From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.9]) (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 50748223DD1 for ; Sun, 6 Jul 2025 22:14:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.9 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751840095; cv=none; b=LP5ec+r84AIyqwsxZjtq9/uPAJczKtBGVhuyNlJnoMQ4P6If1XAo/19gQ2cM8ccpKYI5MMQHt4idEDUCe8HFMOayYjEXDZK8ei+4MEH2EYiHAPTAOmFXc4+jFrjavTXwgWcqK4QxxTRwpCj+paNP7+whJInSXzvzxWTUqK19RcI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751840095; c=relaxed/simple; bh=6MqFgvDjnix1ZNjql75fA41FRBYAI2GLxcKf9FIqU2w=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=tToA+JjD9U2trGAd1BwaB1AHRD9/pjtGyB7MvvXKZcIhv8pnX5xc8w29LRQJpHZemtLB3a2tShCFcgGiS+ysI+W9Diaj5RPISzOgIzZnxbU+c33xwYKWW0dIRHJ1QLSTdMKjbWCqIBCxzWr01lbqqPfaemSIfGSTUKhMkQX9HKU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=OvV7VXiU; arc=none smtp.client-ip=192.198.163.9 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=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="OvV7VXiU" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1751840094; x=1783376094; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=6MqFgvDjnix1ZNjql75fA41FRBYAI2GLxcKf9FIqU2w=; b=OvV7VXiUiVYNmomhh/U5Tq1SHO5X0oPLnt37CTIFdBL20pBh9P6y+mRb NCjLjDcLNEDSmVFuT4jpe+rYoLtlbU2yr5Kksq/mXkX3EOcVwwrZLozMl /TgII0Ez34EN6N/9UNi2GunG4/xWzr1f7d/M/I/QdULr7hdg7A2Bixgai sH0EghppDC4tRmOGqC5eQJrffRLsMBIsM4TGosbKRRoT1vYVrt2KnPALN h4aHbTcLXFx58c8Bz5R+muslN8A+gYc1FqrqrZJtJREZ7EBdj3GCaO5EY KbiNk36VP7uaXpEwapAosqpHZDcQy7lNLObN4mL7DkXBvfQNMzGdL8E+Y A==; X-CSE-ConnectionGUID: 7JAs3/4mQ3mkO71RfYFmWQ== X-CSE-MsgGUID: pV+4HgfzSrymY1r65Ur3Fw== X-IronPort-AV: E=McAfee;i="6800,10657,11486"; a="64750158" X-IronPort-AV: E=Sophos;i="6.16,292,1744095600"; d="scan'208";a="64750158" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by fmvoesa103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2025 15:14:52 -0700 X-CSE-ConnectionGUID: lLgESG7OSZKqxQee1CsdNQ== X-CSE-MsgGUID: hbjae5esQ8uE6mAjG87dXg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.16,292,1744095600"; d="scan'208";a="186075690" Received: from lkp-server01.sh.intel.com (HELO def1aeed4587) ([10.239.97.150]) by orviesa002.jf.intel.com with ESMTP; 06 Jul 2025 15:14:50 -0700 Received: from kbuild by def1aeed4587 with local (Exim 4.96) (envelope-from ) id 1uYXdH-000017-2f; Sun, 06 Jul 2025 22:14:47 +0000 Date: Mon, 7 Jul 2025 06:13:48 +0800 From: kernel test robot To: Len Bao , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter Cc: oe-kbuild-all@lists.linux.dev, Len Bao , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] drm/dp: Remove dead code after return statement Message-ID: <202507070237.Hwcze8au-lkp@intel.com> References: <20250706162431.15029-1-len.bao@gmx.us> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250706162431.15029-1-len.bao@gmx.us> Hi Len, kernel test robot noticed the following build warnings: [auto build test WARNING on linus/master] [also build test WARNING on v6.16-rc4 next-20250704] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Len-Bao/drm-dp-Remove-dead-code-after-return-statement/20250707-002653 base: linus/master patch link: https://lore.kernel.org/r/20250706162431.15029-1-len.bao%40gmx.us patch subject: [PATCH] drm/dp: Remove dead code after return statement config: arm-randconfig-002-20250707 (https://download.01.org/0day-ci/archive/20250707/202507070237.Hwcze8au-lkp@intel.com/config) compiler: arm-linux-gnueabi-gcc (GCC) 11.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250707/202507070237.Hwcze8au-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202507070237.Hwcze8au-lkp@intel.com/ All warnings (new ones prefixed by >>): drivers/gpu/drm/display/drm_dp_helper.c: In function 'drm_dp_pcon_frl_configure_2': >> drivers/gpu/drm/display/drm_dp_helper.c:3580:13: warning: unused variable 'ret' [-Wunused-variable] 3580 | int ret; | ^~~ vim +/ret +3580 drivers/gpu/drm/display/drm_dp_helper.c ce32a6239de648 drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2020-12-18 3565 ce32a6239de648 drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2020-12-18 3566 /** ce32a6239de648 drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2020-12-18 3567 * drm_dp_pcon_frl_configure_2() - Set HDMI Link configuration Step-2 ce32a6239de648 drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2020-12-18 3568 * @aux: DisplayPort AUX channel ce32a6239de648 drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2020-12-18 3569 * @max_frl_mask : Max FRL BW to be tried by the PCON with HDMI Sink 68a8c645b2538c drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2021-03-23 3570 * @frl_type : FRL training type, can be Extended, or Normal. 68a8c645b2538c drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2021-03-23 3571 * In Normal FRL training, the PCON tries each frl bw from the max_frl_mask 68a8c645b2538c drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2021-03-23 3572 * starting from min, and stops when link training is successful. In Extended 68a8c645b2538c drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2021-03-23 3573 * FRL training, all frl bw selected in the mask are trained by the PCON. ce32a6239de648 drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2020-12-18 3574 * ce32a6239de648 drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2020-12-18 3575 * Returns 0 if success, else returns negative error code. ce32a6239de648 drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2020-12-18 3576 */ ce32a6239de648 drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2020-12-18 3577 int drm_dp_pcon_frl_configure_2(struct drm_dp_aux *aux, int max_frl_mask, 68a8c645b2538c drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2021-03-23 3578 u8 frl_type) ce32a6239de648 drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2020-12-18 3579 { ce32a6239de648 drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2020-12-18 @3580 int ret; ce32a6239de648 drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2020-12-18 3581 u8 buf = max_frl_mask; ce32a6239de648 drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2020-12-18 3582 68a8c645b2538c drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2021-03-23 3583 if (frl_type == DP_PCON_FRL_LINK_TRAIN_EXTENDED) ce32a6239de648 drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2020-12-18 3584 buf |= DP_PCON_FRL_LINK_TRAIN_EXTENDED; 68a8c645b2538c drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2021-03-23 3585 else 68a8c645b2538c drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2021-03-23 3586 buf &= ~DP_PCON_FRL_LINK_TRAIN_EXTENDED; ce32a6239de648 drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2020-12-18 3587 af67978ee37e54 drivers/gpu/drm/display/drm_dp_helper.c Dmitry Baryshkov 2025-03-24 3588 return drm_dp_dpcd_write_byte(aux, DP_PCON_HDMI_LINK_CONFIG_2, buf); ce32a6239de648 drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2020-12-18 3589 } ce32a6239de648 drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2020-12-18 3590 EXPORT_SYMBOL(drm_dp_pcon_frl_configure_2); ce32a6239de648 drivers/gpu/drm/drm_dp_helper.c Ankit Nautiyal 2020-12-18 3591 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki