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Date: Wed, 7 Sep 2022 20:18:41 +0800
From: kernel test robot <lkp@...el.com>
To: Jeff Johnson <quic_jjohnson@...cinc.com>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
linux-kernel@...r.kernel.org,
Manivannan Sadhasivam <mani@...nel.org>
Subject: [mani-mhi:mhi-next 2/3] drivers/bus/mhi/host/pci_generic.c:734:39:
error: cannot assign to variable 'mhi_cntrl_config' with const-qualified
type 'const struct mhi_controller_config *'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/mani/mhi.git mhi-next
head: 0a3b31f6259f4849e4e93731d4c8d7910be072a7
commit: 4a98958ca237a4b7974ea1ec2092b3666bdd26ab [2/3] bus: mhi: host: make mhi_controller_config::event_cfg const
config: arm64-randconfig-r036-20220906
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project c55b41d5199d2394dd6cdb8f52180d8b81d809d4)
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 arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/mani/mhi.git/commit/?id=4a98958ca237a4b7974ea1ec2092b3666bdd26ab
git remote add mani-mhi https://git.kernel.org/pub/scm/linux/kernel/git/mani/mhi.git
git fetch --no-tags mani-mhi mhi-next
git checkout 4a98958ca237a4b7974ea1ec2092b3666bdd26ab
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/bus/mhi/host/
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
>> drivers/bus/mhi/host/pci_generic.c:734:39: error: cannot assign to variable 'mhi_cntrl_config' with const-qualified type 'const struct mhi_controller_config *'
mhi_cntrl_config->event_cfg[i].irq = 0;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^
drivers/bus/mhi/host/pci_generic.c:710:44: note: variable 'mhi_cntrl_config' declared const here
const struct mhi_controller_config *mhi_cntrl_config)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~
1 error generated.
vim +734 drivers/bus/mhi/host/pci_generic.c
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 708
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 709 static int mhi_pci_get_irqs(struct mhi_controller *mhi_cntrl,
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 710 const struct mhi_controller_config *mhi_cntrl_config)
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 711 {
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 712 struct pci_dev *pdev = to_pci_dev(mhi_cntrl->cntrl_dev);
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 713 int nr_vectors, i;
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 714 int *irq;
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 715
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 716 /*
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 717 * Alloc one MSI vector for BHI + one vector per event ring, ideally...
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 718 * No explicit pci_free_irq_vectors required, done by pcim_release.
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 719 */
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 720 mhi_cntrl->nr_irqs = 1 + mhi_cntrl_config->num_events;
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 721
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 722 nr_vectors = pci_alloc_irq_vectors(pdev, 1, mhi_cntrl->nr_irqs, PCI_IRQ_MSI);
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 723 if (nr_vectors < 0) {
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 724 dev_err(&pdev->dev, "Error allocating MSI vectors %d\n",
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 725 nr_vectors);
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 726 return nr_vectors;
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 727 }
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 728
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 729 if (nr_vectors < mhi_cntrl->nr_irqs) {
b91c3b30e22672 drivers/bus/mhi/pci_generic.c Loic Poulain 2021-01-05 730 dev_warn(&pdev->dev, "using shared MSI\n");
b91c3b30e22672 drivers/bus/mhi/pci_generic.c Loic Poulain 2021-01-05 731
b91c3b30e22672 drivers/bus/mhi/pci_generic.c Loic Poulain 2021-01-05 732 /* Patch msi vectors, use only one (shared) */
b91c3b30e22672 drivers/bus/mhi/pci_generic.c Loic Poulain 2021-01-05 733 for (i = 0; i < mhi_cntrl_config->num_events; i++)
b91c3b30e22672 drivers/bus/mhi/pci_generic.c Loic Poulain 2021-01-05 @734 mhi_cntrl_config->event_cfg[i].irq = 0;
b91c3b30e22672 drivers/bus/mhi/pci_generic.c Loic Poulain 2021-01-05 735 mhi_cntrl->nr_irqs = 1;
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 736 }
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 737
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 738 irq = devm_kcalloc(&pdev->dev, mhi_cntrl->nr_irqs, sizeof(int), GFP_KERNEL);
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 739 if (!irq)
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 740 return -ENOMEM;
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 741
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 742 for (i = 0; i < mhi_cntrl->nr_irqs; i++) {
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 743 int vector = i >= nr_vectors ? (nr_vectors - 1) : i;
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 744
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 745 irq[i] = pci_irq_vector(pdev, vector);
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 746 }
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 747
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 748 mhi_cntrl->irq = irq;
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 749
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 750 return 0;
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 751 }
855a70c12021bd drivers/bus/mhi/pci_generic.c Loic Poulain 2020-10-21 752
:::::: The code at line 734 was first introduced by commit
:::::: b91c3b30e2267265cd7e67cb3d0c99c48c02b001 mhi: pci_generic: Fix shared MSI vector support
:::::: TO: Loic Poulain <loic.poulain@...aro.org>
:::::: CC: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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