From: kernel test robot <lkp@intel.com>
To: Alistair Francis <alistair.francis@wdc.com>
Cc: oe-kbuild-all@lists.linux.dev, 0day robot <lkp@intel.com>
Subject: drivers/scsi/virtio-scsi-pci-epf.c:1058:34: error: implicit declaration of function 'readq'; did you mean 'readl'?
Date: Tue, 08 Sep 2026 15:33:42 +0200 [thread overview]
Message-ID: <202609081542.LblEiwhe-lkp@intel.com> (raw)
tree: https://github.com/intel-lab-lkp/linux/commits/alistair23-gmail-com/virtio_pci-Add-a-quirk-to-force-DMA-Map-API-for-certain-legacy-devices/20260901-114649
head: 3c8cbce2a30d266ce3f5ba5e91de82a74a2ca005
commit: 3c8cbce2a30d266ce3f5ba5e91de82a74a2ca005 scsi: Initial commit of VirtIO PCIe Endpoint Driver
date: 7 days ago
config: xtensa-allyesconfig (https://download.01.org/0day-ci/archive/20260908/202609081542.LblEiwhe-lkp@intel.com/config)
compiler: xtensa-linux-gcc (GCC) 16.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260908/202609081542.LblEiwhe-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202609081542.LblEiwhe-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from include/linux/swab.h:5,
from include/uapi/linux/byteorder/big_endian.h:14,
from include/linux/byteorder/big_endian.h:5,
from arch/xtensa/include/uapi/asm/byteorder.h:8,
from arch/xtensa/include/asm/bitops.h:21,
from include/linux/bitops.h:67,
from include/linux/log2.h:12,
from include/asm-generic/div64.h:55,
from ./arch/xtensa/include/generated/asm/div64.h:1,
from include/linux/math.h:6,
from include/linux/math64.h:6,
from include/linux/time.h:6,
from include/linux/stat.h:19,
from include/linux/configfs.h:22,
from drivers/scsi/virtio-scsi-pci-epf.c:15:
drivers/scsi/virtio-scsi-pci-epf.c: In function 'scsit_pci_epf_read_desc':
>> drivers/scsi/virtio-scsi-pci-epf.c:1058:34: error: implicit declaration of function 'readq'; did you mean 'readl'? [-Wimplicit-function-declaration]
1058 | desc->addr = cpu_to_le64(readq(p + offsetof(struct vring_desc, addr)));
| ^~~~~
include/uapi/linux/swab.h:131:38: note: in definition of macro '__swab64'
131 | (__u64)(__builtin_constant_p(x) ? \
| ^
include/linux/byteorder/generic.h:86:21: note: in expansion of macro '__cpu_to_le64'
86 | #define cpu_to_le64 __cpu_to_le64
| ^~~~~~~~~~~~~
drivers/scsi/virtio-scsi-pci-epf.c:1058:22: note: in expansion of macro 'cpu_to_le64'
1058 | desc->addr = cpu_to_le64(readq(p + offsetof(struct vring_desc, addr)));
| ^~~~~~~~~~~
In file included from drivers/scsi/virtio-scsi-pci-epf.c:23:
drivers/scsi/virtio-scsi-pci-epf.c: At top level:
include/linux/pci_ids.h:19:41: warning: unsigned conversion from 'int' to 'unsigned char' changes value from '256' to '0' [-Woverflow]
19 | #define PCI_CLASS_STORAGE_SCSI 0x0100
| ^~~~~~
drivers/scsi/virtio-scsi-pci-epf.c:2642:27: note: in expansion of macro 'PCI_CLASS_STORAGE_SCSI'
2642 | .subclass_code = PCI_CLASS_STORAGE_SCSI,
| ^~~~~~~~~~~~~~~~~~~~~~
vim +1058 drivers/scsi/virtio-scsi-pci-epf.c
1048
1049 static int scsit_pci_epf_read_desc(struct scsit_pci_epf_vq *vq,
1050 u16 idx, struct vring_desc *desc)
1051 {
1052 void __iomem *p;
1053
1054 if (idx >= vq->depth)
1055 return -EINVAL;
1056
1057 p = vq->desc_map.virt_addr + (size_t)idx * sizeof(struct vring_desc);
> 1058 desc->addr = cpu_to_le64(readq(p + offsetof(struct vring_desc, addr)));
1059 desc->len = cpu_to_le32(readl(p + offsetof(struct vring_desc, len)));
1060 desc->flags = cpu_to_le16(readw(p + offsetof(struct vring_desc, flags)));
1061 desc->next = cpu_to_le16(readw(p + offsetof(struct vring_desc, next)));
1062
1063 return 0;
1064 }
1065
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-09-08 13:34 UTC|newest]
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