struct drm_i915_gem_object *obj;
> 	int err = -ENOENT;
>
>-	if (!dev_priv->ggtt.num_fences)
>-		return -EOPNOTSUPP;
>-
> 	rcu_read_lock();
> 	obj = i915_gem_object_lookup_rcu(file, args->handle);
> 	if (obj) {
>-- 
>2.24.0
>
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