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From: Nathan Chancellor <natechancellor@gmail.com>
To: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>,
	Nicolas Pitre <npitre@baylibre.com>,
	linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org,
	clang-built-linux@googlegroups.com,
	Nathan Chancellor <natechancellor@gmail.com>
Subject: [PATCH] i3c/master/mipi-i3c-hci: Fix position of __maybe_unused in i3c_hci_of_match
Date: Mon, 21 Dec 2020 19:59:31 -0700	[thread overview]
Message-ID: <20201222025931.3043480-1-natechancellor@gmail.com> (raw)

Clang warns:

 ../drivers/i3c/master/mipi-i3c-hci/core.c:780:21: warning: attribute
 declaration must precede definition [-Wignored-attributes]
 static const struct __maybe_unused of_device_id i3c_hci_of_match[] = {
                     ^
 ../include/linux/compiler_attributes.h:267:56: note: expanded from macro
 '__maybe_unused'
 #define __maybe_unused                  __attribute__((__unused__))
                                                        ^
 ../include/linux/mod_devicetable.h:262:8: note: previous definition is
 here
 struct of_device_id {
        ^
1 warning generated.

'struct of_device_id' should not be split, as it is a type. Move the
__maybe_unused attribute after the static and const qualifiers so that
there are no warnings about this variable, period.

Fixes: 95393f3e07ab ("i3c/master/mipi-i3c-hci: quiet maybe-unused variable warning")
Link: https://github.com/ClangBuiltLinux/linux/issues/1221
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
---
 drivers/i3c/master/mipi-i3c-hci/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/i3c/master/mipi-i3c-hci/core.c b/drivers/i3c/master/mipi-i3c-hci/core.c
index 500abd27fb22..1b73647cc3b1 100644
--- a/drivers/i3c/master/mipi-i3c-hci/core.c
+++ b/drivers/i3c/master/mipi-i3c-hci/core.c
@@ -777,7 +777,7 @@ static int i3c_hci_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static const struct __maybe_unused of_device_id i3c_hci_of_match[] = {
+static const __maybe_unused struct of_device_id i3c_hci_of_match[] = {
 	{ .compatible = "mipi-i3c-hci", },
 	{},
 };

base-commit: 95393f3e07ab53855b91881692a4a5b52dcdc03c
-- 
2.30.0.rc1


WARNING: multiple messages have this Message-ID (diff)
From: Nathan Chancellor <natechancellor@gmail.com>
To: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>,
	linux-kernel@vger.kernel.org, Nicolas Pitre <npitre@baylibre.com>,
	clang-built-linux@googlegroups.com,
	Nathan Chancellor <natechancellor@gmail.com>,
	linux-i3c@lists.infradead.org
Subject: [PATCH] i3c/master/mipi-i3c-hci: Fix position of __maybe_unused in i3c_hci_of_match
Date: Mon, 21 Dec 2020 19:59:31 -0700	[thread overview]
Message-ID: <20201222025931.3043480-1-natechancellor@gmail.com> (raw)

Clang warns:

 ../drivers/i3c/master/mipi-i3c-hci/core.c:780:21: warning: attribute
 declaration must precede definition [-Wignored-attributes]
 static const struct __maybe_unused of_device_id i3c_hci_of_match[] = {
                     ^
 ../include/linux/compiler_attributes.h:267:56: note: expanded from macro
 '__maybe_unused'
 #define __maybe_unused                  __attribute__((__unused__))
                                                        ^
 ../include/linux/mod_devicetable.h:262:8: note: previous definition is
 here
 struct of_device_id {
        ^
1 warning generated.

'struct of_device_id' should not be split, as it is a type. Move the
__maybe_unused attribute after the static and const qualifiers so that
there are no warnings about this variable, period.

Fixes: 95393f3e07ab ("i3c/master/mipi-i3c-hci: quiet maybe-unused variable warning")
Link: https://github.com/ClangBuiltLinux/linux/issues/1221
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
---
 drivers/i3c/master/mipi-i3c-hci/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/i3c/master/mipi-i3c-hci/core.c b/drivers/i3c/master/mipi-i3c-hci/core.c
index 500abd27fb22..1b73647cc3b1 100644
--- a/drivers/i3c/master/mipi-i3c-hci/core.c
+++ b/drivers/i3c/master/mipi-i3c-hci/core.c
@@ -777,7 +777,7 @@ static int i3c_hci_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static const struct __maybe_unused of_device_id i3c_hci_of_match[] = {
+static const __maybe_unused struct of_device_id i3c_hci_of_match[] = {
 	{ .compatible = "mipi-i3c-hci", },
 	{},
 };

base-commit: 95393f3e07ab53855b91881692a4a5b52dcdc03c
-- 
2.30.0.rc1


-- 
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linux-i3c@lists.infradead.org
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             reply	other threads:[~2020-12-22  3:00 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-22  2:59 Nathan Chancellor [this message]
2020-12-22  2:59 ` [PATCH] i3c/master/mipi-i3c-hci: Fix position of __maybe_unused in i3c_hci_of_match Nathan Chancellor
2020-12-22  3:13 ` Nicolas Pitre
2020-12-22  3:13   ` Nicolas Pitre
2020-12-31 17:42 ` Alexandre Belloni
2020-12-31 17:42   ` Alexandre Belloni
2021-02-09  3:59   ` Nathan Chancellor
2021-02-09  3:59     ` Nathan Chancellor

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