* Re: [PATCH v3] dmaengine: dw-axi-dmac: convert to clk bulk APIs
[not found] <20260902013016.3381788-1-dayou5941@163.com>
@ 2026-09-02 19:48 ` kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-09-02 19:48 UTC (permalink / raw)
To: Li Youhong, Eugeniy.Paltsev, vkoul
Cc: llvm, oe-kbuild-all, Frank.Li, dmaengine, Li Youhong, Frank Li
Hi Li,
kernel test robot noticed the following build warnings:
[auto build test WARNING on vkoul-dmaengine/next]
[also build test WARNING on linus/master v7.3-rc1 next-20260902]
[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/Li-Youhong/dmaengine-dw-axi-dmac-convert-to-clk-bulk-APIs/20260902-093016
base: https://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git next
patch link: https://lore.kernel.org/r/20260902013016.3381788-1-dayou5941%40163.com
patch subject: [PATCH v3] dmaengine: dw-axi-dmac: convert to clk bulk APIs
config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20260903/202609030325.ALAaghFW-lkp@intel.com/config)
compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project ed1626b9d0eaf7c406f44da5fb595ad94559f54b)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260903/202609030325.ALAaghFW-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 <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202609030325.ALAaghFW-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c:1638:2: warning: ignoring return value of function declared with 'warn_unused_result' attribute [-Wunused-result]
1638 | clk_bulk_prepare_enable(DW_AXI_DMA_MAX_CLKS, chip->clks);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.
vim +/warn_unused_result +1638 drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
1629
1630 static void dw_remove(struct platform_device *pdev)
1631 {
1632 struct axi_dma_chip *chip = platform_get_drvdata(pdev);
1633 struct dw_axi_dma *dw = chip->dw;
1634 struct axi_dma_chan *chan, *_chan;
1635 u32 i;
1636
1637 /* Enable clk before accessing to registers */
> 1638 clk_bulk_prepare_enable(DW_AXI_DMA_MAX_CLKS, chip->clks);
1639 axi_dma_irq_disable(chip);
1640 for (i = 0; i < dw->hdata->nr_channels; i++) {
1641 axi_chan_disable(&chip->dw->chan[i]);
1642 axi_chan_irq_disable(&chip->dw->chan[i], DWAXIDMAC_IRQ_ALL);
1643 }
1644 axi_dma_disable(chip);
1645
1646 pm_runtime_disable(chip->dev);
1647 axi_dma_suspend(chip);
1648
1649 for (i = 0; i < DMAC_MAX_CHANNELS; i++)
1650 if (chip->irq[i] > 0)
1651 devm_free_irq(chip->dev, chip->irq[i], chip);
1652
1653 of_dma_controller_free(chip->dev->of_node);
1654
1655 list_for_each_entry_safe(chan, _chan, &dw->dma.channels,
1656 vc.chan.device_node) {
1657 list_del(&chan->vc.chan.device_node);
1658 tasklet_kill(&chan->vc.task);
1659 }
1660 }
1661
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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