Dereference dev_priv only after we know it is valid.
Found with smatch.
Signed-off-by: Mika Kuoppala <[email protected]>
---
drivers/gpu/drm/i915/i915_dma.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 1eea5be..2625248 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1071,7 +1071,7 @@ static int i915_set_status_page(struct drm_device *dev,
void *data,
{
drm_i915_private_t *dev_priv = dev->dev_private;
drm_i915_hws_addr_t *hws = data;
- struct intel_ring_buffer *ring = LP_RING(dev_priv);
+ struct intel_ring_buffer *ring;
if (drm_core_check_feature(dev, DRIVER_MODESET))
return -ENODEV;
@@ -1091,6 +1091,7 @@ static int i915_set_status_page(struct drm_device *dev,
void *data,
DRM_DEBUG_DRIVER("set status page addr 0x%08x\n", (u32)hws->addr);
+ ring = LP_RING(dev_priv);
ring->status_page.gfx_addr = hws->addr & (0x1ffff<<12);
dev_priv->dri1.gfx_hws_cpu_addr =
--
1.7.9.5
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