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Thu, 04 Dec 2025 23:21:59 -0800 (PST) Received: from localhost ([196.207.164.177]) by smtp.gmail.com with UTF8SMTPSA id 5b1f17b1804b1-4792b12411fsm65146265e9.3.2025.12.04.23.21.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 04 Dec 2025 23:21:59 -0800 (PST) Date: Fri, 5 Dec 2025 10:21:55 +0300 From: Dan Carpenter To: oe-kbuild@lists.linux.dev, Brian Masney , Michael Turquette , Stephen Boyd , Maxime Ripard , Claudiu Beznea , Conor Dooley Cc: lkp@intel.com, oe-kbuild-all@lists.linux.dev, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, Brian Masney Subject: Re: [PATCH v2 3/3] clk: microchip: core: allow driver to be compiled with COMPILE_TEST Message-ID: <202512050233.R9hAWsJN-lkp@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; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251201-clk-microchip-fixes-v2-3-9d5a0daadd98@redhat.com> Hi Brian, kernel test robot noticed the following build warnings: url: https://github.com/intel-lab-lkp/linux/commits/Brian-Masney/clk-microchip-core-remove-duplicate-determine_rate-on-pic32_sclk_ops/20251202-060924 base: 92fd6e84175befa1775e5c0ab682938eca27c0b2 patch link: https://lore.kernel.org/r/20251201-clk-microchip-fixes-v2-3-9d5a0daadd98%40redhat.com patch subject: [PATCH v2 3/3] clk: microchip: core: allow driver to be compiled with COMPILE_TEST config: arm-randconfig-r071-20251204 (https://download.01.org/0day-ci/archive/20251205/202512050233.R9hAWsJN-lkp@intel.com/config) compiler: arm-linux-gnueabi-gcc (GCC) 12.5.0 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/202512050233.R9hAWsJN-lkp@intel.com/ smatch warnings: drivers/clk/microchip/clk-core.c:300 roclk_get_parent() warn: signedness bug returning '(-22)' drivers/clk/microchip/clk-core.c:833 sclk_get_parent() warn: signedness bug returning '(-22)' vim +300 drivers/clk/microchip/clk-core.c ce6e11884659988 Purna Chandra Mandal 2016-05-13 286 static u8 roclk_get_parent(struct clk_hw *hw) ^^ returns a u8. ce6e11884659988 Purna Chandra Mandal 2016-05-13 287 { ce6e11884659988 Purna Chandra Mandal 2016-05-13 288 struct pic32_ref_osc *refo = clkhw_to_refosc(hw); ce6e11884659988 Purna Chandra Mandal 2016-05-13 289 u32 v, i; ce6e11884659988 Purna Chandra Mandal 2016-05-13 290 ce6e11884659988 Purna Chandra Mandal 2016-05-13 291 v = (readl(refo->ctrl_reg) >> REFO_SEL_SHIFT) & REFO_SEL_MASK; ce6e11884659988 Purna Chandra Mandal 2016-05-13 292 ce6e11884659988 Purna Chandra Mandal 2016-05-13 293 if (!refo->parent_map) ce6e11884659988 Purna Chandra Mandal 2016-05-13 294 return v; ce6e11884659988 Purna Chandra Mandal 2016-05-13 295 ce6e11884659988 Purna Chandra Mandal 2016-05-13 296 for (i = 0; i < clk_hw_get_num_parents(hw); i++) ce6e11884659988 Purna Chandra Mandal 2016-05-13 297 if (refo->parent_map[i] == v) ce6e11884659988 Purna Chandra Mandal 2016-05-13 298 return i; ce6e11884659988 Purna Chandra Mandal 2016-05-13 299 ce6e11884659988 Purna Chandra Mandal 2016-05-13 @300 return -EINVAL; ^^^^^^^^^^^^^^^ So it can't return negative error codes. ce6e11884659988 Purna Chandra Mandal 2016-05-13 301 } -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki