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| author | Michał Winiarski <michal.winiarski@intel.com> | 2017-01-20 20:23:46 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-01-20 19:59:53 +0000 |
| commit | 7e8d12bc733fc9deeb5d78140cda169030fa2ac5 (patch) | |
| tree | e4b5c7b41444ac77941f74ef55c2adf402ec76c5 /drivers/gpu/drm/i915/intel_huc.c | |
| parent | 7e79a6836cfd1bac20e2be3fafdc3caca27c9d69 (diff) | |
| download | talos-op-linux-7e8d12bc733fc9deeb5d78140cda169030fa2ac5.tar.gz talos-op-linux-7e8d12bc733fc9deeb5d78140cda169030fa2ac5.zip | |
drm/i915/huc: Avoid attempting to authenticate non-existent fw
HuC authentication is called even if HuC firmware is not present in the
system, leading to NULL ptr dereference on not allocated gem_object.
Let's avoid trying to authenticate HuC if its firmware is not loaded
successfully.
Fixes: dac84a388528 ("drm/i915/huc: Support HuC authentication")
v2: Check inside the auth function, split the assert (Michał)
v3: Oops, hit send before compiling, s/huc_fw/huc->fw
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Cc: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170120192348.2049-1-michal.winiarski@intel.com
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_huc.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_huc.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_huc.c b/drivers/gpu/drm/i915/intel_huc.c index 897ef31d865e..5edd4f7c3c60 100644 --- a/drivers/gpu/drm/i915/intel_huc.c +++ b/drivers/gpu/drm/i915/intel_huc.c @@ -299,6 +299,9 @@ void intel_guc_auth_huc(struct drm_i915_private *dev_priv) int ret; u32 data[2]; + if (huc->fw.load_status != INTEL_UC_FIRMWARE_SUCCESS) + return; + vma = i915_gem_object_ggtt_pin(huc->fw.obj, NULL, 0, 0, PIN_OFFSET_BIAS | GUC_WOPCM_TOP); if (IS_ERR(vma)) { |
