[Intel-gfx] [PATCH] drm/i915/fbc: fix the check for already reserved fbc size

[shuang.he at intel.com]

Tested-By: PRC QA PRTS (Patch Regression Test System Contact: shuang.he at intel.com)
Task id: 5714
-------------------------------------Summary-------------------------------------
Platform          Delta          drm-intel-nightly          Series Applied
PNV                                  282/283              282/283
ILK                 -1              316/319              315/319
SNB              +22-1              322/346              343/346
IVB                 -1              382/384              381/384
BYT                                  296/296              296/296
HSW                 -1              425/428              424/428
BDW                                  318/333              318/333
-------------------------------------Detailed-------------------------------------
Platform  Test                                drm-intel-nightly          Series Applied
*ILK  igt_kms_flip_vblank-vs-hang      PASS(3, M26M37)      TIMEOUT(1, M26)
 SNB  igt_kms_cursor_crc_cursor-size-change      NSPT(1, M22)PASS(1, M35)DMESG_FAIL(1, M35)      PASS(1, M35)
 SNB  igt_kms_flip_dpms-vs-vblank-race-interruptible      DMESG_WARN(1, M35)PASS(2, M22M35)      DMESG_WARN(1, M35)
 SNB  igt_kms_flip_event_leak      NSPT(1, M22)PASS(2, M35)      PASS(1, M35)
 SNB  igt_kms_mmio_vs_cs_flip_setcrtc_vs_cs_flip      NSPT(1, M22)PASS(2, M35)      PASS(1, M35)
 SNB  igt_kms_mmio_vs_cs_flip_setplane_vs_cs_flip      NSPT(1, M22)PASS(2, M35)      PASS(1, M35)
 SNB  igt_kms_rotation_crc_primary-rotation      NSPT(1, M22)PASS(2, M35)      PASS(1, M35)
 SNB  igt_kms_rotation_crc_sprite-rotation      NSPT(1, M22)PASS(2, M35)      PASS(1, M35)
 SNB  igt_pm_rpm_cursor      NSPT(1, M22)PASS(2, M35)      PASS(1, M35)
 SNB  igt_pm_rpm_cursor-dpms      NSPT(1, M22)PASS(2, M35)      PASS(1, M35)
 SNB  igt_pm_rpm_dpms-mode-unset-non-lpsp      NSPT(1, M22)PASS(2, M35)      PASS(1, M35)
 SNB  igt_pm_rpm_dpms-non-lpsp      NSPT(1, M22)PASS(2, M35)      PASS(1, M35)
 SNB  igt_pm_rpm_drm-resources-equal      NSPT(1, M22)PASS(2, M35)      PASS(1, M35)
 SNB  igt_pm_rpm_fences      NSPT(1, M22)PASS(2, M35)      PASS(1, M35)
 SNB  igt_pm_rpm_fences-dpms      NSPT(1, M22)DMESG_WARN(1, M35)PASS(1, M35)      PASS(1, M35)
 SNB  igt_pm_rpm_gem-execbuf      NSPT(1, M22)PASS(2, M35)      PASS(1, M35)
 SNB  igt_pm_rpm_gem-mmap-cpu      NSPT(1, M22)PASS(2, M35)      PASS(1, M35)
 SNB  igt_pm_rpm_gem-mmap-gtt      NSPT(1, M22)PASS(2, M35)      PASS(1, M35)
 SNB  igt_pm_rpm_gem-pread      NSPT(1, M22)PASS(2, M35)      PASS(1, M35)
 SNB  igt_pm_rpm_i2c      NSPT(1, M22)PASS(2, M35)      PASS(1, M35)
 SNB  igt_pm_rpm_modeset-non-lpsp      NSPT(1, M22)PASS(2, M35)      PASS(1, M35)
 SNB  igt_pm_rpm_modeset-non-lpsp-stress-no-wait      NSPT(1, M22)PASS(2, M35)      PASS(1, M35)
 SNB  igt_pm_rpm_pci-d3-state      NSPT(1, M22)PASS(2, M35)      PASS(1, M35)
 SNB  igt_pm_rpm_rte      NSPT(1, M22)PASS(2, M35)      PASS(1, M35)
 IVB  igt_gem_pwrite_pread_snooped-copy-performance      DMESG_WARN(1, M34)PASS(1, M21)      DMESG_WARN(1, M34)
*HSW  igt_gem_pwrite_pread_snooped-copy-performance      PASS(2, M20M40)      DMESG_WARN(1, M40)
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