From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.8]) (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 08AEF2BE632 for ; Thu, 4 Dec 2025 10:26:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.8 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764844004; cv=none; b=OXrBzSOzKOgpcxtzJw+3UNvg2WkFI05ZK06u4jsfhEXEfUux2auyb/ZmvU4pUfBcLojljcIz4H3P5uTnGT6bRGl1ZfAiRtyLc7jbskFGm1GsAooRN43mBTZhxXdM/WRvbMwysEUE/IHRF/wu6D3POh1A+yzg59C95dhuBP0hxMI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764844004; c=relaxed/simple; bh=CDuXg1gR8PMLq7Xf2ggOf7LFWCQJhOqps2N6L7CvgV4=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=XB+wYUx/3J09OxdpY+TuSlhvGsZhXfnFfHbhKUTrxzUw2B5qIaJFH8mzkMp11uvsu/TCQCFlmkxwbQ13y6k/3/RILjN8YLNfdla/CqUJ3OGi7H89LEQpdbC3JmcOkyPO4F3mf5GxVtKBaEstn1e2lc1kShpw9JMRyDfszrU+GWs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=EXHuvwVw; arc=none smtp.client-ip=192.198.163.8 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="EXHuvwVw" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1764844003; x=1796380003; h=from:to:cc:subject:in-reply-to:references:date: message-id:mime-version; bh=CDuXg1gR8PMLq7Xf2ggOf7LFWCQJhOqps2N6L7CvgV4=; b=EXHuvwVw9UcSw9rv3ZCFyHXhx7dC4EMeTHIbzL3eK7NBQmKsiJ1aoA// k5XDvKleWK51LbjeTF18MTkcNO27XkmjPA8T1LFEe2hl+z12VasgW3LB5 s6PgVZ54ZYBVXv803VVFCdA87gXLJhcqsP7ePawu8+FZezsmrWqdjiLle gUCSOCGW6z+jCltv1TWiJ2/k9vqSAQPTsSFUqt6bl2zSKxkifYPjg6vcc ZJ76Hh6Do59Et/8V9H4YjnMWVriTPkRG97C/tuayHxvnjzxyXQjulYeK6 UUSTAGMbfnCSpjt2sJvYJrq5DKCw4Rjj8R9nm9DAHjJa3Uqp8wGgpOU4F w==; X-CSE-ConnectionGUID: ht+HNqGNQ8mQFDealQK+bA== X-CSE-MsgGUID: u+MubDboTRmZuqAJh07Dpw== X-IronPort-AV: E=McAfee;i="6800,10657,11631"; a="84460991" X-IronPort-AV: E=Sophos;i="6.20,248,1758610800"; d="scan'208";a="84460991" Received: from fmviesa001.fm.intel.com ([10.60.135.141]) by fmvoesa102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Dec 2025 02:26:42 -0800 X-CSE-ConnectionGUID: ArnHlBx8TNWiwclw+gR6Xw== X-CSE-MsgGUID: jhRM3qpMTZyXwb4u64Z0GA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.20,248,1758610800"; d="scan'208";a="225906223" Received: from mjarzebo-mobl1.ger.corp.intel.com (HELO localhost) ([10.245.246.11]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Dec 2025 02:26:37 -0800 From: Jani Nikula To: Arnd Bergmann , Rodrigo Vivi , Joonas Lahtinen , Tvrtko Ursulin , David Airlie , Simona Vetter , Mika Kahola Cc: Arnd Bergmann , Ville =?utf-8?B?U3lyasOkbMOk?= , Ankit Nautiyal , Suraj Kandpal , Jouni =?utf-8?Q?H=C3=B6gander?= , intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] drm/i915/display: Avoid nonliteral printf format string In-Reply-To: <20251204094401.1029917-1-arnd@kernel.org> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo References: <20251204094401.1029917-1-arnd@kernel.org> Date: Thu, 04 Dec 2025 12:26:34 +0200 Message-ID: <7579ed96424f51f171bee13f387f68c96f2d8a62@intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain On Thu, 04 Dec 2025, Arnd Bergmann wrote: > From: Arnd Bergmann > > pipe_config_mismatch() takes a printf-style format string and arguments, > not a constant string, so this trigers -Wformat warnings when they are > not disabled: > > drivers/gpu/drm/i915/display/intel_display.c: In function 'pipe_config_cx0pll_mismatch': > drivers/gpu/drm/i915/display/intel_display.c:4997:9: error: format not a string literal and no format arguments [-Werror=format-security] > 4997 | pipe_config_mismatch(p, fastset, crtc, name, chipname); > | ^~~~~~~~~~~~~~~~~~~~ > > drivers/gpu/drm/i915/display/intel_display.c: In function 'pipe_config_lt_phy_pll_mismatch': > drivers/gpu/drm/i915/display/intel_display.c:5027:9: error: format not a string literal and no format arguments [-Werror=format-security] > 5027 | pipe_config_mismatch(p, fastset, crtc, name, chipname); > | ^~~~~~~~~~~~~~~~~~~~ > > Use either the string literal or the trivial "%s" format so the compiler can > prove this to be used correctly. > > Fixes: 45fe957ae769 ("drm/i915/display: Add compare config for MTL+ platforms") > Signed-off-by: Arnd Bergmann Unfortunately, this no longer applies to drm-intel-next. pipe_config_cx0pll_mismatch() no longer exists. The 2nd hunk is still valid, though, want to send a rebased version? BR, Jani. > --- > drivers/gpu/drm/i915/display/intel_display.c | 5 ++--- > 1 file changed, 2 insertions(+), 3 deletions(-) > > diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c > index 7b4fd18c60e2..83025d5a4aa9 100644 > --- a/drivers/gpu/drm/i915/display/intel_display.c > +++ b/drivers/gpu/drm/i915/display/intel_display.c > @@ -4987,7 +4987,7 @@ pipe_config_cx0pll_mismatch(struct drm_printer *p, bool fastset, > struct intel_display *display = to_intel_display(crtc); > char *chipname = a->use_c10 ? "C10" : "C20"; > > - pipe_config_mismatch(p, fastset, crtc, name, chipname); > + pipe_config_mismatch(p, fastset, crtc, name, "%s", chipname); > > drm_printf(p, "expected:\n"); > intel_cx0pll_dump_hw_state(display, a); > @@ -5022,9 +5022,8 @@ pipe_config_lt_phy_pll_mismatch(struct drm_printer *p, bool fastset, > const struct intel_lt_phy_pll_state *b) > { > struct intel_display *display = to_intel_display(crtc); > - char *chipname = "LTPHY"; > > - pipe_config_mismatch(p, fastset, crtc, name, chipname); > + pipe_config_mismatch(p, fastset, crtc, name, "LTPHY"); > > drm_printf(p, "expected:\n"); > intel_lt_phy_dump_hw_state(display, a); -- Jani Nikula, Intel