Level is unsigned, so not less than 0 (line 230).

julia

---------- Forwarded message ---------- Date: Tue, 20 Mar 2018 16:39:16 +0800 From: kbuild test robot fengguang.wu@intel.com To: kbuild@01.org Cc: Julia Lawall julia.lawall@lip6.fr Subject: [drm-intel:drm-intel-next-queued 13/14] drivers/gpu/drm/i915/intel_guc.c:230:12-17: WARNING: Unsigned expression compared with zero: level < 0

CC: kbuild-all@01.org CC: intel-gfx@lists.freedesktop.org CC: dri-devel@lists.freedesktop.org TO: Chris Wilson chris@chris-wilson.co.uk CC: Matthew Auld matthew.auld@intel.com

tree: git://anongit.freedesktop.org/drm-intel drm-intel-next-queued head: 873d66fb9b1d4f4cd441f84068abb5457c60f127 commit: 46b863325c2f58b564463c4d6e66ee0d4f2f3244 [13/14] drm/i915: Prefer memset64() when filling the iomap :::::: branch date: 16 hours ago :::::: commit date: 18 hours ago

...

drivers/gpu/drm/i915/intel_guc.c:230:12-17: WARNING: Unsigned expression compared with zero: level < 0

git remote add drm-intel git://anongit.freedesktop.org/drm-intel git remote update drm-intel git checkout 46b863325c2f58b564463c4d6e66ee0d4f2f3244 vim +230 drivers/gpu/drm/i915/intel_guc.c

5d53be45 Michal Wajdeczko 2017-10-16 224 cb5d64e9 Michał Winiarski 2018-03-19 225 static u32 get_log_control_flags(void) 0ed87953 Michal Wajdeczko 2018-01-11 226 { cb5d64e9 Michał Winiarski 2018-03-19 227 u32 level = i915_modparams.guc_log_level; cb5d64e9 Michał Winiarski 2018-03-19 228 u32 flags = 0; 0ed87953 Michal Wajdeczko 2018-01-11 229 cb5d64e9 Michał Winiarski 2018-03-19 @230 GEM_BUG_ON(level < 0); cb5d64e9 Michał Winiarski 2018-03-19 231 cb5d64e9 Michał Winiarski 2018-03-19 232 if (!GUC_LOG_LEVEL_TO_ENABLED(level)) cb5d64e9 Michał Winiarski 2018-03-19 233 flags |= GUC_LOG_DEFAULT_DISABLED; cb5d64e9 Michał Winiarski 2018-03-19 234 cb5d64e9 Michał Winiarski 2018-03-19 235 if (!GUC_LOG_LEVEL_TO_VERBOSE(level)) cb5d64e9 Michał Winiarski 2018-03-19 236 flags |= GUC_LOG_DISABLED; cb5d64e9 Michał Winiarski 2018-03-19 237 else cb5d64e9 Michał Winiarski 2018-03-19 238 flags |= GUC_LOG_LEVEL_TO_VERBOSITY(level) << cb5d64e9 Michał Winiarski 2018-03-19 239 GUC_LOG_VERBOSITY_SHIFT; 0ed87953 Michal Wajdeczko 2018-01-11 240 cb5d64e9 Michał Winiarski 2018-03-19 241 return flags; 0ed87953 Michal Wajdeczko 2018-01-11 242 } 0ed87953 Michal Wajdeczko 2018-01-11 243

:::::: The code at line 230 was first introduced by commit :::::: cb5d64e9f13e0dd817c3ae2dbe73c3b8c6c13f95 drm/i915/guc: Allow user to control default GuC logging

:::::: TO: Michał Winiarski michal.winiarski@intel.com :::::: CC: Chris Wilson chris@chris-wilson.co.uk

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