From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 700FEC3A59F for ; Thu, 29 Aug 2019 10:51:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 47BF8233FF for ; Thu, 29 Aug 2019 10:51:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1567075900; bh=6ZTbBvYvBxAA5ThjBoEmBwgFxQiPy3QjeGMo/nvlzno=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=yyl1PObtYwHPm9rPMw6saw6O/3REaNkZQJfsX6HRSqXY8A9YDrf7QK8gbphaRywZ/ On8erTRPoILXLQ4m+IildRE0ops/JSdtrJc7jSfjjqLdH4xau5y8jHA0tfBfPd0YEb A77A4HRYJSQpo4EAn7nL1nRex9QzJ9f+4NtOZgTk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728695AbfH2Kvj (ORCPT ); Thu, 29 Aug 2019 06:51:39 -0400 Received: from mail.kernel.org ([198.145.29.99]:58992 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728506AbfH2KvL (ORCPT ); Thu, 29 Aug 2019 06:51:11 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 967D72342A; Thu, 29 Aug 2019 10:51:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1567075870; bh=6ZTbBvYvBxAA5ThjBoEmBwgFxQiPy3QjeGMo/nvlzno=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qQyzEaGEUJI4Gl79HKHxlbkPUlbBcUfpPhiyFG9QhImYgVNP8T4LmjXG7RsMdf8Iq B9ljpgX939DVVGyJS5Gn0sufrT2GD6MYMwbzVrwFJB4aFzQQHKmA8qsEMZCX2FHgEx 5CVXLz6YRvj5taw0aRfDY1dVNUasBCueHMRrJuDg= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Nathan Chancellor , Stephen Boyd , Sasha Levin , linux-samsung-soc@vger.kernel.org, linux-clk@vger.kernel.org Subject: [PATCH AUTOSEL 4.9 8/8] clk: s2mps11: Add used attribute to s2mps11_dt_match Date: Thu, 29 Aug 2019 06:51:00 -0400 Message-Id: <20190829105100.2649-8-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190829105100.2649-1-sashal@kernel.org> References: <20190829105100.2649-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Nathan Chancellor [ Upstream commit 9c940bbe2bb47e03ca5e937d30b6a50bf9c0e671 ] Clang warns after commit 8985167ecf57 ("clk: s2mps11: Fix matching when built as module and DT node contains compatible"): drivers/clk/clk-s2mps11.c:242:34: warning: variable 's2mps11_dt_match' is not needed and will not be emitted [-Wunneeded-internal-declaration] static const struct of_device_id s2mps11_dt_match[] = { ^ 1 warning generated. This warning happens when a variable is used in some construct that doesn't require a reference to that variable to be emitted in the symbol table; in this case, it's MODULE_DEVICE_TABLE, which only needs to hold the data of the variable, not the variable itself. $ nm -S drivers/clk/clk-s2mps11.o | rg s2mps11_dt_match 00000078 000003d4 R __mod_of__s2mps11_dt_match_device_table Normally, with device ID table variables, it means that the variable just needs to be tied to the device declaration at the bottom of the file, like s2mps11_clk_id: $ nm -S drivers/clk/clk-s2mps11.o | rg s2mps11_clk_id 00000000 00000078 R __mod_platform__s2mps11_clk_id_device_table 00000000 00000078 r s2mps11_clk_id However, because the comment above this deliberately doesn't want this variable added to .of_match_table, we need to mark s2mps11_dt_match as __used to silence this warning. This makes it clear to Clang that the variable is used for something, even if a reference to it isn't being emitted. Signed-off-by: Nathan Chancellor Fixes: 8985167ecf57 ("clk: s2mps11: Fix matching when built as module and DT node contains compatible") Signed-off-by: Stephen Boyd Signed-off-by: Sasha Levin --- drivers/clk/clk-s2mps11.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/clk/clk-s2mps11.c b/drivers/clk/clk-s2mps11.c index 14071a57c9262..f5d74e8db4327 100644 --- a/drivers/clk/clk-s2mps11.c +++ b/drivers/clk/clk-s2mps11.c @@ -255,7 +255,7 @@ MODULE_DEVICE_TABLE(platform, s2mps11_clk_id); * This requires of_device_id table. In the same time this will not change the * actual *device* matching so do not add .of_match_table. */ -static const struct of_device_id s2mps11_dt_match[] = { +static const struct of_device_id s2mps11_dt_match[] __used = { { .compatible = "samsung,s2mps11-clk", .data = (void *)S2MPS11X, -- 2.20.1