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Message-ID: <202408051242.8kGK28W7-lkp@intel.com>
Date: Mon, 5 Aug 2024 12:58:49 +0800
From: kernel test robot <lkp@...el.com>
To: Keguang Zhang via B4 Relay <devnull+keguang.zhang.gmail.com@...nel.org>,
Keguang Zhang <keguang.zhang@...il.com>,
Vinod Koul <vkoul@...nel.org>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk@...nel.org>,
Conor Dooley <conor+dt@...nel.org>
Cc: oe-kbuild-all@...ts.linux.dev, linux-mips@...r.kernel.org,
dmaengine@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, Jiaxun Yang <jiaxun.yang@...goat.com>
Subject: Re: [PATCH v11 2/2] dmaengine: Loongson1: Add Loongson-1 APB DMA
driver
Hi Keguang,
kernel test robot noticed the following build warnings:
[auto build test WARNING on 048d8cb65cde9fe7534eb4440bcfddcf406bb49c]
url: https://github.com/intel-lab-lkp/linux/commits/Keguang-Zhang-via-B4-Relay/dt-bindings-dma-Add-Loongson-1-APB-DMA/20240803-111220
base: 048d8cb65cde9fe7534eb4440bcfddcf406bb49c
patch link: https://lore.kernel.org/r/20240802-loongson1-dma-v11-2-85392357d4e0%40gmail.com
patch subject: [PATCH v11 2/2] dmaengine: Loongson1: Add Loongson-1 APB DMA driver
config: sparc64-randconfig-r063-20240804 (https://download.01.org/0day-ci/archive/20240805/202408051242.8kGK28W7-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240805/202408051242.8kGK28W7-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202408051242.8kGK28W7-lkp@intel.com/
All warnings (new ones prefixed by >>):
drivers/dma/loongson1-apb-dma.c: In function 'ls1x_dma_chan_probe':
>> drivers/dma/loongson1-apb-dma.c:520:34: warning: '%u' directive writing between 1 and 10 bytes into a region of size 2 [-Wformat-overflow=]
520 | sprintf(pdev_irqname, "ch%u", chan_id);
| ^~
drivers/dma/loongson1-apb-dma.c:520:31: note: directive argument in the range [0, 2147483646]
520 | sprintf(pdev_irqname, "ch%u", chan_id);
| ^~~~~~
drivers/dma/loongson1-apb-dma.c:520:9: note: 'sprintf' output between 4 and 13 bytes into a destination of size 4
520 | sprintf(pdev_irqname, "ch%u", chan_id);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +520 drivers/dma/loongson1-apb-dma.c
510
511 static int ls1x_dma_chan_probe(struct platform_device *pdev,
512 struct ls1x_dma *dma, int chan_id)
513 {
514 struct device *dev = &pdev->dev;
515 struct ls1x_dma_chan *chan = &dma->chan[chan_id];
516 char pdev_irqname[4];
517 char *irqname;
518 int ret;
519
> 520 sprintf(pdev_irqname, "ch%u", chan_id);
521 chan->irq = platform_get_irq_byname(pdev, pdev_irqname);
522 if (chan->irq < 0)
523 return -ENODEV;
524
525 irqname = devm_kasprintf(dev, GFP_KERNEL, "%s:%s",
526 dev_name(dev), pdev_irqname);
527 if (!irqname)
528 return -ENOMEM;
529
530 ret = devm_request_irq(dev, chan->irq, ls1x_dma_irq_handler,
531 IRQF_SHARED, irqname, chan);
532 if (ret)
533 return dev_err_probe(dev, ret, "failed to request IRQ %u\n",
534 chan->irq);
535
536 chan->reg_base = dma->reg_base;
537 chan->vchan.desc_free = ls1x_dma_free_desc;
538 vchan_init(&chan->vchan, &dma->ddev);
539 dev_info(dev, "%s (irq %d) initialized\n", pdev_irqname, chan->irq);
540
541 return 0;
542 }
543
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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