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Wed, 06 Mar 2024 17:40:27 +0800 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Wed, 6 Mar 2024 17:40:25 +0800 Received: from mbjsdccf07.gcn.mediatek.inc (10.15.20.246) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Wed, 6 Mar 2024 17:40:24 +0800 From: Chunhui Li To: Petr Mladek , Steven Rostedt , John Ogness , Sergey Senozhatsky , Matthias Brugger , AngeloGioacchino Del Regno CC: , , , , Chunhui Li Subject: [PATCH] printk: fix _entry_ptr build warning Date: Wed, 6 Mar 2024 17:26:47 +0800 Message-ID: <20240306092647.16010-1-chunhui.li@mediatek.com> X-Mailer: git-send-email 2.18.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain X-TM-AS-Product-Ver: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-AS-Result: No-10--0.708200-8.000000 X-TMASE-MatchedRID: Z2f9DQPf1tkE7MuQrZP2o5dc7I2df+ms75oFMklhrnhGL0g1nVmkYVO4 BD7nLMxnlTJXKqh1ne2/LclmUK1hkobzTO6asfbjyDp+jSvEtWv0O7M3lSnTW5soi2XrUn/Jn6K dMrRsL14qtq5d3cxkNRqXnrxrKCOXFcwn/U1iS4dD30h1PAU6P6/GTBhLbUgDqhGWfuPUaq93ob md2bsjHipWuuOW0EtOvAgHKzqJDgOL28eWhdXbLK92atjiJrAoF0aD5ljt43pMcHZD6gqu7wxMj fifIXfowkvVoA11Twp+3BndfXUhXQ== X-TM-AS-User-Approved-Sender: No X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--0.708200-8.000000 X-TMASE-Version: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-SNTS-SMTP: 1CE3B773FBAD0C22075C8D3E0E295523F7348289C887245A523E5D76D60A61202000:8 X-MTK: N We build with Werror and suffer build error when enable CONFIG_PRINTK_INDEX, such as gfp.h:223:2: error: unused variable '_entry_ptr' ratelimit.h:31:3: error: unused variable '_entry_ptr' kallsyms.h:172:2: error: unused variable '_entry_ptr' [-Werror,-Wunused-variable] Fix the warning by appending __attribute__((unused)). Signed-off-by: Chunhui Li --- include/linux/printk.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/printk.h b/include/linux/printk.h index 8ef499ab3c1e..749c1c4257f1 100644 --- a/include/linux/printk.h +++ b/include/linux/printk.h @@ -392,7 +392,7 @@ struct pi_entry { .level = __builtin_constant_p(_level) ? (_level) : NULL, \ .subsys_fmt_prefix = _subsys_fmt_prefix,\ }; \ - static const struct pi_entry *_entry_ptr \ + static const struct pi_entry *_entry_ptr __attribute__((unused)) \ __used __section(".printk_index") = &_entry; \ } \ } while (0) -- 2.18.0