linux-kernel - [linux-stable-rc:linux-5.15.y 8999/9999] drivers/infiniband/sw/siw/siw_qp_tx.c:32:37: warning: cast to pointer from integer of different size

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Date:   Thu, 20 Oct 2022 09:14:39 +0800
From:   kernel test robot <lkp@...el.com>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Leon Romanovsky <leon@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [linux-stable-rc:linux-5.15.y 8999/9999]
 drivers/infiniband/sw/siw/siw_qp_tx.c:32:37: warning: cast to pointer from
 integer of different size

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.15.y
head:   09d8385292d080689cb61665ecc365e7494280e7
commit: 4c4eda13641017577e3b7e1d6d23cfd11a56e003 [8999/9999] RDMA/siw: Pass a pointer to virt_to_page()
config: powerpc-randconfig-r006-20221017
compiler: powerpc-linux-gcc (GCC) 12.1.0
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit/?id=4c4eda13641017577e3b7e1d6d23cfd11a56e003
        git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
        git fetch --no-tags linux-stable-rc linux-5.15.y
        git checkout 4c4eda13641017577e3b7e1d6d23cfd11a56e003
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/infiniband/sw/siw/

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

All warnings (new ones prefixed by >>):

   In file included from arch/powerpc/include/asm/page.h:337,
                    from arch/powerpc/include/asm/thread_info.h:13,
                    from include/linux/thread_info.h:60,
                    from include/asm-generic/preempt.h:5,
                    from ./arch/powerpc/include/generated/asm/preempt.h:1,
                    from include/linux/preempt.h:78,
                    from include/linux/percpu.h:6,
                    from include/linux/prandom.h:12,
                    from include/linux/random.h:101,
                    from include/linux/net.h:18,
                    from drivers/infiniband/sw/siw/siw_qp_tx.c:8:
   drivers/infiniband/sw/siw/siw_qp_tx.c: In function 'siw_get_pblpage':
>> drivers/infiniband/sw/siw/siw_qp_tx.c:32:37: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
      32 |                 return virt_to_page((void *)paddr);
         |                                     ^
   include/asm-generic/memory_model.h:18:46: note: in definition of macro '__pfn_to_page'
      18 | #define __pfn_to_page(pfn)      (mem_map + ((pfn) - ARCH_PFN_OFFSET))
         |                                              ^~~
   arch/powerpc/include/asm/page.h:131:34: note: in expansion of macro '__pa'
     131 | #define virt_to_pfn(kaddr)      (__pa(kaddr) >> PAGE_SHIFT)
         |                                  ^~~~
   arch/powerpc/include/asm/page.h:132:45: note: in expansion of macro 'virt_to_pfn'
     132 | #define virt_to_page(kaddr)     pfn_to_page(virt_to_pfn(kaddr))
         |                                             ^~~~~~~~~~~
   drivers/infiniband/sw/siw/siw_qp_tx.c:32:24: note: in expansion of macro 'virt_to_page'
      32 |                 return virt_to_page((void *)paddr);
         |                        ^~~~~~~~~~~~

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for HOTPLUG_CPU
   Depends on [n]: SMP [=y] && (PPC_PSERIES [=n] || PPC_PMAC [=n] || PPC_POWERNV [=n] || FSL_SOC_BOOKE [=n])
   Selected by [y]:
   - PM_SLEEP_SMP [=y] && SMP [=y] && (ARCH_SUSPEND_POSSIBLE [=y] || ARCH_HIBERNATION_POSSIBLE [=y]) && PM_SLEEP [=y]


vim +32 drivers/infiniband/sw/siw/siw_qp_tx.c

     5	
     6	#include <linux/errno.h>
     7	#include <linux/types.h>
   > 8	#include <linux/net.h>
     9	#include <linux/scatterlist.h>
    10	#include <linux/highmem.h>
    11	#include <net/tcp.h>
    12	
    13	#include <rdma/iw_cm.h>
    14	#include <rdma/ib_verbs.h>
    15	#include <rdma/ib_user_verbs.h>
    16	
    17	#include "siw.h"
    18	#include "siw_verbs.h"
    19	#include "siw_mem.h"
    20	
    21	#define MAX_HDR_INLINE					\
    22		(((uint32_t)(sizeof(struct siw_rreq_pkt) -	\
    23			     sizeof(struct iwarp_send))) & 0xF8)
    24	
    25	static struct page *siw_get_pblpage(struct siw_mem *mem, u64 addr, int *idx)
    26	{
    27		struct siw_pbl *pbl = mem->pbl;
    28		u64 offset = addr - mem->va;
    29		dma_addr_t paddr = siw_pbl_get_buffer(pbl, offset, NULL, idx);
    30	
    31		if (paddr)
  > 32			return virt_to_page((void *)paddr);
    33	
    34		return NULL;
    35	}
    36	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

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