From patchwork Mon Oct 28 16:35:46 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 13853739 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C611C1DED59; Mon, 28 Oct 2024 16:36:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730133360; cv=none; b=pQ0C2VymP6UrVuTbr6BAqidR2yVljzQwH4QiuhEzD8jhIFlheQhrAyuIRgzUFONUbvaHNItityb6q2eIno3YTMgigmPDNbIB+lUfIqYvvA3VT941ZzUKHA6sW0h7YF2J6+kacuuo73u2Dg7WOS1bdHMEnlWr6VefpC5i6GImBUI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730133360; c=relaxed/simple; bh=xdGiQWMlOc2GWNr8BFQjy6F7f2VQLFtCYg1i3syZ90k=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=cshm2e0fRAVeuj045IaF/7dUFvyS+ntfWxN1bxaWx/SCbkJZG2vZLvnhfXfzw20mTHpnqulHr0iVDBo24d0UqWaCiUpHuOyTiv5hsXQ5H+8cbu+KOBcJgs3cRXzg2S2OrJ98quza6K9GSx7e6v2yvFtaGgvT6O6NcaOTmFrrvHY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=anMVQLCM; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="anMVQLCM" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5CE1AC4CEC3; Mon, 28 Oct 2024 16:35:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1730133360; bh=xdGiQWMlOc2GWNr8BFQjy6F7f2VQLFtCYg1i3syZ90k=; h=From:To:Cc:Subject:Date:From; b=anMVQLCMntblLAEq/unrqH4pRumPIY59wMltOSYs/pD8k7zbxBjv4QO8VMmAIsTNt sDJpoE7/IgaN19QpESr5S67BnhDWJow4DKA8IE6U15/wNpP9LLFxsgjJMUzEkQm21+ a/yinuejQA5PekFq3O6+9egw6Cg43IzO5LSJLb/gK/G+EWRk6oPeskkIDb+SQOBPVN pLqYrGTsd+HGZfHe/T3bfO/q4r4VNx0cfT7zCY8whsdsKwwqdYUiC75oa4xGtZgy/T OCorWtquqN33W3JENMFP+Qlb19OpM1xjKUdZKt3DI+rgXby2ahvZprYl/kUTU8bJ5+ 18rYNMUwSZZHg== From: Arnd Bergmann To: Naveen Krishna Chatradhi , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Suma Hegde Cc: Arnd Bergmann , Carlos Bilbao , "H. Peter Anvin" , Randy Dunlap , Bjorn Helgaas , platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] platform/x86/amd/hsmp: mark hsmp_msg_desc_table[] as maybe_unused Date: Mon, 28 Oct 2024 16:35:46 +0000 Message-Id: <20241028163553.2452486-1-arnd@kernel.org> X-Mailer: git-send-email 2.39.5 Precedence: bulk X-Mailing-List: platform-driver-x86@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Arnd Bergmann After the file got split, there are now W=1 warnings for users that include it without referencing hsmp_msg_desc_table: In file included from arch/x86/include/asm/amd_hsmp.h:6, from drivers/platform/x86/amd/hsmp/plat.c:12: arch/x86/include/uapi/asm/amd_hsmp.h:91:35: error: 'hsmp_msg_desc_table' defined but not used [-Werror=unused-const-variable=] 91 | static const struct hsmp_msg_desc hsmp_msg_desc_table[] = { | ^~~~~~~~~~~~~~~~~~~ Mark it as __attribute__((maybe_unused)) to shut up the warning but keep it in the file in case it is used from userland. The __maybe_unused shorthand unfurtunately isn't available in userspace, so this has to be the long form. Fixes: e47c018a0ee6 ("platform/x86/amd/hsmp: Move platform device specific code to plat.c") Signed-off-by: Arnd Bergmann --- Ideally this array wouldn't be part of the UAPI at all, since it is not really a interface, but it's hard to know what part of the header is actually used outside of the kernel. --- arch/x86/include/uapi/asm/amd_hsmp.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/x86/include/uapi/asm/amd_hsmp.h b/arch/x86/include/uapi/asm/amd_hsmp.h index e5d182c7373c..4a7cace06204 100644 --- a/arch/x86/include/uapi/asm/amd_hsmp.h +++ b/arch/x86/include/uapi/asm/amd_hsmp.h @@ -88,7 +88,8 @@ struct hsmp_msg_desc { * * Not supported messages would return -ENOMSG. */ -static const struct hsmp_msg_desc hsmp_msg_desc_table[] = { +static const struct hsmp_msg_desc hsmp_msg_desc_table[] + __attribute__((unused)) = { /* RESERVED */ {0, 0, HSMP_RSVD},