On Sat, Jul 08, 2017 at 08:14:51AM +0200, Julia Lawall wrote:
> Please check on the comparison on line 1489.
>
> julia
>
> ---------- Forwarded message ----------
> Date: Sat, 8 Jul 2017 10:13:09 +0800
> From: kbuild test robot <[email protected]>
> To: [email protected]
> Cc: Julia Lawall <[email protected]>
> Subject: Re: [PATCH v2 2/4] dmaengine: Add STM32 MDMA driver
>
> Hi Pierre-Yves,
>
> [auto build test WARNING on linus/master]
> [also build test WARNING on v4.12 next-20170707]
> [if your patch is applied to the wrong git tree, please drop us a note to
> help improve the system]
>
> url:
> https://github.com/0day-ci/linux/commits/Pierre-Yves-MORDRET/Add-STM32-MDMA-driver/20170708-013345
> :::::: branch date: 9 hours ago
> :::::: commit date: 9 hours ago
>
> >> drivers/dma/stm32-mdma.c:1489:5-16: WARNING: Unsigned expression compared
> >> with zero: dmadev -> irq < 0
>
> git remote add linux-review https://github.com/0day-ci/linux
> git remote update linux-review
> git checkout c6b3687d964d5a49aa0f297918bf26f6cb7444db
> vim +1489 drivers/dma/stm32-mdma.c
>
> c6b3687d Pierre-Yves MORDRET 2017-07-06 1473
> BIT(DMA_SLAVE_BUSWIDTH_8_BYTES);
> c6b3687d Pierre-Yves MORDRET 2017-07-06 1474 dd->directions =
> BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV) |
> c6b3687d Pierre-Yves MORDRET 2017-07-06 1475
> BIT(DMA_MEM_TO_MEM);
> c6b3687d Pierre-Yves MORDRET 2017-07-06 1476 dd->residue_granularity
> = DMA_RESIDUE_GRANULARITY_BURST;
> c6b3687d Pierre-Yves MORDRET 2017-07-06 1477 dd->max_burst =
> STM32_MDMA_MAX_BURST;
> c6b3687d Pierre-Yves MORDRET 2017-07-06 1478 dd->dev = &pdev->dev;
> c6b3687d Pierre-Yves MORDRET 2017-07-06 1479
> INIT_LIST_HEAD(&dd->channels);
> c6b3687d Pierre-Yves MORDRET 2017-07-06 1480
> c6b3687d Pierre-Yves MORDRET 2017-07-06 1481 for (i = 0; i <
> dmadev->nr_channels; i++) {
> c6b3687d Pierre-Yves MORDRET 2017-07-06 1482 chan =
> &dmadev->chan[i];
> c6b3687d Pierre-Yves MORDRET 2017-07-06 1483 chan->id = i;
> c6b3687d Pierre-Yves MORDRET 2017-07-06 1484
> chan->vchan.desc_free = stm32_mdma_desc_free;
> c6b3687d Pierre-Yves MORDRET 2017-07-06 1485
> vchan_init(&chan->vchan, dd);
> c6b3687d Pierre-Yves MORDRET 2017-07-06 1486 }
> c6b3687d Pierre-Yves MORDRET 2017-07-06 1487
> c6b3687d Pierre-Yves MORDRET 2017-07-06 1488 dmadev->irq =
> platform_get_irq(pdev, 0);
> c6b3687d Pierre-Yves MORDRET 2017-07-06 @1489 if (dmadev->irq < 0) {
This looks to be the case in current patchset too...
> c6b3687d Pierre-Yves MORDRET 2017-07-06 1490
> dev_err(&pdev->dev, "failed to get IRQ\n");
> c6b3687d Pierre-Yves MORDRET 2017-07-06 1491 return
> dmadev->irq;
> c6b3687d Pierre-Yves MORDRET 2017-07-06 1492 }
> c6b3687d Pierre-Yves MORDRET 2017-07-06 1493
> c6b3687d Pierre-Yves MORDRET 2017-07-06 1494 ret =
> devm_request_irq(&pdev->dev, dmadev->irq, stm32_mdma_irq_handler,
> c6b3687d Pierre-Yves MORDRET 2017-07-06 1495
> 0, dev_name(&pdev->dev), dmadev);
> c6b3687d Pierre-Yves MORDRET 2017-07-06 1496 if (ret) {
> c6b3687d Pierre-Yves MORDRET 2017-07-06 1497
> dev_err(&pdev->dev, "failed to request IRQ\n");
>
> ---
> 0-DAY kernel test infrastructure Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all Intel Corporation
--
~Vinod
