Re: [PATCH v5 2/3] PCI: qcom: Restrict pci transactions after pci suspend

[kernel test robot <lkp@intel.com>]

Hi Krishna,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on helgaas-pci/next]
[also build test ERROR on next-20220803]
[cannot apply to linus/master v5.19]
[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/Krishna-chaitanya-chundru/PCI-Restrict-pci-transactions-after-pci-suspend/20220803-193033
base:   https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next
config: s390-randconfig-r044-20220804 (https://download.01.org/0day-ci/archive/20220804/202208041800.BLHfNzzW-lkp@intel.com/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 26dd42705c2af0b8f6e5d6cdb32c9bd5ed9524eb)
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 s390 cross compiling tool for clang build
        # apt-get install binutils-s390x-linux-gnu
        # https://github.com/intel-lab-lkp/linux/commit/9e799ab52db3245911b15a8903977d99554d900d
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Krishna-chaitanya-chundru/PCI-Restrict-pci-transactions-after-pci-suspend/20220803-193033
        git checkout 9e799ab52db3245911b15a8903977d99554d900d
        # 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=s390 SHELL=/bin/bash drivers/pci/controller/dwc/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   In file included from drivers/pci/controller/dwc/pcie-designware-host.c:11:
   In file included from include/linux/irqchip/chained_irq.h:10:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/s390/include/asm/io.h:75:
   include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           val = __raw_readb(PCI_IOBASE + addr);
                             ~~~~~~~~~~ ^
   include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
                                                           ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
   #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
                                                             ^
   include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
   #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
                                                        ^
   In file included from drivers/pci/controller/dwc/pcie-designware-host.c:11:
   In file included from include/linux/irqchip/chained_irq.h:10:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/s390/include/asm/io.h:75:
   include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
                                                           ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
   #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
                                                             ^
   include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
   #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
                                                        ^
   In file included from drivers/pci/controller/dwc/pcie-designware-host.c:11:
   In file included from include/linux/irqchip/chained_irq.h:10:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/s390/include/asm/io.h:75:
   include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writeb(value, PCI_IOBASE + addr);
                               ~~~~~~~~~~ ^
   include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
                                                         ~~~~~~~~~~ ^
   include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
                                                         ~~~~~~~~~~ ^
   include/asm-generic/io.h:609:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           readsb(PCI_IOBASE + addr, buffer, count);
                  ~~~~~~~~~~ ^
   include/asm-generic/io.h:617:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           readsw(PCI_IOBASE + addr, buffer, count);
                  ~~~~~~~~~~ ^
   include/asm-generic/io.h:625:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           readsl(PCI_IOBASE + addr, buffer, count);
                  ~~~~~~~~~~ ^
   include/asm-generic/io.h:634:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           writesb(PCI_IOBASE + addr, buffer, count);
                   ~~~~~~~~~~ ^
   include/asm-generic/io.h:643:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           writesw(PCI_IOBASE + addr, buffer, count);
                   ~~~~~~~~~~ ^
   include/asm-generic/io.h:652:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           writesl(PCI_IOBASE + addr, buffer, count);
                   ~~~~~~~~~~ ^
>> drivers/pci/controller/dwc/pcie-designware-host.c:33:24: error: static assertion failed due to requirement '__builtin_types_compatible_p(struct pcie_port, struct dw_pcie_rp) || __builtin_types_compatible_p(struct pcie_port, void)': pointer type mismatch in container_of()
           struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
                                 ^~~~~~~~~~~~~~~~~~~~~~
   drivers/pci/controller/dwc/pcie-designware.h:327:34: note: expanded from macro 'to_dw_pcie_from_pp'
   #define to_dw_pcie_from_pp(port) container_of((port), struct dw_pcie, pp)
                                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/container_of.h:19:2: note: expanded from macro 'container_of'
           static_assert(__same_type(*(ptr), ((type *)0)->member) ||       \
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:77:34: note: expanded from macro 'static_assert'
   #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
                                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:78:41: note: expanded from macro '__static_assert'
   #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
                                           ^              ~~~~
   drivers/pci/controller/dwc/pcie-designware-host.c:44:24: error: static assertion failed due to requirement '__builtin_types_compatible_p(struct pcie_port, struct dw_pcie_rp) || __builtin_types_compatible_p(struct pcie_port, void)': pointer type mismatch in container_of()
           struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
                                 ^~~~~~~~~~~~~~~~~~~~~~
   drivers/pci/controller/dwc/pcie-designware.h:327:34: note: expanded from macro 'to_dw_pcie_from_pp'
   #define to_dw_pcie_from_pp(port) container_of((port), struct dw_pcie, pp)
                                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/container_of.h:19:2: note: expanded from macro 'container_of'
           static_assert(__same_type(*(ptr), ((type *)0)->member) ||       \
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:77:34: note: expanded from macro 'static_assert'
   #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
                                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:78:41: note: expanded from macro '__static_assert'
   #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
                                           ^              ~~~~
   12 warnings and 2 errors generated.


vim +33 drivers/pci/controller/dwc/pcie-designware-host.c

    29	
    30	static void dw_msi_mask_irq(struct irq_data *d)
    31	{
    32		struct pcie_port *pp = irq_data_get_irq_chip_data(d->parent_data);
  > 33		struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
    34	
    35		if (dw_pcie_link_up(pci))
    36			pci_msi_mask_irq(d);
    37	
    38		irq_chip_mask_parent(d);
    39	}
    40	

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