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charset=us-ascii Content-Disposition: inline tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 4e16367cfe0ce395f29d0482b78970cce8e1db73 commit: 9602a843cb3a16df8930eb9b046aa7aeb769521b [4870/6658] dmaengine: bcm2835-dma: Prevent suspend if DMA channel is busy config: arm-randconfig-004-20250107 (https://download.01.org/0day-ci/archive/20250107/202501071533.yrFb156H-lkp@intel.com/config) compiler: arm-linux-gnueabi-gcc (GCC) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250107/202501071533.yrFb156H-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/202501071533.yrFb156H-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/dma/bcm2835-dma.c:878:12: warning: 'bcm2835_dma_suspend_late' defined but not used [-Wunused-function] 878 | static int bcm2835_dma_suspend_late(struct device *dev) | ^~~~~~~~~~~~~~~~~~~~~~~~ vim +/bcm2835_dma_suspend_late +878 drivers/dma/bcm2835-dma.c 877 > 878 static int bcm2835_dma_suspend_late(struct device *dev) 879 { 880 struct bcm2835_dmadev *od = dev_get_drvdata(dev); 881 struct bcm2835_chan *c, *next; 882 883 list_for_each_entry_safe(c, next, &od->ddev.channels, 884 vc.chan.device_node) { 885 void __iomem *chan_base = c->chan_base; 886 887 /* Check if DMA channel is busy */ 888 if (readl(chan_base + BCM2835_DMA_ADDR)) 889 return -EBUSY; 890 } 891 892 return 0; 893 } 894 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki