Coverity: tgl_gt_workarounds_init(): Integer handling issues

[coverity-bot <keescook@chromium.org>]

Hello!

This is an experimental automated report about issues detected by Coverity
from a scan of next-20191025 as part of the linux-next weekly scan project:
https://scan.coverity.com/projects/linux-next-weekly-scan

You're getting this email because you were associated with the identified
lines of code (noted below) that were touched by recent commits:

65df78bda385 ("drm/i915/tgl: Wa_1409420604")

Coverity reported the following:

*** CID 1487372:  Integer handling issues  (NO_EFFECT)
/drivers/gpu/drm/i915/gt/intel_workarounds.c: 906 in tgl_gt_workarounds_init()
900     }
901
902     static void
903     tgl_gt_workarounds_init(struct drm_i915_private *i915, struct i915_wa_list *wal)
904     {
905     	/* Wa_1409420604:tgl */
vvv     CID 1487372:  Integer handling issues  (NO_EFFECT)
vvv     This greater-than-or-equal-to-zero comparison of an unsigned value is always true. "i915->drm.pdev->revision >= 0".
906     	if (IS_TGL_REVID(i915, TGL_REVID_A0, TGL_REVID_A0))
907     		wa_write_or(wal,
908     			    SUBSLICE_UNIT_LEVEL_CLKGATE2,
909     			    CPSSUNIT_CLKGATE_DIS);
910
911     	/* Wa_1409180338:tgl */

If this is a false positive, please let us know so we can mark it as
such, or teach the Coverity rules to be smarter. If not, please make
sure fixes get into linux-next. :) For patches fixing this, please
include:

Reported-by: coverity-bot <keescook+coverity-bot@chromium.org>
Addresses-Coverity-ID: 1487372 ("Integer handling issues")
Fixes: 65df78bda385 ("drm/i915/tgl: Wa_1409420604")


Thanks for your attention!

-- 
Coverity-bot