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    Subject[PATCH 14/52] drm/i915: Permit pinning whilst the device is 'suspended'
    Date
    From: Chris Wilson <chris@chris-wilson.co.uk>

    commit e3d8affb0d2d95f2da61e30ce86b33177feb91e8 upstream.

    As pinning (allocating and binding GTT memory) does not actually invoke
    GPU commands, it is safe, and indeed is attempted, during resumption
    from suspension:

    [drm:intel_init_clock_gating] *ERROR* failed to pin power context: -16

    Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
    Reported-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>
    Signed-off-by: Eric Anholt <eric@anholt.net>
    Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
    ---
    drivers/gpu/drm/i915/i915_gem.c | 3 ---
    1 files changed, 0 insertions(+), 3 deletions(-)

    diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
    index 2e10b9a..3d75c67 100644
    --- a/drivers/gpu/drm/i915/i915_gem.c
    +++ b/drivers/gpu/drm/i915/i915_gem.c
    @@ -2571,9 +2571,6 @@ i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, unsigned alignment)
    bool retry_alloc = false;
    int ret;

    - if (dev_priv->mm.suspended)
    - return -EBUSY;
    -
    if (obj_priv->madv != I915_MADV_WILLNEED) {
    DRM_ERROR("Attempting to bind a purgeable object\n");
    return -EINVAL;
    --
    1.6.6


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