From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Thu, 8 Feb 2018 16:16:39 +0000
Subject: drm/i915: Disable unused-but-set compiler warning
Git-commit: 6a05d290046447fca311022004a4725f3f627dc9
Patch-mainline: v4.17-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

The unused-but-set warning enabled by W=1 catches out a lot of the
atomic helper iterator macros and drown us in their noise (or trip over
Werror and die). Path of least resistance is to ignore the warning.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180208161639.27511-1-chris@chris-wilson.co.uk
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/i915/Makefile |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -16,6 +16,7 @@ subdir-ccflags-y += $(call cc-disable-wa
 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 += $(call cc-disable-warning, unused-but-set-variable)
 subdir-ccflags-$(CONFIG_DRM_I915_WERROR) += -Werror
 
 # Fine grained warnings disable