From: kernel test robot <lkp@intel.com>
To: linya14x <linx.yang@intel.com>
Cc: oe-kbuild-all@lists.linux.dev, ranjan-dutta <ranjan.dutta@intel.com>
Subject: [intel-lts:6.12/linux 6/6] drivers/media/i2c/lt6911uxc.c:688:36: warning: unused variable 'lt6911uxc_acpi_ids'
Date: Sun, 26 Jan 2025 03:59:11 +0800 [thread overview]
Message-ID: <202501260320.UNdzTOOF-lkp@intel.com> (raw)
tree: https://github.com/intel/linux-intel-lts.git 6.12/linux
head: f90d04942b56016c8b10b96b7ee22e548ecf24cf
commit: 72072f25fc41b9733ada1e6fac144bf5abbf3417 [6/6] media: i2c: add lt6911uxc driver and enable in ipu-bridge
config: hexagon-allyesconfig (https://download.01.org/0day-ci/archive/20250126/202501260320.UNdzTOOF-lkp@intel.com/config)
compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250126/202501260320.UNdzTOOF-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/202501260320.UNdzTOOF-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from drivers/media/i2c/lt6911uxc.c:8:
In file included from include/linux/i2c.h:19:
In file included from include/linux/regulator/consumer.h:35:
In file included from include/linux/suspend.h:5:
In file included from include/linux/swap.h:9:
In file included from include/linux/memcontrol.h:13:
In file included from include/linux/cgroup.h:26:
In file included from include/linux/kernel_stat.h:8:
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:14:
In file included from arch/hexagon/include/asm/io.h:328:
include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
548 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
561 | 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/i2c/lt6911uxc.c:8:
In file included from include/linux/i2c.h:19:
In file included from include/linux/regulator/consumer.h:35:
In file included from include/linux/suspend.h:5:
In file included from include/linux/swap.h:9:
In file included from include/linux/memcontrol.h:13:
In file included from include/linux/cgroup.h:26:
In file included from include/linux/kernel_stat.h:8:
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:14:
In file included from arch/hexagon/include/asm/io.h:328:
include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
574 | 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/i2c/lt6911uxc.c:8:
In file included from include/linux/i2c.h:19:
In file included from include/linux/regulator/consumer.h:35:
In file included from include/linux/suspend.h:5:
In file included from include/linux/swap.h:9:
In file included from include/linux/memcontrol.h:13:
In file included from include/linux/cgroup.h:26:
In file included from include/linux/kernel_stat.h:8:
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:14:
In file included from arch/hexagon/include/asm/io.h:328:
include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
585 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
drivers/media/i2c/lt6911uxc.c:260:30: warning: variable 'fps' is uninitialized when used here [-Wuninitialized]
260 | lt6911uxc->cur_mode->fps = fps;
| ^~~
drivers/media/i2c/lt6911uxc.c:193:33: note: initialize the variable 'fps' to silence this warning
193 | u64 pixel_clk, is_hdmi_2_0, fps, lanes;
| ^
| = 0
drivers/media/i2c/lt6911uxc.c:166:12: warning: unused function 'lt6911uxc_get_audio_sampling_rate' [-Wunused-function]
166 | static int lt6911uxc_get_audio_sampling_rate(struct lt6911uxc *lt6911uxc)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/media/i2c/lt6911uxc.c:688:36: warning: unused variable 'lt6911uxc_acpi_ids' [-Wunused-const-variable]
688 | static const struct acpi_device_id lt6911uxc_acpi_ids[] = {
| ^~~~~~~~~~~~~~~~~~
9 warnings generated.
vim +/lt6911uxc_acpi_ids +688 drivers/media/i2c/lt6911uxc.c
687
> 688 static const struct acpi_device_id lt6911uxc_acpi_ids[] = {
689 { "INTC10B1"},
690 {}
691 };
692 MODULE_DEVICE_TABLE(acpi, lt6911uxc_acpi_ids);
693
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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