From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.18]) (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 AD71854705B for ; Thu, 15 Oct 2026 03:38:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792035483; cv=none; b=oVp22nplgOmkMKyRFh62uirI9LxhYeRhADFWrNS+A+kKzJOkKzMdOBx78p4vPndX2fs4rNOoAGmgXzmcUFMaiLDvPjDGeeZnBOpZ+BnXeq7U1rtRpQVDq2Fa6j7uUlLlzy1dEingHf9wN2G5Y43qNBI3BKM5Eh3obytv+PZmtYA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792035483; c=relaxed/simple; bh=Fdu+WBTaClHtBZ06M9trkYWo1jdMJl/JNNnr47A4URE=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=CRORk2fyduXaryDa6tfUgVZ82KM1yCTfaOTXeltMQZ0plvhTjVr1dtnQzE8MlEsDup427o8Yfnr+I8iKdGJQW3bUbs+nKbCJUyhUqOWA+Q90r5tQgLCfLgm2omxa0ClA3Tss0kFiC/CJmVour4LhQsMru2MB+VsgIMZ3JKyrvvc= 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=Y6Q3ZIW4; arc=none smtp.client-ip=192.198.163.18 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="Y6Q3ZIW4" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1792035482; x=1823571482; h=date:from:to:cc:subject:message-id:mime-version; bh=Fdu+WBTaClHtBZ06M9trkYWo1jdMJl/JNNnr47A4URE=; b=Y6Q3ZIW4G+p/7hG7oTnpTkGDilXWTp3apfkKfNuDy5xOxQL2/saOnYRb jyAEQaoLE1MkVXe7DuLMVYCjgdYinRNWrnH4YSUyvXpGZQZ4L3i4Ky6ED 6iXC5yWmNaRMkWY6BGmIZsSoGedp6/ARI3zgpgeJ3u2ftCreoY2z5okiP OBhaHo3ksFlHCDB9f9+yvAMQQndQ9NOO+wtKsXJbBwPBIZX3PvDKeSn3p 8yjML33sQqSXkxDk6bGcB+pyTRloSlqwme/n1Xx6JfgG5tjfwrsIL9G+S Vn4WtIiua3ZJBkSfV9p3PujVnveB1L3JyuCpa7eU8Hhm9sWwM8AlVUJ2W Q==; X-CSE-ConnectionGUID: 44mtC8P2TPOb5dK5XV++6w== X-CSE-MsgGUID: i+IUSDGqR52Shr+q6hbyZw== X-IronPort-AV: E=McAfee;i="6800,10657,11935"; a="815985" X-IronPort-AV: E=Sophos;i="6.27,159,1787036400"; d="scan'208";a="815985" Received: from fmviesa009.fm.intel.com ([10.60.135.149]) by fmvoesa112.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Oct 2026 20:38:01 -0700 X-CSE-ConnectionGUID: WJeE7I3PRRG9FmJ7MKeOsg== X-CSE-MsgGUID: lfG/wmrnQzCnEYW9BDKNLw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,159,1787036400"; d="scan'208";a="1925384" Received: from igk-lkp-server01.igk.intel.com (HELO d0de6c2a75a7) ([10.211.93.152]) by fmviesa009.fm.intel.com with ESMTP; 14 Oct 2026 20:38:00 -0700 Received: from kbuild by d0de6c2a75a7 with local (Exim 4.98.2) (envelope-from ) id 1xHCI1-00000000BaR-3Rpi; Thu, 15 Oct 2026 03:37:57 +0000 Date: Thu, 15 Oct 2026 05:37:06 +0200 From: kernel test robot To: oe-kbuild@lists.linux.dev Cc: lkp@intel.com, Dan Carpenter Subject: Re: [PATCH 05/11] usb: misc: Add NVIDIA LSTP USB adapter driver Message-ID: <202610150513.PVaOYpZ8-lkp@intel.com> Precedence: bulk X-Mailing-List: oe-kbuild@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Unfiltered warning: this smatch report is sent as-is and has not been reviewed for false positives, so please treat it with due skepticism. BCC: lkp@intel.com CC: oe-kbuild-all@lists.linux.dev In-Reply-To: <20261012-lstp-usb-adapter-v1-5-aambrozewicz@nvidia.com> References: <20261012-lstp-usb-adapter-v1-5-aambrozewicz@nvidia.com> TO: Adrian Ambrozewicz TO: "Greg Kroah-Hartman" CC: Donald Shannon CC: Jonathan Corbet CC: Shuah Khan CC: Randy Dunlap CC: "Rafael J. Wysocki" CC: Len Brown CC: Kees Cook CC: "Gustavo A. R. Silva" CC: Nathan Chancellor CC: Nick Desaulniers CC: Bill Wendling CC: Justin Stitt CC: Hans de Goede CC: linux-usb@vger.kernel.org CC: linux-kernel@vger.kernel.org CC: linux-doc@vger.kernel.org CC: linux-acpi@vger.kernel.org CC: linux-hardening@vger.kernel.org CC: llvm@lists.linux.dev CC: Sakari Ailus CC: Lixu Zhang CC: Danilo Krummrich CC: driver-core@lists.linux.dev Hi Adrian, kernel test robot noticed the following build warnings: [auto build test WARNING on bbf6b99a57b2479bf51c3c8ad0946f4b8c33ed69] url: https://github.com/intel-lab-lkp/linux/commits/Adrian-Ambrozewicz/dt-bindings-gpio-Add-NVIDIA-LSTP-GPIO/20261012-203559 base: bbf6b99a57b2479bf51c3c8ad0946f4b8c33ed69 patch link: https://lore.kernel.org/r/20261012-lstp-usb-adapter-v1-5-aambrozewicz%40nvidia.com patch subject: [PATCH 05/11] usb: misc: Add NVIDIA LSTP USB adapter driver :::::: branch date: 2 days ago :::::: commit date: 2 days ago config: openrisc-randconfig-r2201-20261015 (https://download.01.org/0day-ci/archive/20261015/202610150513.PVaOYpZ8-lkp@intel.com/config) compiler: or1k-linux-gcc (GCC) 9.5.0 smatch: v0.5.0-9187-g5189e3fb 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 | Reported-by: Dan Carpenter | Closes: https://lore.kernel.org/r/202610150513.PVaOYpZ8-lkp@intel.com/ smatch warnings: drivers/usb/misc/lstp.c:2321 lstp_rx_handle_err() warn: passing zero to 'ERR_PTR' vim +/ERR_PTR +2321 drivers/usb/misc/lstp.c befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2295 befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2296 /* befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2297 * Record @ret for lstp_rx_retry_work() and schedule it after @delay_ms, or befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2298 * signal disconnect on a terminal errno. befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2299 */ befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2300 static void lstp_rx_handle_err(struct lstp_usb *dev, int ret, unsigned long delay_ms) befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2301 { befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2302 struct lstp_rx_retry *rxr = &dev->bulk_rx_retry; befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2303 befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2304 WRITE_ONCE(rxr->last_err, ret); befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2305 befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2306 /* befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2307 * lstp_stop_rx()'s poison (-EPERM), or the device or HCD gone: the befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2308 * expected disconnect, already logged by lstp_disconnect(). befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2309 */ befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2310 if (ret == -ENODEV || ret == -ESHUTDOWN || ret == -EPERM) { befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2311 lstp_signal_disconnect(dev); befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2312 return; befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2313 } befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2314 befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2315 /* Wire-side errors can fire back-to-back; submit-side ones are rare. */ befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2316 if (ret == -EPROTO || ret == -EOVERFLOW || ret == -EILSEQ) befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2317 dev_warn_ratelimited(&dev->intf->dev, befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2318 "%s: RX URB transient error (%pe), retry in %lums\n", __func__, befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2319 ERR_PTR(ret), delay_ms); befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2320 else befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 @2321 dev_warn(&dev->intf->dev, "%s: RX URB transient error (%pe), retry in %lums\n", befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2322 __func__, ERR_PTR(ret), delay_ms); befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2323 befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2324 schedule_delayed_work(&rxr->work, msecs_to_jiffies(delay_ms)); befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2325 } befbcab7be5cfa Adrian Ambrozewicz 2026-10-12 2326 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki