From: Daniel Vetter Date: Mon, 26 Mar 2012 20:37:04 +0000 (+0200) Subject: drm/i915: disallow gem init ioctl on ilk X-Git-Tag: firefly_0821_release~3680^2~2315^2~115^2~5 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f534bc0b2212f3dc317bdaea5dfff13526f2ac17;p=firefly-linux-kernel-4.4.55.git drm/i915: disallow gem init ioctl on ilk Ums is already disabled, but on ilk we can additionally disable gem initialization when using user mode setting. Upstream never support ilk without kernel modesetting and not even the RHEL ilk ums backport needs gem - that driver is based on xf86-video-intel version 2.2, which is pre-gem. Reviewed-by: Adam Jackson Reviewed-by: Chris Wilson Signed-Off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 54ca125a405d..759daa491ab5 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -129,6 +129,10 @@ i915_gem_init_ioctl(struct drm_device *dev, void *data, (args->gtt_end | args->gtt_start) & (PAGE_SIZE - 1)) return -EINVAL; + /* GEM with user mode setting was never supported on ilk and later. */ + if (INTEL_INFO(dev)->gen >= 5) + return -ENODEV; + mutex_lock(&dev->struct_mutex); i915_gem_init_global_gtt(dev, args->gtt_start, args->gtt_end, args->gtt_end);