[Intel-gfx] [PATCH] drm: Make integer overflow checking cover universal cursor updates (v2)

[shuang.he at intel.com]

Tested-By: Intel Graphics QA PRTS (Patch Regression Test System Contact: shuang.he at intel.com)
Task id: 6187
-------------------------------------Summary-------------------------------------
Platform          Delta          drm-intel-nightly          Series Applied
PNV                 -8              276/276              268/276
ILK                                  301/301              301/301
SNB                 -22              316/316              294/316
IVB                 -1              328/328              327/328
BYT                                  285/285              285/285
HSW                                  394/394              394/394
BDW                                  321/321              321/321
-------------------------------------Detailed-------------------------------------
Platform  Test                                drm-intel-nightly          Series Applied
*PNV  igt at gem_tiled_pread_pwrite      PASS(4)      FAIL(1)PASS(1)
 PNV  igt at gem_userptr_blits@coherency-sync      CRASH(2)PASS(4)      CRASH(2)
 PNV  igt at gem_userptr_blits@coherency-unsync      CRASH(2)PASS(5)      CRASH(2)
*PNV  igt at gem_userptr_blits@forked-sync-swapping-mempressure-interruptible      PASS(2)      FAIL(1)PASS(1)
 PNV  igt at gen3_render_linear_blits      FAIL(4)PASS(8)      FAIL(2)
 PNV  igt at gen3_render_mixed_blits      FAIL(5)PASS(7)      FAIL(2)
 PNV  igt at gen3_render_tiledx_blits      FAIL(5)PASS(8)      FAIL(2)
 PNV  igt at gen3_render_tiledy_blits      FAIL(4)PASS(7)      FAIL(2)
 SNB  igt at kms_cursor_crc@cursor-size-change      NSPT(2)PASS(1)      NSPT(2)
 SNB  igt at kms_flip_event_leak      NSPT(2)PASS(1)      NSPT(2)
 SNB  igt at kms_mmio_vs_cs_flip@setcrtc_vs_cs_flip      NSPT(3)PASS(1)      NSPT(2)
 SNB  igt at kms_mmio_vs_cs_flip@setplane_vs_cs_flip      NSPT(3)PASS(1)      NSPT(2)
 SNB  igt at kms_rotation_crc@primary-rotation      NSPT(3)PASS(1)      NSPT(2)
 SNB  igt at kms_rotation_crc@sprite-rotation      NSPT(3)PASS(3)      NSPT(2)
 SNB  igt at pm_rpm@cursor      NSPT(3)PASS(1)      NSPT(2)
 SNB  igt at pm_rpm@cursor-dpms      NSPT(3)PASS(1)      NSPT(2)
 SNB  igt at pm_rpm@dpms-mode-unset-non-lpsp      NSPT(3)PASS(1)      NSPT(2)
 SNB  igt at pm_rpm@dpms-non-lpsp      NSPT(3)PASS(1)      NSPT(2)
 SNB  igt at pm_rpm@drm-resources-equal      NSPT(3)PASS(1)      NSPT(2)
 SNB  igt at pm_rpm@fences      NSPT(3)PASS(1)      NSPT(2)
 SNB  igt at pm_rpm@fences-dpms      NSPT(3)PASS(1)      NSPT(2)
 SNB  igt at pm_rpm@gem-execbuf      NSPT(3)PASS(1)      NSPT(2)
 SNB  igt at pm_rpm@gem-mmap-cpu      NSPT(3)PASS(1)      NSPT(2)
 SNB  igt at pm_rpm@gem-mmap-gtt      NSPT(3)PASS(1)      NSPT(2)
 SNB  igt at pm_rpm@gem-pread      NSPT(3)PASS(1)      NSPT(2)
 SNB  igt at pm_rpm@i2c      NSPT(3)PASS(1)      NSPT(2)
 SNB  igt at pm_rpm@modeset-non-lpsp      NSPT(3)PASS(1)      NSPT(2)
 SNB  igt at pm_rpm@modeset-non-lpsp-stress-no-wait      NSPT(3)PASS(1)      NSPT(2)
 SNB  igt at pm_rpm@pci-d3-state      NSPT(3)PASS(1)      NSPT(2)
 SNB  igt at pm_rpm@rte      NSPT(3)PASS(1)      NSPT(2)
 IVB  igt at gem_pwrite_pread@uncached-copy-performance      DMESG_WARN(1)PASS(8)      DMESG_WARN(1)PASS(1)
(dmesg patch applied)drm:i915_hangcheck_elapsed[i915]]*ERROR*Hangcheck_timer_elapsed...blitter_ring_idle at Hangcheck timer elapsed... blitter ring idle
Note: You need to pay more attention to line start with '*'