tree: git://anongit.freedesktop.org/drm-intel drm-intel-next-queued head: 4bb6a9d5d9a8289673c4cb0786d44be8a63c21db commit: 1af22383829864299102ca0c2eab458f755a9971 [5/7] drm/i915/display: Extract i9xx_read_luts()

If you fix the issue, kindly add following tag Reported-by: kbuild test robot lkp@intel.com

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 +1535 drivers/gpu/drm/i915/display/intel_color.c

1518 1519 static struct drm_property_blob * 1520 i9xx_read_lut_8(const struct intel_crtc_state *crtc_state) 1521 { 1522 struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc); 1523 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); 1524 enum pipe pipe = crtc->pipe; 1525 struct drm_property_blob *blob; 1526 struct drm_color_lut *blob_data; 1527 u32 i, val; 1528 1529 blob = drm_property_create_blob(&dev_priv->drm, 1530 sizeof(struct drm_color_lut) * LEGACY_LUT_LENGTH, 1531 NULL); 1532 if (IS_ERR(blob)) 1533 return NULL; 1534

1535 blob_data = blob->data;

1536 1537 for (i = 0; i < LEGACY_LUT_LENGTH; i++) { 1538 if (HAS_GMCH(dev_priv)) 1539 val = I915_READ(PALETTE(pipe, i)); 1540 else 1541 val = I915_READ(LGC_PALETTE(pipe, i)); 1542 1543 blob_data[i].red = intel_color_lut_pack(REG_FIELD_GET( 1544 LGC_PALETTE_RED_MASK, val), 8); 1545 blob_data[i].green = intel_color_lut_pack(REG_FIELD_GET( 1546 LGC_PALETTE_GREEN_MASK, val), 8); 1547 blob_data[i].blue = intel_color_lut_pack(REG_FIELD_GET( 1548 LGC_PALETTE_BLUE_MASK, val), 8); 1549 } 1550 1551 return blob; 1552 } 1553

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