Hi Robin, kernel test robot noticed the following build warnings: [auto build test WARNING on vkoul-dmaengine/next] [also build test WARNING on linus/master v6.14-rc5 next-20250305] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Robin-Murphy/dt-bindings-dma-Add-Arm-DMA-350/20250301-012733 base: https://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git next patch link: https://lore.kernel.org/r/55e084dd2b5720bdddf503ffac560d111032aa96.1740762136.git.robin.murphy%40arm.com patch subject: [PATCH 2/2] dmaengine: Add Arm DMA-350 driver config: nios2-randconfig-r111-20250306 (https://download.01.org/0day-ci/archive/20250306/202503061910.eJW7M2H3-lkp@xxxxxxxxx/config) compiler: nios2-linux-gcc (GCC) 14.2.0 reproduce: (https://download.01.org/0day-ci/archive/20250306/202503061910.eJW7M2H3-lkp@xxxxxxxxx/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 <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202503061910.eJW7M2H3-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) >> drivers/dma/arm-dma350.c:485:31: sparse: sparse: dubious: !x & y drivers/dma/arm-dma350.c: note: in included file (through include/linux/smp.h, include/linux/lockdep.h, include/linux/spinlock.h, ...): include/linux/list.h:83:21: sparse: sparse: self-comparison always evaluates to true include/linux/list.h:83:21: sparse: sparse: self-comparison always evaluates to true include/linux/list.h:83:21: sparse: sparse: self-comparison always evaluates to true include/linux/list.h:83:21: sparse: sparse: self-comparison always evaluates to true vim +485 drivers/dma/arm-dma350.c 462 463 static irqreturn_t d350_irq(int irq, void *data) 464 { 465 struct d350_chan *dch = data; 466 struct device *dev = dch->vc.chan.device->dev; 467 struct virt_dma_desc *vd = &dch->desc->vd; 468 u32 ch_status; 469 470 ch_status = readl(dch->base + CH_STATUS); 471 if (!ch_status) 472 return IRQ_NONE; 473 474 if (ch_status & CH_STAT_INTR_ERR) { 475 u32 errinfo = readl_relaxed(dch->base + CH_ERRINFO); 476 477 if (errinfo & (CH_ERRINFO_AXIRDPOISERR | CH_ERRINFO_AXIRDRESPERR)) 478 vd->tx_result.result = DMA_TRANS_READ_FAILED; 479 else if (errinfo & CH_ERRINFO_AXIWRRESPERR) 480 vd->tx_result.result = DMA_TRANS_WRITE_FAILED; 481 else 482 vd->tx_result.result = DMA_TRANS_ABORTED; 483 484 vd->tx_result.residue = d350_get_residue(dch); > 485 } else if (!ch_status & CH_STAT_INTR_DONE) { 486 dev_warn(dev, "Unexpected IRQ source? 0x%08x\n", ch_status); 487 } 488 writel_relaxed(ch_status, dch->base + CH_STATUS); 489 490 spin_lock(&dch->vc.lock); 491 vchan_cookie_complete(vd); 492 if (ch_status & CH_STAT_INTR_DONE) { 493 dch->status = DMA_COMPLETE; 494 dch->residue = 0; 495 d350_start_next(dch); 496 } else { 497 dch->status = DMA_ERROR; 498 dch->residue = vd->tx_result.residue; 499 } 500 spin_unlock(&dch->vc.lock); 501 502 return IRQ_HANDLED; 503 } 504 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
