linux-kernel - Re: [PATCH v5 06/11] remoteproc: stm32: Properly set co-processor state when attaching

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Date:   Wed, 15 Jul 2020 16:19:07 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     kernel test robot <lkp@...el.com>
Cc:     Ohad Ben-Cohen <ohad@...ery.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Loic PALLARDY <loic.pallardy@...com>,
        Arnaud POULIQUEN <arnaud.pouliquen@...com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre TORGUE <alexandre.torgue@...com>,
        kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        linux-remoteproc <linux-remoteproc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-stm32@...md-mailman.stormreply.com
Subject: Re: [PATCH v5 06/11] remoteproc: stm32: Properly set co-processor
 state when attaching

Hi Robot,

On Tue, 14 Jul 2020 at 14:31, kernel test robot <lkp@...el.com> wrote:
>
> Hi Mathieu,
>
> I love your patch! Yet something to improve:
>
> [auto build test ERROR on linux/master]
> [also build test ERROR on linus/master v5.8-rc5 next-20200714]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use  as documented in
> https://git-scm.com/docs/git-format-patch]
>
> url:    https://github.com/0day-ci/linux/commits/Mathieu-Poirier/remoteproc-stm32-Add-support-for-attaching-to-M4/20200708-053515
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 9ebcfadb0610322ac537dd7aa5d9cbc2b2894c68
> config: arm-randconfig-r011-20200714 (attached as .config)
> compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 02946de3802d3bc65bc9f2eb9b8d4969b5a7add8)
> reproduce (this is a W=1 build):
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # install arm cross compiling tool for clang build
>         # apt-get install binutils-arm-linux-gnueabi
>         # save the attached .config to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>
>
> All errors (new ones prefixed by >>):
>
> >> drivers/remoteproc/stm32_rproc.c:697:18: error: use of undeclared identifier 'RPROC_DETACHED'
>                    rproc->state = RPROC_DETACHED;
>                                   ^
>    1 error generated.

This patchset depends on this one [1], something that is clearly
stated in the cover letter.  Compiling this set on top of [1]
generates no error.

[1]. https://patchwork.kernel.org/project/linux-remoteproc/list/?series=318275

>
> vim +/RPROC_DETACHED +697 drivers/remoteproc/stm32_rproc.c
>
>    661
>    662
>    663  static int stm32_rproc_probe(struct platform_device *pdev)
>    664  {
>    665          struct device *dev = &pdev->dev;
>    666          struct stm32_rproc *ddata;
>    667          struct device_node *np = dev->of_node;
>    668          struct rproc *rproc;
>    669          unsigned int state;
>    670          int ret;
>    671
>    672          ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(32));
>    673          if (ret)
>    674                  return ret;
>    675
>    676          rproc = rproc_alloc(dev, np->name, &st_rproc_ops, NULL, sizeof(*ddata));
>    677          if (!rproc)
>    678                  return -ENOMEM;
>    679
>    680          ddata = rproc->priv;
>    681
>    682          rproc_coredump_set_elf_info(rproc, ELFCLASS32, EM_NONE);
>    683
>    684          ret = stm32_rproc_parse_dt(pdev, ddata, &rproc->auto_boot);
>    685          if (ret)
>    686                  goto free_rproc;
>    687
>    688          ret = stm32_rproc_of_memory_translations(pdev, ddata);
>    689          if (ret)
>    690                  goto free_rproc;
>    691
>    692          ret = stm32_rproc_get_m4_status(ddata, &state);
>    693          if (ret)
>    694                  goto free_rproc;
>    695
>    696          if (state == M4_STATE_CRUN)
>  > 697                  rproc->state = RPROC_DETACHED;
>    698
>    699          rproc->has_iommu = false;
>    700          ddata->workqueue = create_workqueue(dev_name(dev));
>    701          if (!ddata->workqueue) {
>    702                  dev_err(dev, "cannot create workqueue\n");
>    703                  ret = -ENOMEM;
>    704                  goto free_rproc;
>    705          }
>    706
>    707          platform_set_drvdata(pdev, rproc);
>    708
>    709          ret = stm32_rproc_request_mbox(rproc);
>    710          if (ret)
>    711                  goto free_wkq;
>    712
>    713          ret = rproc_add(rproc);
>    714          if (ret)
>    715                  goto free_mb;
>    716
>    717          return 0;
>    718
>    719  free_mb:
>    720          stm32_rproc_free_mbox(rproc);
>    721  free_wkq:
>    722          destroy_workqueue(ddata->workqueue);
>    723  free_rproc:
>    724          if (device_may_wakeup(dev)) {
>    725                  dev_pm_clear_wake_irq(dev);
>    726                  device_init_wakeup(dev, false);
>    727          }
>    728          rproc_free(rproc);
>    729          return ret;
>    730  }
>    731
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org