diff options
| author | Tina Zhang <tina.zhang@intel.com> | 2020-02-25 13:35:26 +0800 |
|---|---|---|
| committer | Zhenyu Wang <zhenyuw@linux.intel.com> | 2020-02-25 16:13:04 +0800 |
| commit | a8bb49b64c4f4284fb36169bdd9fc6efd62eb26a (patch) | |
| tree | b3a2fc4ae8bd725537492526b537b7f162e697f6 /drivers/gpu/drm/i915/gvt/mmio_context.c | |
| parent | 12d5861973c70fb9a890d81d051de1cb1886eeee (diff) | |
drm/i915/gvt: Fix drm_WARN issue where vgpu ptr is unavailable
When vgpu ptr is unavailable, the drm_WARN* can hang the whole system
due to the drm pointer is NULL. This patch fixes this issue by using
WARN directly which won't care about the drm pointer.
Fixes: 12d5861973c70 ("drm/i915/gvt: Make WARN* drm specific where vgpu ptr is available")
Signed-off-by: Tina Zhang <tina.zhang@intel.com>
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20200225053527.8336-1-tina.zhang@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/gvt/mmio_context.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/mmio_context.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/gvt/mmio_context.c b/drivers/gpu/drm/i915/gvt/mmio_context.c index 46c291e4926b..1213c8e23317 100644 --- a/drivers/gpu/drm/i915/gvt/mmio_context.c +++ b/drivers/gpu/drm/i915/gvt/mmio_context.c @@ -392,7 +392,6 @@ static void handle_tlb_pending_event(struct intel_vgpu *vgpu, int ring_id) static void switch_mocs(struct intel_vgpu *pre, struct intel_vgpu *next, int ring_id) { - struct drm_i915_private *i915 = pre->gvt->dev_priv; struct drm_i915_private *dev_priv; i915_reg_t offset, l3_offset; u32 old_v, new_v; @@ -407,7 +406,7 @@ static void switch_mocs(struct intel_vgpu *pre, struct intel_vgpu *next, int i; dev_priv = pre ? pre->gvt->dev_priv : next->gvt->dev_priv; - if (drm_WARN_ON(&i915->drm, ring_id >= ARRAY_SIZE(regs))) + if (drm_WARN_ON(&dev_priv->drm, ring_id >= ARRAY_SIZE(regs))) return; if (ring_id == RCS0 && IS_GEN(dev_priv, 9)) @@ -552,10 +551,9 @@ static void switch_mmio(struct intel_vgpu *pre, void intel_gvt_switch_mmio(struct intel_vgpu *pre, struct intel_vgpu *next, int ring_id) { - struct drm_i915_private *i915 = pre->gvt->dev_priv; struct drm_i915_private *dev_priv; - if (drm_WARN_ON(&i915->drm, !pre && !next)) + if (WARN(!pre && !next, "switch ring %d from host to HOST\n", ring_id)) return; gvt_dbg_render("switch ring %d from %s to %s\n", ring_id, |