[PATCH 29/35] drm/i915: Ignore frequent clang warnings

[Chris Wilson]

In order to reduce the flood of common errors reported by clang, add
them to the exclusion list in the Makefile. The plan is to taken them
slowly, most of the -Wsign-compare fixes should be trivial, and may even
find a bug or two!

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
---
 drivers/gpu/drm/i915/Makefile | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 61d083ad2e33..431f20e388a5 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -17,11 +17,16 @@ subdir-ccflags-y += $(call cc-disable-warning, unused-parameter)
 subdir-ccflags-y += $(call cc-disable-warning, type-limits)
 subdir-ccflags-y += $(call cc-disable-warning, missing-field-initializers)
 subdir-ccflags-y += $(call cc-disable-warning, implicit-fallthrough)
+subdir-ccflags-y += $(call cc-disable-warning, sign-compare)
+subdir-ccflags-y += $(call cc-disable-warning, ignored-attributes)
 subdir-ccflags-$(CONFIG_DRM_I915_WERROR) += -Werror
 
 # Fine grained warnings disable
-CFLAGS_i915_pci.o = $(call cc-disable-warning, override-init)
-CFLAGS_intel_fbdev.o = $(call cc-disable-warning, override-init)
+allow_init_inheritance := \
+	$(call cc-disable-warning, override-init) \
+	$(call cc-disable-warning, initializer-overrides)
+CFLAGS_i915_pci.o = $(allow_init_inheritance)
+CFLAGS_intel_fbdev.o = $(allow_init_inheritance)
 
 subdir-ccflags-y += \
 	$(call as-instr,movntdqa (%eax)$(comma)%xmm0,-DCONFIG_AS_MOVNTDQA)
-- 
2.15.1