tree: git://anongit.freedesktop.org/drm-intel drm-intel-next-queued
head: 4bb6a9d5d9a8289673c4cb0786d44be8a63c21db
commit: 6b97b118d4d542c7bc25b725c6de3947fffb921b [6/7] drm/i915/display: Extract ilk_read_luts()
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@xxxxxxxxx>
New smatch warnings:
drivers/gpu/drm/i915/display/intel_color.c:1576 ilk_read_lut_10() error: potential null dereference 'blob'. (drm_property_create_blob returns null)
Old smatch warnings:
drivers/gpu/drm/i915/display/intel_color.c:1535 i9xx_read_lut_8() error: potential null dereference 'blob'. (drm_property_create_blob returns null)
vim +/blob +1576 drivers/gpu/drm/i915/display/intel_color.c
1558
1559 static struct drm_property_blob *
1560 ilk_read_lut_10(const struct intel_crtc_state *crtc_state)
1561 {
1562 struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
1563 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
1564 u32 lut_size = INTEL_INFO(dev_priv)->color.gamma_lut_size;
1565 enum pipe pipe = crtc->pipe;
1566 struct drm_property_blob *blob;
1567 struct drm_color_lut *blob_data;
1568 u32 i, val;
1569
1570 blob = drm_property_create_blob(&dev_priv->drm,
1571 sizeof(struct drm_color_lut) * lut_size,
1572 NULL);
1573 if (IS_ERR(blob))
1574 return NULL;
1575
> 1576 blob_data = blob->data;
1577
1578 for (i = 0; i < lut_size; i++) {
1579 val = I915_READ(PREC_PALETTE(pipe, i));
1580
1581 blob_data[i].red = intel_color_lut_pack(REG_FIELD_GET(
1582 PREC_PALETTE_RED_MASK, val), 10);
1583 blob_data[i].green = intel_color_lut_pack(REG_FIELD_GET(
1584 PREC_PALETTE_GREEN_MASK, val), 10);
1585 blob_data[i].blue = intel_color_lut_pack(REG_FIELD_GET(
1586 PREC_PALETTE_BLUE_MASK, val), 10);
1587 }
1588
1589 return blob;
1590 }
1591
---
0-DAY kernel test infrastructure Open Source Technology Center
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