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Tue, 12 Apr 2022 23:08:19 +0000 Date: Wed, 13 Apr 2022 07:07:48 +0800 From: kernel test robot To: Arnd Bergmann Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Greg Ungerer , Sasha Levin Subject: [linux-stable-rc:queue/5.4 7091/9999] drivers/staging/comedi/drivers/comedi_isadma.c:25:17: error: implicit declaration of function 'claim_dma_lock' Message-ID: <202204130751.lUeRF1y2-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Arnd, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git queue/5.4 head: 9185989d84b918f49f720061cedc29c8ed039797 commit: 53a72858bcae7eaa7df8d167dbf60682d70f82a6 [7091/9999] m68knommu: only set CONFIG_ISA_DMA_API for ColdFire sub-arch config: m68k-randconfig-r011-20220412 (https://download.01.org/0day-ci/archive/20220413/202204130751.lUeRF1y2-lkp@intel.com/config) compiler: m68k-linux-gcc (GCC) 11.2.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit/?id=53a72858bcae7eaa7df8d167dbf60682d70f82a6 git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git git fetch --no-tags linux-stable-rc queue/5.4 git checkout 53a72858bcae7eaa7df8d167dbf60682d70f82a6 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=m68k SHELL=/bin/bash drivers/staging/comedi/drivers/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): In file included from arch/m68k/include/asm/bug.h:32, from include/linux/bug.h:5, from include/linux/thread_info.h:12, from include/asm-generic/preempt.h:5, from ./arch/m68k/include/generated/asm/preempt.h:1, from include/linux/preempt.h:78, from include/linux/spinlock.h:51, from include/linux/seqlock.h:36, from include/linux/time.h:6, from include/linux/stat.h:19, from include/linux/module.h:10, from drivers/staging/comedi/drivers/comedi_isadma.c:7: include/linux/dma-mapping.h: In function 'dma_map_resource': arch/m68k/include/asm/page_mm.h:169:50: warning: ordered comparison of pointer with null pointer [-Wextra] 169 | #define virt_addr_valid(kaddr) ((void *)(kaddr) >= (void *)PAGE_OFFSET && (void *)(kaddr) < high_memory) | ^~ include/asm-generic/bug.h:182:32: note: in definition of macro 'WARN_ON' 182 | int __ret_warn_on = !!(condition); \ | ^~~~~~~~~ include/linux/dma-mapping.h:355:13: note: in expansion of macro 'WARN_ON_ONCE' 355 | if (WARN_ON_ONCE(pfn_valid(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~~~ arch/m68k/include/asm/page_mm.h:170:33: note: in expansion of macro 'virt_addr_valid' 170 | #define pfn_valid(pfn) virt_addr_valid(pfn_to_virt(pfn)) | ^~~~~~~~~~~~~~~ include/linux/dma-mapping.h:355:26: note: in expansion of macro 'pfn_valid' 355 | if (WARN_ON_ONCE(pfn_valid(PHYS_PFN(phys_addr)))) | ^~~~~~~~~ drivers/staging/comedi/drivers/comedi_isadma.c: In function 'comedi_isadma_program': >> drivers/staging/comedi/drivers/comedi_isadma.c:25:17: error: implicit declaration of function 'claim_dma_lock' [-Werror=implicit-function-declaration] 25 | flags = claim_dma_lock(); | ^~~~~~~~~~~~~~ >> drivers/staging/comedi/drivers/comedi_isadma.c:31:9: error: implicit declaration of function 'release_dma_lock' [-Werror=implicit-function-declaration] 31 | release_dma_lock(flags); | ^~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/claim_dma_lock +25 drivers/staging/comedi/drivers/comedi_isadma.c 20a1ea7d6ba184a H Hartley Sweeten 2015-01-14 16 20a1ea7d6ba184a H Hartley Sweeten 2015-01-14 17 /** 20a1ea7d6ba184a H Hartley Sweeten 2015-01-14 18 * comedi_isadma_program - program and enable an ISA DMA transfer 20a1ea7d6ba184a H Hartley Sweeten 2015-01-14 19 * @desc: the ISA DMA cookie to program and enable 20a1ea7d6ba184a H Hartley Sweeten 2015-01-14 20 */ 20a1ea7d6ba184a H Hartley Sweeten 2015-01-14 21 void comedi_isadma_program(struct comedi_isadma_desc *desc) 20a1ea7d6ba184a H Hartley Sweeten 2015-01-14 22 { 20a1ea7d6ba184a H Hartley Sweeten 2015-01-14 23 unsigned long flags; 20a1ea7d6ba184a H Hartley Sweeten 2015-01-14 24 20a1ea7d6ba184a H Hartley Sweeten 2015-01-14 @25 flags = claim_dma_lock(); 20a1ea7d6ba184a H Hartley Sweeten 2015-01-14 26 clear_dma_ff(desc->chan); 20a1ea7d6ba184a H Hartley Sweeten 2015-01-14 27 set_dma_mode(desc->chan, desc->mode); 20a1ea7d6ba184a H Hartley Sweeten 2015-01-14 28 set_dma_addr(desc->chan, desc->hw_addr); 20a1ea7d6ba184a H Hartley Sweeten 2015-01-14 29 set_dma_count(desc->chan, desc->size); 20a1ea7d6ba184a H Hartley Sweeten 2015-01-14 30 enable_dma(desc->chan); 20a1ea7d6ba184a H Hartley Sweeten 2015-01-14 @31 release_dma_lock(flags); 20a1ea7d6ba184a H Hartley Sweeten 2015-01-14 32 } 20a1ea7d6ba184a H Hartley Sweeten 2015-01-14 33 EXPORT_SYMBOL_GPL(comedi_isadma_program); 20a1ea7d6ba184a H Hartley Sweeten 2015-01-14 34 :::::: The code at line 25 was first introduced by commit :::::: 20a1ea7d6ba184a1f6e25e85786738003387cada staging: comedi: comedi_isadma: introduce helper module for ISA DMA :::::: TO: H Hartley Sweeten :::::: CC: Greg Kroah-Hartman -- 0-DAY CI Kernel Test Service https://01.org/lkp