From: Nathan Chancellor <nathan@kernel.org>
To: Jani Nikula <jani.nikula@linux.intel.com>,
Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>,
intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com,
Nathan Chancellor <nathan@kernel.org>,
Arnd Bergmann <arnd@arndb.de>
Subject: [PATCH] drm/i915: Enable -Wuninitialized
Date: Tue, 16 Feb 2021 14:29:54 -0700 [thread overview]
Message-ID: <20210216212953.24458-1-nathan@kernel.org> (raw)
-Wunintialized was disabled in commit c5627461490e ("drm/i915: Disable
-Wuninitialized") because there were two warnings that were false
positives. The first was due to DECLARE_WAIT_QUEUE_HEAD_ONSTACK, which
was fixed in LLVM 9.0.0. The second was in busywait_stop, which was
fixed in LLVM 10.0.0 (issue 415). The kernel's minimum version for LLVM
is 10.0.1 so this warning can be safely enabled, where it has already
caught a couple bugs.
Link: https://github.com/ClangBuiltLinux/linux/issues/220
Link: https://github.com/ClangBuiltLinux/linux/issues/415
Link: https://github.com/ClangBuiltLinux/linux/issues/499
Link: https://github.com/llvm/llvm-project/commit/2e040398f8d691cc378c1abb098824ff49f3f28f
Link: https://github.com/llvm/llvm-project/commit/c667cdc850c2aa821ffeedbc08c24bc985c59edd
Fixes: c5627461490e ("drm/i915: Disable -Wuninitialized")
References: 2ea4a7ba9bf6 ("drm/i915/gt: Avoid uninitialized use of rpcurupei in frequency_show")
References: 2034c2129bc4 ("drm/i915/display: Ensure that ret is always initialized in icl_combo_phy_verify_state")
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
---
drivers/gpu/drm/i915/Makefile | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 6d9e81ea67f4..60b60204004f 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -21,7 +21,6 @@ subdir-ccflags-y += $(call cc-disable-warning, unused-but-set-variable)
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, initializer-overrides)
-subdir-ccflags-y += $(call cc-disable-warning, uninitialized)
subdir-ccflags-y += $(call cc-disable-warning, frame-address)
subdir-ccflags-$(CONFIG_DRM_I915_WERROR) += -Werror
base-commit: f40ddce88593482919761f74910f42f4b84c004b
--
2.30.1
WARNING: multiple messages have this Message-ID (diff)
From: Nathan Chancellor <nathan@kernel.org>
To: Jani Nikula <jani.nikula@linux.intel.com>,
Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
intel-gfx@lists.freedesktop.org,
Nick Desaulniers <ndesaulniers@google.com>,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
Nathan Chancellor <nathan@kernel.org>,
clang-built-linux@googlegroups.com
Subject: [PATCH] drm/i915: Enable -Wuninitialized
Date: Tue, 16 Feb 2021 14:29:54 -0700 [thread overview]
Message-ID: <20210216212953.24458-1-nathan@kernel.org> (raw)
-Wunintialized was disabled in commit c5627461490e ("drm/i915: Disable
-Wuninitialized") because there were two warnings that were false
positives. The first was due to DECLARE_WAIT_QUEUE_HEAD_ONSTACK, which
was fixed in LLVM 9.0.0. The second was in busywait_stop, which was
fixed in LLVM 10.0.0 (issue 415). The kernel's minimum version for LLVM
is 10.0.1 so this warning can be safely enabled, where it has already
caught a couple bugs.
Link: https://github.com/ClangBuiltLinux/linux/issues/220
Link: https://github.com/ClangBuiltLinux/linux/issues/415
Link: https://github.com/ClangBuiltLinux/linux/issues/499
Link: https://github.com/llvm/llvm-project/commit/2e040398f8d691cc378c1abb098824ff49f3f28f
Link: https://github.com/llvm/llvm-project/commit/c667cdc850c2aa821ffeedbc08c24bc985c59edd
Fixes: c5627461490e ("drm/i915: Disable -Wuninitialized")
References: 2ea4a7ba9bf6 ("drm/i915/gt: Avoid uninitialized use of rpcurupei in frequency_show")
References: 2034c2129bc4 ("drm/i915/display: Ensure that ret is always initialized in icl_combo_phy_verify_state")
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
---
drivers/gpu/drm/i915/Makefile | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 6d9e81ea67f4..60b60204004f 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -21,7 +21,6 @@ subdir-ccflags-y += $(call cc-disable-warning, unused-but-set-variable)
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, initializer-overrides)
-subdir-ccflags-y += $(call cc-disable-warning, uninitialized)
subdir-ccflags-y += $(call cc-disable-warning, frame-address)
subdir-ccflags-$(CONFIG_DRM_I915_WERROR) += -Werror
base-commit: f40ddce88593482919761f74910f42f4b84c004b
--
2.30.1
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
WARNING: multiple messages have this Message-ID (diff)
From: Nathan Chancellor <nathan@kernel.org>
To: Jani Nikula <jani.nikula@linux.intel.com>,
Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
intel-gfx@lists.freedesktop.org,
Nick Desaulniers <ndesaulniers@google.com>,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
Nathan Chancellor <nathan@kernel.org>,
clang-built-linux@googlegroups.com
Subject: [Intel-gfx] [PATCH] drm/i915: Enable -Wuninitialized
Date: Tue, 16 Feb 2021 14:29:54 -0700 [thread overview]
Message-ID: <20210216212953.24458-1-nathan@kernel.org> (raw)
-Wunintialized was disabled in commit c5627461490e ("drm/i915: Disable
-Wuninitialized") because there were two warnings that were false
positives. The first was due to DECLARE_WAIT_QUEUE_HEAD_ONSTACK, which
was fixed in LLVM 9.0.0. The second was in busywait_stop, which was
fixed in LLVM 10.0.0 (issue 415). The kernel's minimum version for LLVM
is 10.0.1 so this warning can be safely enabled, where it has already
caught a couple bugs.
Link: https://github.com/ClangBuiltLinux/linux/issues/220
Link: https://github.com/ClangBuiltLinux/linux/issues/415
Link: https://github.com/ClangBuiltLinux/linux/issues/499
Link: https://github.com/llvm/llvm-project/commit/2e040398f8d691cc378c1abb098824ff49f3f28f
Link: https://github.com/llvm/llvm-project/commit/c667cdc850c2aa821ffeedbc08c24bc985c59edd
Fixes: c5627461490e ("drm/i915: Disable -Wuninitialized")
References: 2ea4a7ba9bf6 ("drm/i915/gt: Avoid uninitialized use of rpcurupei in frequency_show")
References: 2034c2129bc4 ("drm/i915/display: Ensure that ret is always initialized in icl_combo_phy_verify_state")
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
---
drivers/gpu/drm/i915/Makefile | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 6d9e81ea67f4..60b60204004f 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -21,7 +21,6 @@ subdir-ccflags-y += $(call cc-disable-warning, unused-but-set-variable)
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, initializer-overrides)
-subdir-ccflags-y += $(call cc-disable-warning, uninitialized)
subdir-ccflags-y += $(call cc-disable-warning, frame-address)
subdir-ccflags-$(CONFIG_DRM_I915_WERROR) += -Werror
base-commit: f40ddce88593482919761f74910f42f4b84c004b
--
2.30.1
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
next reply other threads:[~2021-02-16 21:31 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-16 21:29 Nathan Chancellor [this message]
2021-02-16 21:29 ` [Intel-gfx] [PATCH] drm/i915: Enable -Wuninitialized Nathan Chancellor
2021-02-16 21:29 ` Nathan Chancellor
2021-02-17 13:24 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for " Patchwork
2021-02-17 13:25 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork
2021-02-17 13:53 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2021-02-17 13:56 ` [PATCH] " Chris Wilson
2021-02-17 15:51 ` [Intel-gfx] ✗ Fi.CI.IGT: failure for " Patchwork
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