From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 D79163A3E9C; Wed, 20 May 2026 17:42:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779298971; cv=none; b=FFXEmfTnSUImqlLbQdEPKJehcy+EeMJJ2b0U5QtmoXi3LttJrzjGfToFpEL3c+Ww6Rg97HyCRqjhyL1G1yUnt/3XxxmuBD70tHsSd04SMgc0NYfbIpJucma4I84Qda320l7ZV8E0sbfM1yHw7a5nXDNSRJpN8O7k1LbRFWw5Sd0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779298971; c=relaxed/simple; bh=RTZr2Gjq24uOIHQsRGjN7MwAV9am47Odrwnb1wbxqI4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=YLR8IGiJYcW8b+skiQRPmcpUdo694IO62KRdczJsI7aeqCiP1VpKd116ysghzqmqx4WnJhdg1yBDgd1pYiNFI8h7GnlfBrL7aKc2+LWQ8SsLcAC50ekl/OMu21RZIZjvNaf4GFWrXqUnbT8gDdhzMbHIBXwilYBNa+lNwxFe/oI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=h3woD3y8; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="h3woD3y8" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 49EDB1F000E9; Wed, 20 May 2026 17:42:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1779298969; bh=rAsjejasuV76yPSZsvMjE0VPKMZ6e9g2/sQpRVRDOfw=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=h3woD3y8+XcVUjej330rURepdWo5BRalif8XyQpbPKRHFCoeHEl8S6bBptPKleS93 XwCeJB3OvEmqaO3uLdC8FKCZVjoI8cYRma12HNWGS1Xe8PB3tNBVnr33OOGkguVLDC nlxbZb0Pzvza/ZgfPlnHlRyiBlTgRpZnqJvhyCik= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Arnd Bergmann , Kees Cook , Stephen Boyd , Sasha Levin Subject: [PATCH 6.18 576/957] clk: qoriq: avoid format string warning Date: Wed, 20 May 2026 18:17:39 +0200 Message-ID: <20260520162147.022596329@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260520162134.554764788@linuxfoundation.org> References: <20260520162134.554764788@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Arnd Bergmann [ Upstream commit 096abbb6682ee031a0f5ce9f4c71ead9fa63d31e ] clang-22 warns about the use of non-variadic format arguments passed into snprintf(): drivers/clk/clk-qoriq.c:925:39: error: diagnostic behavior may be improved by adding the 'format(printf, 7, 8)' attribute to the declaration of 'create_mux_common' [-Werror,-Wmissing-format-attribute] 910 | static struct clk * __init create_mux_common(struct clockgen *cg, | __attribute__((format(printf, 7, 8))) 911 | struct mux_hwclock *hwc, 912 | const struct clk_ops *ops, 913 | unsigned long min_rate, 914 | unsigned long max_rate, 915 | unsigned long pct80_rate, 916 | const char *fmt, int idx) 917 | { 918 | struct clk_init_data init = {}; 919 | struct clk *clk; 920 | const struct clockgen_pll_div *div; 921 | const char *parent_names[NUM_MUX_PARENTS]; 922 | char name[32]; 923 | int i, j; 924 | 925 | snprintf(name, sizeof(name), fmt, idx); | ^ drivers/clk/clk-qoriq.c:910:28: note: 'create_mux_common' declared here 910 | static struct clk * __init create_mux_common(struct clockgen *cg, Rework this to pass the 'int idx' as a varargs argument, allowing the format string to be verified at the caller location. Fixes: 0dfc86b3173f ("clk: qoriq: Move chip-specific knowledge into driver") Signed-off-by: Arnd Bergmann Reviewed-by: Kees Cook Signed-off-by: Stephen Boyd Signed-off-by: Sasha Levin --- drivers/clk/clk-qoriq.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/drivers/clk/clk-qoriq.c b/drivers/clk/clk-qoriq.c index a560edeb4b55a..03f9381e26fb7 100644 --- a/drivers/clk/clk-qoriq.c +++ b/drivers/clk/clk-qoriq.c @@ -907,13 +907,11 @@ static const struct clockgen_pll_div *get_pll_div(struct clockgen *cg, return &cg->pll[pll].div[div]; } -static struct clk * __init create_mux_common(struct clockgen *cg, - struct mux_hwclock *hwc, - const struct clk_ops *ops, - unsigned long min_rate, - unsigned long max_rate, - unsigned long pct80_rate, - const char *fmt, int idx) +static struct clk * __init __printf(7, 8) +create_mux_common(struct clockgen *cg, struct mux_hwclock *hwc, + const struct clk_ops *ops, unsigned long min_rate, + unsigned long max_rate, unsigned long pct80_rate, + const char *fmt, ...) { struct clk_init_data init = {}; struct clk *clk; @@ -921,8 +919,11 @@ static struct clk * __init create_mux_common(struct clockgen *cg, const char *parent_names[NUM_MUX_PARENTS]; char name[32]; int i, j; + va_list args; - snprintf(name, sizeof(name), fmt, idx); + va_start(args, fmt); + vsnprintf(name, sizeof(name), fmt, args); + va_end(args); for (i = 0, j = 0; i < NUM_MUX_PARENTS; i++) { unsigned long rate; -- 2.53.0