drm/i915: rip out GEM drm feature checks

We always set it so there's no point in checking. We could
instead add a bit that tells us whether gem is actually
initialized (i.e. either kms or gem_init_ioctl called), but
that's imho not worth it.

So just rip it out.

There's a little change in the wait_ring timeout, but we've never
run with anything else than the 60 second timeout, even on dri1
userspace.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

2 files changed, 7 insertions, 27 deletions

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 1b808d041949..0d53eacd293f 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -168,9 +168,6 @@ i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data,
         struct drm_i915_gem_object *obj;
         size_t pinned;
 
-        if (!(dev->driver->driver_features & DRIVER_GEM))
-                return -ENODEV;
-
         pinned = 0;
         mutex_lock(&dev->struct_mutex);
         list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list)
@@ -246,6 +243,7 @@ i915_gem_create_ioctl(struct drm_device *dev, void *data,
                       struct drm_file *file)
 {
         struct drm_i915_gem_create *args = data;
+
         return i915_gem_create(file, dev,
                                args->size, &args->handle);
 }
@@ -931,9 +929,6 @@ i915_gem_set_domain_ioctl(struct drm_device *dev, void *data,
         uint32_t write_domain = args->write_domain;
         int ret;
 
-        if (!(dev->driver->driver_features & DRIVER_GEM))
-                return -ENODEV;
-
         /* Only handle setting domains to types used by the CPU. */
         if (write_domain & I915_GEM_GPU_DOMAINS)
                 return -EINVAL;
@@ -987,9 +982,6 @@ i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data,
         struct drm_i915_gem_object *obj;
         int ret = 0;
 
-        if (!(dev->driver->driver_features & DRIVER_GEM))
-                return -ENODEV;
-
         ret = i915_mutex_lock_interruptible(dev);
         if (ret)
                 return ret;
@@ -1025,9 +1017,6 @@ i915_gem_mmap_ioctl(struct drm_device *dev, void *data,
         struct drm_gem_object *obj;
         unsigned long addr;
 
-        if (!(dev->driver->driver_features & DRIVER_GEM))
-                return -ENODEV;
-
         obj = drm_gem_object_lookup(dev, file, args->handle);
         if (obj == NULL)
                 return -ENOENT;
@@ -1255,9 +1244,6 @@ i915_gem_mmap_gtt(struct drm_file *file,
         struct drm_i915_gem_object *obj;
         int ret;
 
-        if (!(dev->driver->driver_features & DRIVER_GEM))
-                return -ENODEV;
-
         ret = i915_mutex_lock_interruptible(dev);
         if (ret)
                 return ret;
@@ -1315,9 +1301,6 @@ i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data,
 {
         struct drm_i915_gem_mmap_gtt *args = data;
 
-        if (!(dev->driver->driver_features & DRIVER_GEM))
-                return -ENODEV;
-
         return i915_gem_mmap_gtt(file, dev, args->handle, &args->offset);
 }
 
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index b7f446ee28da..427b7c55ffe0 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1164,15 +1164,12 @@ int intel_wait_ring_buffer(struct intel_ring_buffer *ring, int n)
                 return ret;
 
         trace_i915_ring_wait_begin(ring);
-        if (drm_core_check_feature(dev, DRIVER_GEM))
-                /* With GEM the hangcheck timer should kick us out of the loop,
-                 * leaving it early runs the risk of corrupting GEM state (due
-                 * to running on almost untested codepaths). But on resume
-                 * timers don't work yet, so prevent a complete hang in that
-                 * case by choosing an insanely large timeout. */
-                end = jiffies + 60 * HZ;
-        else
-                end = jiffies + 3 * HZ;
+        /* With GEM the hangcheck timer should kick us out of the loop,
+         * leaving it early runs the risk of corrupting GEM state (due
+         * to running on almost untested codepaths). But on resume
+         * timers don't work yet, so prevent a complete hang in that
+         * case by choosing an insanely large timeout. */
+        end = jiffies + 60 * HZ;
 
         do {
                 ring->head = I915_READ_HEAD(ring);