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[73.228.159.35]) by smtp.gmail.com with ESMTPSA id 8926c6da1cb9f-4f505e2eaeesm3188527173.126.2025.04.15.07.16.10 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 15 Apr 2025 07:16:11 -0700 (PDT) Message-ID: <564eb8e7-a4e1-49e6-a79d-da880a526540@riscstar.com> Date: Tue, 15 Apr 2025 09:16:10 -0500 Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [spacemit:for-next 4/6] drivers/clk/spacemit/ccu-k1.c:241:1: error: initializer element is not a compile-time constant To: kernel test robot , Haylen Chu Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, Yixun Lan , Inochi Amaoto References: <202504152107.7ekGPIrF-lkp@intel.com> Content-Language: en-US From: Alex Elder In-Reply-To: <202504152107.7ekGPIrF-lkp@intel.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 4/15/25 8:44 AM, kernel test robot wrote: > tree: https://github.com/spacemit-com/linux for-next > head: 9ead3efbc88a21e9a1f38948cc0902518022a2e5 > commit: e2d238ba301f25a5c8a7d490a36f9cd014d7aecc [4/6] clk: spacemit: Add clock support for SpacemiT K1 SoC > config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20250415/202504152107.7ekGPIrF-lkp@intel.com/config) > compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250415/202504152107.7ekGPIrF-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/202504152107.7ekGPIrF-lkp@intel.com/ > > All errors (new ones prefixed by >>): If I'm interpreting this right, this seems to be a problem on a S390 build (under COMPILE_TEST), because there is no constant version of the __ffs() for that architecture. This might be the case on other architectures as well. On RISC-V, this is fine. Any recommendations on how to address this? -Alex > >>> drivers/clk/spacemit/ccu-k1.c:241:1: error: initializer element is not a compile-time constant > 241 | CCU_DDN_DEFINE(slow_uart1_14p74, pll1_d16_153p6, MPMU_SUCCR, GENMASK(28, 16), GENMASK(12, 0), 0); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/clk/spacemit/ccu_ddn.h:33:15: note: expanded from macro 'CCU_DDN_DEFINE' > 33 | .num_shift = __ffs(_num_mask), \ > | ^~~~~~~~~~~~~~~~ > drivers/clk/spacemit/ccu-k1.c:242:1: error: initializer element is not a compile-time constant > 242 | CCU_DDN_DEFINE(slow_uart2_48, pll1_d4_614p4, MPMU_SUCCR_1, GENMASK(28, 16), GENMASK(12, 0), 0); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/clk/spacemit/ccu_ddn.h:33:15: note: expanded from macro 'CCU_DDN_DEFINE' > 33 | .num_shift = __ffs(_num_mask), \ > | ^~~~~~~~~~~~~~~~ > 2 errors generated. > > > vim +241 drivers/clk/spacemit/ccu-k1.c > > 239 > 240 CCU_GATE_DEFINE(slow_uart, CCU_PARENT_NAME(osc), MPMU_ACGR, BIT(1), CLK_IGNORE_UNUSED); > > 241 CCU_DDN_DEFINE(slow_uart1_14p74, pll1_d16_153p6, MPMU_SUCCR, GENMASK(28, 16), GENMASK(12, 0), 0); > 242 CCU_DDN_DEFINE(slow_uart2_48, pll1_d4_614p4, MPMU_SUCCR_1, GENMASK(28, 16), GENMASK(12, 0), 0); > 243 >