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X-CSE-ConnectionGUID: nhSqrS7pR6Sx6lOwpSRROg== X-CSE-MsgGUID: zsVL/55ITgqFQKQIUMpIIw== X-IronPort-AV: E=McAfee;i="6600,9927,11065"; a="10720746" X-IronPort-AV: E=Sophos;i="6.07,261,1708416000"; d="scan'208";a="10720746" Received: from fmviesa002.fm.intel.com ([10.60.135.142]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 May 2024 04:09:31 -0700 X-CSE-ConnectionGUID: ZrOBaoG9Sdiqh7Rw7qH+sw== X-CSE-MsgGUID: 36gEx8TfSX+QnqxwlLRF2A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,261,1708416000"; d="scan'208";a="51682325" Received: from lkp-server01.sh.intel.com (HELO f8b243fe6e68) ([10.239.97.150]) by fmviesa002.fm.intel.com with ESMTP; 07 May 2024 04:09:28 -0700 Received: from kbuild by f8b243fe6e68 with local (Exim 4.96) (envelope-from ) id 1s4IhJ-0001qH-35; Tue, 07 May 2024 11:09:25 +0000 Date: Tue, 7 May 2024 19:08:33 +0800 From: kernel test robot To: Michael Grzeschik , Thinh Nguyen , Greg Kroah-Hartman Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, michael.riesch@wolfvision.net, kernel@pengutronix.de, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Michael Grzeschik Subject: Re: [PATCH] usb: dwc3: gadget: create per ep interrupts Message-ID: <202405071800.omy5Ou1D-lkp@intel.com> References: <20240507-dwc3_per_ep_irqthread-v1-1-f14dec6de19f@pengutronix.de> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240507-dwc3_per_ep_irqthread-v1-1-f14dec6de19f@pengutronix.de> Hi Michael, kernel test robot noticed the following build warnings: [auto build test WARNING on dd5a440a31fae6e459c0d6271dddd62825505361] url: https://github.com/intel-lab-lkp/linux/commits/Michael-Grzeschik/usb-dwc3-gadget-create-per-ep-interrupts/20240507-070804 base: dd5a440a31fae6e459c0d6271dddd62825505361 patch link: https://lore.kernel.org/r/20240507-dwc3_per_ep_irqthread-v1-1-f14dec6de19f%40pengutronix.de patch subject: [PATCH] usb: dwc3: gadget: create per ep interrupts config: x86_64-buildonly-randconfig-001-20240507 (https://download.01.org/0day-ci/archive/20240507/202405071800.omy5Ou1D-lkp@intel.com/config) compiler: clang version 18.1.4 (https://github.com/llvm/llvm-project e6c3289804a67ea0bb6a86fadbe454dd93b8d855) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240507/202405071800.omy5Ou1D-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/202405071800.omy5Ou1D-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/usb/dwc3/gadget.c:1068:6: warning: variable 'count_processed' set but not used [-Wunused-but-set-variable] 1068 | int count_processed = 0; | ^ 1 warning generated. vim +/count_processed +1068 drivers/usb/dwc3/gadget.c 1059 1060 static void dwc3_process_event_entry(struct dwc3 *dwc, 1061 const union dwc3_event *event); 1062 1063 static irqreturn_t dwc3_endpoint_thread_irq(int irq, void *_dep) 1064 { 1065 struct dwc3_ep *dep = _dep; 1066 struct dwc3 *dwc = dep->dwc; 1067 const union dwc3_event *event; > 1068 int count_processed = 0; 1069 u32 event_raw; 1070 unsigned long flags; 1071 1072 dep->givebacks_current_turn = 0; 1073 1074 spin_lock_irqsave(&dep->event_lock, flags); 1075 1076 if (dep->ep_event_flags & DWC3_EP_EVENT_OVERFLOW) { 1077 dev_err(dwc->dev, "ep%d: event buffer overflow\n", dep->number); 1078 dep->ep_event_flags &= ~DWC3_EP_EVENT_OVERFLOW; 1079 } 1080 1081 while (dep->ep_event_r_index != dep->ep_event_w_index) { 1082 1083 event_raw = dep->ep_event_buffer[dep->ep_event_r_index]; 1084 1085 /* 1086 * we have a copy of the event, so we can release the lock 1087 */ 1088 spin_unlock_irqrestore(&dep->event_lock, flags); 1089 1090 event = (const union dwc3_event *) &event_raw; 1091 1092 spin_lock(&dwc->lock); 1093 dwc3_process_event_entry(dwc, event); 1094 spin_unlock(&dwc->lock); 1095 1096 /* 1097 * we need to re-acquire the lock to update the read index 1098 */ 1099 spin_lock_irqsave(&dep->event_lock, flags); 1100 1101 dep->ep_event_r_index = (dep->ep_event_r_index + 1) % 1102 ARRAY_SIZE(dep->ep_event_buffer); 1103 1104 count_processed += 1; 1105 } 1106 1107 spin_unlock_irqrestore(&dep->event_lock, flags); 1108 1109 return IRQ_HANDLED; 1110 } 1111 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki