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From: Matthias Kaehlcke <mka@chromium.org>
To: Jani Nikula <jani.nikula@linux.intel.com>,
	Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
	Rodrigo Vivi <rodrigo.vivi@intel.com>,
	David Airlie <airlied@linux.ie>
Cc: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
	linux-kernel@vger.kernel.org, Guenter Roeck <groeck@chromium.org>,
	Matthias Kaehlcke <mka@chromium.org>
Subject: [PATCH] drm/i915: Disable some extra clang warnings
Date: Fri, 16 Mar 2018 17:31:51 -0700	[thread overview]
Message-ID: <20180317003151.252750-1-mka@chromium.org> (raw)

Commit 39bf4de89ff7 ("drm/i915: Add -Wall -Wextra to our build, set
warnings to full") enabled extra warnings for i915 to spot possible
bugs in new code, and then disabled a subset of these warnings to keep
the current code building without warnings (with gcc). Enabling the
extra warnings also enabled some additional clang-only warnings, as a
result building i915 with clang currently is extremely noisy. For now
also disable the clang warnings sign-compare, sometimes-uninitialized,
unneeded-internal-declaration and initializer-overrides. If desired
they can be re-enabled after the code has been fixed.

Fixes: 39bf4de89ff7 ("drm/i915: Add -Wall -Wextra to our build, set
warnings to full")
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
---
 drivers/gpu/drm/i915/Makefile | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 091aef281963..ad05796a96ba 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -17,6 +17,10 @@ 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, sometimes-uninitialized)
+subdir-ccflags-y += $(call cc-disable-warning, unneeded-internal-declaration)
+subdir-ccflags-y += $(call cc-disable-warning, initializer-overrides)
 subdir-ccflags-$(CONFIG_DRM_I915_WERROR) += -Werror
 
 # Fine grained warnings disable
-- 
2.16.2.804.g6dcf76e118-goog

WARNING: multiple messages have this Message-ID (diff)
From: Matthias Kaehlcke <mka@chromium.org>
To: Jani Nikula <jani.nikula@linux.intel.com>,
	Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
	Rodrigo Vivi <rodrigo.vivi@intel.com>,
	David Airlie <airlied@linux.ie>
Cc: Guenter Roeck <groeck@chromium.org>,
	intel-gfx@lists.freedesktop.org,
	Matthias Kaehlcke <mka@chromium.org>,
	linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org
Subject: [PATCH] drm/i915: Disable some extra clang warnings
Date: Fri, 16 Mar 2018 17:31:51 -0700	[thread overview]
Message-ID: <20180317003151.252750-1-mka@chromium.org> (raw)

Commit 39bf4de89ff7 ("drm/i915: Add -Wall -Wextra to our build, set
warnings to full") enabled extra warnings for i915 to spot possible
bugs in new code, and then disabled a subset of these warnings to keep
the current code building without warnings (with gcc). Enabling the
extra warnings also enabled some additional clang-only warnings, as a
result building i915 with clang currently is extremely noisy. For now
also disable the clang warnings sign-compare, sometimes-uninitialized,
unneeded-internal-declaration and initializer-overrides. If desired
they can be re-enabled after the code has been fixed.

Fixes: 39bf4de89ff7 ("drm/i915: Add -Wall -Wextra to our build, set
warnings to full")
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
---
 drivers/gpu/drm/i915/Makefile | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 091aef281963..ad05796a96ba 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -17,6 +17,10 @@ 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, sometimes-uninitialized)
+subdir-ccflags-y += $(call cc-disable-warning, unneeded-internal-declaration)
+subdir-ccflags-y += $(call cc-disable-warning, initializer-overrides)
 subdir-ccflags-$(CONFIG_DRM_I915_WERROR) += -Werror
 
 # Fine grained warnings disable
-- 
2.16.2.804.g6dcf76e118-goog

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             reply	other threads:[~2018-03-17  0:32 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-17  0:31 Matthias Kaehlcke [this message]
2018-03-17  0:31 ` [PATCH] drm/i915: Disable some extra clang warnings Matthias Kaehlcke
2018-03-17  0:46 ` ✗ Fi.CI.BAT: failure for " Patchwork
2018-03-19  8:21 ` [PATCH] " Jani Nikula
2018-03-19  8:21   ` Jani Nikula

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