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drm/i915: check i915_get_reset_stats_ioctl args

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Insist that flags and pad fields are zero, so that
we can safely extend the interface in future.

Testcase: igt/gem_reset_stats/params

Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Mika Kuoppala 2013-11-12 19:49:35 +02:00 committed by Daniel Vetter
parent b53c8c3577
commit 661df0415e
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/i915/intel_uncore.c
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@ -641,6 +641,9 @@ int i915_get_reset_stats_ioctl(struct drm_device *dev,
struct i915_ctx_hang_stats *hs;
int ret;
if (args->flags || args->pad)
return -EINVAL;
if (args->ctx_id == DEFAULT_CONTEXT_ID && !capable(CAP_SYS_ADMIN))
return -EPERM;