drivers/media/platform/verisilicon/hantro_drv.c:618:34: warning: unused variable 'of_hantro_match'

From: kernel test robot
Date: Wed Feb 08 2023 - 23:15:53 EST

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Hi Ezequiel,

First bad commit (maybe != root cause):

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 0983f6bf2bfc0789b51ddf7315f644ff4da50acb
commit: fbb6c848dd89786fe24856ee6b5e773910ded29c media: destage Hantro VPU driver
date: 5 months ago
config: s390-randconfig-r014-20230209 (https://download.01.org/0day-ci/archive/20230209/202302091243.rvRjqigX-lkp@xxxxxxxxx/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project db0e6591612b53910a1b366863348bdb9d7d2fb1)
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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fbb6c848dd89786fe24856ee6b5e773910ded29c
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout fbb6c848dd89786fe24856ee6b5e773910ded29c
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash drivers/media/platform/verisilicon/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Link: https://lore.kernel.org/oe-kbuild-all/202302091243.rvRjqigX-lkp@xxxxxxxxx

All warnings (new ones prefixed by >>):

In file included from drivers/media/platform/verisilicon/hantro_drv.c:23:
In file included from include/media/v4l2-mem2mem.h:16:
In file included from include/media/videobuf2-v4l2.h:16:
In file included from include/media/videobuf2-core.h:18:
In file included from include/linux/dma-buf.h:16:
In file included from include/linux/iosys-map.h:10:
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:547:31: 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:560:61: 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/media/platform/verisilicon/hantro_drv.c:23:
In file included from include/media/v4l2-mem2mem.h:16:
In file included from include/media/videobuf2-v4l2.h:16:
In file included from include/media/videobuf2-core.h:18:
In file included from include/linux/dma-buf.h:16:
In file included from include/linux/iosys-map.h:10:
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:573:61: 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/media/platform/verisilicon/hantro_drv.c:23:
In file included from include/media/v4l2-mem2mem.h:16:
In file included from include/media/videobuf2-v4l2.h:16:
In file included from include/media/videobuf2-core.h:18:
In file included from include/linux/dma-buf.h:16:
In file included from include/linux/iosys-map.h:10:
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:584:33: 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:594:59: 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:604:59: 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:692:20: 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:700:20: 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:708:20: 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:717:21: 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:726:21: 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:735:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
>> drivers/media/platform/verisilicon/hantro_drv.c:618:34: warning: unused variable 'of_hantro_match' [-Wunused-const-variable]
static const struct of_device_id of_hantro_match[] = {
^
13 warnings generated.

vim +/of_hantro_match +618 drivers/media/platform/verisilicon/hantro_drv.c

775fec69008d30 drivers/staging/media/rockchip/vpu/rockchip_vpu_drv.c Ezequiel Garcia 2018-12-05 617
a29add8c9bb29d drivers/staging/media/hantro/hantro_drv.c Philipp Zabel 2019-06-12 @618 static const struct of_device_id of_hantro_match[] = {
a29add8c9bb29d drivers/staging/media/hantro/hantro_drv.c Philipp Zabel 2019-06-12 619 #ifdef CONFIG_VIDEO_HANTRO_ROCKCHIP
fb7cb344b96938 drivers/staging/media/hantro/hantro_drv.c Paul Kocialkowski 2021-07-19 620 { .compatible = "rockchip,px30-vpu", .data = &px30_vpu_variant, },
4f34591568e7a1 drivers/staging/media/hantro/hantro_drv.c Alex Bee 2021-06-14 621 { .compatible = "rockchip,rk3036-vpu", .data = &rk3036_vpu_variant, },
78bb1ae5472cab drivers/staging/media/hantro/hantro_drv.c Alex Bee 2021-06-14 622 { .compatible = "rockchip,rk3066-vpu", .data = &rk3066_vpu_variant, },
775fec69008d30 drivers/staging/media/rockchip/vpu/rockchip_vpu_drv.c Ezequiel Garcia 2018-12-05 623 { .compatible = "rockchip,rk3288-vpu", .data = &rk3288_vpu_variant, },
4b898fedeb26c4 drivers/staging/media/hantro/hantro_drv.c Alex Bee 2021-06-14 624 { .compatible = "rockchip,rk3328-vpu", .data = &rk3328_vpu_variant, },
4b898fedeb26c4 drivers/staging/media/hantro/hantro_drv.c Alex Bee 2021-06-14 625 { .compatible = "rockchip,rk3399-vpu", .data = &rk3399_vpu_variant, },
6f1ae821a6c4aa drivers/staging/media/hantro/hantro_drv.c Nicolas Frattaroli 2022-06-12 626 { .compatible = "rockchip,rk3568-vepu", .data = &rk3568_vepu_variant, },
5f6bfab6da6531 drivers/staging/media/hantro/hantro_drv.c Piotr Oniszczuk 2022-02-14 627 { .compatible = "rockchip,rk3568-vpu", .data = &rk3568_vpu_variant, },
8e4aaa68786319 drivers/staging/media/hantro/hantro_drv.c Philipp Zabel 2020-03-20 628 #endif
8e4aaa68786319 drivers/staging/media/hantro/hantro_drv.c Philipp Zabel 2020-03-20 629 #ifdef CONFIG_VIDEO_HANTRO_IMX8M
cf1abc501a5c76 drivers/staging/media/hantro/hantro_drv.c Adam Ford 2022-01-25 630 { .compatible = "nxp,imx8mm-vpu-g1", .data = &imx8mm_vpu_g1_variant, },
8e4aaa68786319 drivers/staging/media/hantro/hantro_drv.c Philipp Zabel 2020-03-20 631 { .compatible = "nxp,imx8mq-vpu", .data = &imx8mq_vpu_variant, },
6971efb70ac3e4 drivers/staging/media/hantro/hantro_drv.c Adam Ford 2022-01-25 632 { .compatible = "nxp,imx8mq-vpu-g1", .data = &imx8mq_vpu_g1_variant },
45040f67504195 drivers/staging/media/hantro/hantro_drv.c Benjamin Gaignard 2021-06-03 633 { .compatible = "nxp,imx8mq-vpu-g2", .data = &imx8mq_vpu_g2_variant },
82ad940c009499 drivers/staging/media/hantro/hantro_drv.c Emil Velikov 2021-04-01 634 #endif
82ad940c009499 drivers/staging/media/hantro/hantro_drv.c Emil Velikov 2021-04-01 635 #ifdef CONFIG_VIDEO_HANTRO_SAMA5D4
82ad940c009499 drivers/staging/media/hantro/hantro_drv.c Emil Velikov 2021-04-01 636 { .compatible = "microchip,sama5d4-vdec", .data = &sama5d4_vdec_variant, },
86790a4fdf4b3d drivers/staging/media/hantro/hantro_drv.c Jernej Skrabec 2021-11-29 637 #endif
86790a4fdf4b3d drivers/staging/media/hantro/hantro_drv.c Jernej Skrabec 2021-11-29 638 #ifdef CONFIG_VIDEO_HANTRO_SUNXI
86790a4fdf4b3d drivers/staging/media/hantro/hantro_drv.c Jernej Skrabec 2021-11-29 639 { .compatible = "allwinner,sun50i-h6-vpu-g2", .data = &sunxi_vpu_variant, },
a29add8c9bb29d drivers/staging/media/hantro/hantro_drv.c Philipp Zabel 2019-06-12 640 #endif
775fec69008d30 drivers/staging/media/rockchip/vpu/rockchip_vpu_drv.c Ezequiel Garcia 2018-12-05 641 { /* sentinel */ }
775fec69008d30 drivers/staging/media/rockchip/vpu/rockchip_vpu_drv.c Ezequiel Garcia 2018-12-05 642 };
a29add8c9bb29d drivers/staging/media/hantro/hantro_drv.c Philipp Zabel 2019-06-12 643 MODULE_DEVICE_TABLE(of, of_hantro_match);
775fec69008d30 drivers/staging/media/rockchip/vpu/rockchip_vpu_drv.c Ezequiel Garcia 2018-12-05 644

:::::: The code at line 618 was first introduced by commit
:::::: a29add8c9bb29dfa8dc47c71b2702e9cc4f332a6 media: rockchip/vpu: rename from rockchip to hantro

:::::: TO: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
:::::: CC: Mauro Carvalho Chehab <mchehab+samsung@xxxxxxxxxx>

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests

Next message: Yi Liu: "[PATCH 0/6] iommufd: Add iommu capability reporting"
Previous message: Andrew Morton: "Re: [syzbot] BUG: unable to handle kernel paging request in folio_flags"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]