drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c:614:36: warning: unused variable 'mtk_jpeg_enc_ioctl_ops'

From: kernel test robot
Date: Tue Jun 06 2023 - 03:52:06 EST

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Hi oushixiong,

FYI, the error/warning still remains.

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: f8dba31b0a826e691949cd4fdfa5c30defaac8c5
commit: 4ae47770d57bff0193fbbf48d56c18759cad5f6e media: mtk-jpegenc: Fix a compilation issue
date: 3 months ago
config: hexagon-buildonly-randconfig-r003-20230606 (https://download.01.org/0day-ci/archive/20230606/202306061523.AFZiNh4D-lkp@xxxxxxxxx/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce (this is a W=1 build):
mkdir -p ~/bin
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/torvalds/linux.git/commit/?id=4ae47770d57bff0193fbbf48d56c18759cad5f6e
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 4ae47770d57bff0193fbbf48d56c18759cad5f6e
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=hexagon olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash arch/hexagon/kernel/ drivers/media/platform/mediatek/jpeg/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202306061523.AFZiNh4D-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

In file included from drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c:11:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
547 | 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]
560 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
| ^
In file included from drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c:11:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
573 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
| ^
In file included from drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c:11:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
584 | __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]
594 | __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]
604 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c:31:28: warning: unused variable 'mtk_jpeg_enc_formats' [-Wunused-variable]
31 | static struct mtk_jpeg_fmt mtk_jpeg_enc_formats[] = {
| ^
drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c:79:28: warning: unused variable 'mtk_jpeg_dec_formats' [-Wunused-variable]
79 | static struct mtk_jpeg_fmt mtk_jpeg_dec_formats[] = {
| ^
>> drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c:614:36: warning: unused variable 'mtk_jpeg_enc_ioctl_ops' [-Wunused-const-variable]
614 | static const struct v4l2_ioctl_ops mtk_jpeg_enc_ioctl_ops = {
| ^
>> drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c:644:36: warning: unused variable 'mtk_jpeg_dec_ioctl_ops' [-Wunused-const-variable]
644 | static const struct v4l2_ioctl_ops mtk_jpeg_dec_ioctl_ops = {
| ^
>> drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c:884:29: warning: unused variable 'mtk_jpeg_dec_qops' [-Wunused-const-variable]
884 | static const struct vb2_ops mtk_jpeg_dec_qops = {
| ^
>> drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c:893:29: warning: unused variable 'mtk_jpeg_enc_qops' [-Wunused-const-variable]
893 | static const struct vb2_ops mtk_jpeg_enc_qops = {
| ^
>> drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c:1366:34: warning: unused variable 'mtk_jpeg_enc_m2m_ops' [-Wunused-const-variable]
1366 | static const struct v4l2_m2m_ops mtk_jpeg_enc_m2m_ops = {
| ^
>> drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c:1370:34: warning: unused variable 'mtk_jpeg_multicore_enc_m2m_ops' [-Wunused-const-variable]
1370 | static const struct v4l2_m2m_ops mtk_jpeg_multicore_enc_m2m_ops = {
| ^
>> drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c:1374:34: warning: unused variable 'mtk_jpeg_multicore_dec_m2m_ops' [-Wunused-const-variable]
1374 | static const struct v4l2_m2m_ops mtk_jpeg_multicore_dec_m2m_ops = {
| ^
>> drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c:1378:34: warning: unused variable 'mtk_jpeg_dec_m2m_ops' [-Wunused-const-variable]
1378 | static const struct v4l2_m2m_ops mtk_jpeg_dec_m2m_ops = {
| ^
drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c:1461:20: warning: unused function 'mtk_jpeg_enc_irq' [-Wunused-function]
1461 | static irqreturn_t mtk_jpeg_enc_irq(int irq, void *priv)
| ^
drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c:1481:20: warning: unused function 'mtk_jpeg_dec_irq' [-Wunused-function]
1481 | static irqreturn_t mtk_jpeg_dec_irq(int irq, void *priv)
| ^
drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c:1645:29: warning: unused variable 'mt8173_jpeg_dec_clocks' [-Wunused-variable]
1645 | static struct clk_bulk_data mt8173_jpeg_dec_clocks[] = {
| ^
drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c:1650:29: warning: unused variable 'mtk_jpeg_clocks' [-Wunused-variable]
1650 | static struct clk_bulk_data mtk_jpeg_clocks[] = {
| ^
20 warnings generated.

vim +/mtk_jpeg_enc_ioctl_ops +614 drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c

52f68114857fe5 drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c kyrie wu 2022-09-29 613
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 @614 static const struct v4l2_ioctl_ops mtk_jpeg_enc_ioctl_ops = {
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 615 .vidioc_querycap = mtk_jpeg_querycap,
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 616 .vidioc_enum_fmt_vid_cap = mtk_jpeg_enum_fmt_vid_cap,
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 617 .vidioc_enum_fmt_vid_out = mtk_jpeg_enum_fmt_vid_out,
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 618 .vidioc_try_fmt_vid_cap_mplane = mtk_jpeg_try_fmt_vid_cap_mplane,
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 619 .vidioc_try_fmt_vid_out_mplane = mtk_jpeg_try_fmt_vid_out_mplane,
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 620 .vidioc_g_fmt_vid_cap_mplane = mtk_jpeg_g_fmt_vid_mplane,
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 621 .vidioc_g_fmt_vid_out_mplane = mtk_jpeg_g_fmt_vid_mplane,
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 622 .vidioc_s_fmt_vid_cap_mplane = mtk_jpeg_s_fmt_vid_cap_mplane,
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 623 .vidioc_s_fmt_vid_out_mplane = mtk_jpeg_s_fmt_vid_out_mplane,
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 624 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 625 .vidioc_subscribe_event = mtk_jpeg_subscribe_event,
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 626 .vidioc_g_selection = mtk_jpeg_enc_g_selection,
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 627 .vidioc_s_selection = mtk_jpeg_enc_s_selection,
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 628
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 629 .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 630 .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 631 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 632 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 633 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 634 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 635 .vidioc_streamon = v4l2_m2m_ioctl_streamon,
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 636 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 637
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 638 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
8f1f08a6337efe drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c kyrie wu 2022-09-29 639
8f1f08a6337efe drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c kyrie wu 2022-09-29 640 .vidioc_encoder_cmd = v4l2_m2m_ioctl_encoder_cmd,
8f1f08a6337efe drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c kyrie wu 2022-09-29 641 .vidioc_try_encoder_cmd = v4l2_m2m_ioctl_try_encoder_cmd,
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 642 };
45f13a57d81344 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 643
2ac8015f156b55 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 @644 static const struct v4l2_ioctl_ops mtk_jpeg_dec_ioctl_ops = {
b2f0d2724ba477 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Rick Chang 2016-12-14 645 .vidioc_querycap = mtk_jpeg_querycap,
7e98b7b542a456 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Boris Brezillon 2019-06-04 646 .vidioc_enum_fmt_vid_cap = mtk_jpeg_enum_fmt_vid_cap,
7e98b7b542a456 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Boris Brezillon 2019-06-04 647 .vidioc_enum_fmt_vid_out = mtk_jpeg_enum_fmt_vid_out,
b2f0d2724ba477 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Rick Chang 2016-12-14 648 .vidioc_try_fmt_vid_cap_mplane = mtk_jpeg_try_fmt_vid_cap_mplane,
b2f0d2724ba477 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Rick Chang 2016-12-14 649 .vidioc_try_fmt_vid_out_mplane = mtk_jpeg_try_fmt_vid_out_mplane,
b2f0d2724ba477 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Rick Chang 2016-12-14 650 .vidioc_g_fmt_vid_cap_mplane = mtk_jpeg_g_fmt_vid_mplane,
b2f0d2724ba477 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Rick Chang 2016-12-14 651 .vidioc_g_fmt_vid_out_mplane = mtk_jpeg_g_fmt_vid_mplane,
b2f0d2724ba477 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Rick Chang 2016-12-14 652 .vidioc_s_fmt_vid_cap_mplane = mtk_jpeg_s_fmt_vid_cap_mplane,
b2f0d2724ba477 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Rick Chang 2016-12-14 653 .vidioc_s_fmt_vid_out_mplane = mtk_jpeg_s_fmt_vid_out_mplane,
52f68114857fe5 drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c kyrie wu 2022-09-29 654 .vidioc_qbuf = mtk_jpeg_qbuf,
b2f0d2724ba477 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Rick Chang 2016-12-14 655 .vidioc_subscribe_event = mtk_jpeg_subscribe_event,
2ac8015f156b55 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Xia Jiang 2020-08-14 656 .vidioc_g_selection = mtk_jpeg_dec_g_selection,
b2f0d2724ba477 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Rick Chang 2016-12-14 657
b2f0d2724ba477 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Rick Chang 2016-12-14 658 .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
b2f0d2724ba477 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Rick Chang 2016-12-14 659 .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
b2f0d2724ba477 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Rick Chang 2016-12-14 660 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
b2f0d2724ba477 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Rick Chang 2016-12-14 661 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
b2f0d2724ba477 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Rick Chang 2016-12-14 662 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
b2f0d2724ba477 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Rick Chang 2016-12-14 663 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
b2f0d2724ba477 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Rick Chang 2016-12-14 664 .vidioc_streamon = v4l2_m2m_ioctl_streamon,
b2f0d2724ba477 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Rick Chang 2016-12-14 665 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
b2f0d2724ba477 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Rick Chang 2016-12-14 666
b2f0d2724ba477 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Rick Chang 2016-12-14 667 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
bf8460d2f4e6a1 drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c kyrie wu 2022-09-29 668
bf8460d2f4e6a1 drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c kyrie wu 2022-09-29 669 .vidioc_decoder_cmd = v4l2_m2m_ioctl_decoder_cmd,
bf8460d2f4e6a1 drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c kyrie wu 2022-09-29 670 .vidioc_try_decoder_cmd = v4l2_m2m_ioctl_try_decoder_cmd,
b2f0d2724ba477 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Rick Chang 2016-12-14 671 };
b2f0d2724ba477 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c Rick Chang 2016-12-14 672

:::::: The code at line 614 was first introduced by commit
:::::: 45f13a57d8134459f02fbee0b1711eddc3260af7 media: platform: Add jpeg enc feature

:::::: TO: Xia Jiang <xia.jiang@xxxxxxxxxxxx>
:::::: CC: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>

--
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