From: kernel test robot <lkp@intel.com>
To: Joyeta Modak <joyetamdk@gmail.com>,
andy@kernel.org, gregkh@linuxfoundation.org
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org,
linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org,
Joyeta Modak <joyetamdk@gmail.com>
Subject: Re: [PATCH] staging: fbtft: use ARRAY_SIZE() in NUMARGS macro
Date: Wed, 24 Jun 2026 21:02:58 +0800 [thread overview]
Message-ID: <202606242026.MmYHG2FZ-lkp@intel.com> (raw)
In-Reply-To: <20260624073804.4391-1-joyetamdk@gmail.com>
Hi Joyeta,
kernel test robot noticed the following build errors:
[auto build test ERROR on staging/staging-testing]
url: https://github.com/intel-lab-lkp/linux/commits/Joyeta-Modak/staging-fbtft-use-ARRAY_SIZE-in-NUMARGS-macro/20260624-153912
base: staging/staging-testing
patch link: https://lore.kernel.org/r/20260624073804.4391-1-joyetamdk%40gmail.com
patch subject: [PATCH] staging: fbtft: use ARRAY_SIZE() in NUMARGS macro
config: um-randconfig-002-20260624 (https://download.01.org/0day-ci/archive/20260624/202606242026.MmYHG2FZ-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260624/202606242026.MmYHG2FZ-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/202606242026.MmYHG2FZ-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from drivers/staging/fbtft/fb_ili9486.c:13:
In file included from drivers/staging/fbtft/fbtft.h:8:
In file included from include/linux/fb.h:5:
In file included from include/uapi/linux/fb.h:6:
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:27:
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/um/include/asm/hardirq.h:24:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:12:
In file included from arch/um/include/asm/io.h:24:
include/asm-generic/io.h:1209:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
1209 | return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
| ~~~~~~~~~~ ^
>> drivers/staging/fbtft/fb_ili9486.c:51:11: error: initializer element is not a compile-time constant
51 | 0x80 | (par->bgr << 3));
| ~~~~~^~~~~~~~~~~~~~~~~
drivers/staging/fbtft/fbtft.h:240:47: note: expanded from macro 'write_reg'
240 | ((par)->fbtftops.write_register(par, NUMARGS(__VA_ARGS__), __VA_ARGS__))
| ^~~~~~~~~~~
drivers/staging/fbtft/fbtft.h:237:43: note: expanded from macro 'NUMARGS'
237 | #define NUMARGS(...) ARRAY_SIZE(((int[]){__VA_ARGS__}))
| ^~~~~~~~~~~
include/linux/array_size.h:11:75: note: expanded from macro 'ARRAY_SIZE'
11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
| ^~~
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler.h:204:39: note: expanded from macro '__is_array'
204 | #define __is_array(a) (!__same_type((a), &(a)[0]))
| ^
include/linux/compiler_types.h:610:63: note: expanded from macro '__same_type'
610 | #define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
| ^
include/linux/compiler.h:200:84: note: expanded from macro '__BUILD_BUG_ON_ZERO_MSG'
200 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg, ...) ((int)sizeof(struct {_Static_assert(!(e), msg);}))
| ^
drivers/staging/fbtft/fb_ili9486.c:55:11: error: initializer element is not a compile-time constant
55 | 0x20 | (par->bgr << 3));
| ~~~~~^~~~~~~~~~~~~~~~~
drivers/staging/fbtft/fbtft.h:240:47: note: expanded from macro 'write_reg'
240 | ((par)->fbtftops.write_register(par, NUMARGS(__VA_ARGS__), __VA_ARGS__))
| ^~~~~~~~~~~
drivers/staging/fbtft/fbtft.h:237:43: note: expanded from macro 'NUMARGS'
237 | #define NUMARGS(...) ARRAY_SIZE(((int[]){__VA_ARGS__}))
| ^~~~~~~~~~~
include/linux/array_size.h:11:75: note: expanded from macro 'ARRAY_SIZE'
11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
| ^~~
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler.h:204:39: note: expanded from macro '__is_array'
204 | #define __is_array(a) (!__same_type((a), &(a)[0]))
| ^
include/linux/compiler_types.h:610:63: note: expanded from macro '__same_type'
610 | #define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
| ^
include/linux/compiler.h:200:84: note: expanded from macro '__BUILD_BUG_ON_ZERO_MSG'
200 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg, ...) ((int)sizeof(struct {_Static_assert(!(e), msg);}))
| ^
drivers/staging/fbtft/fb_ili9486.c:59:11: error: initializer element is not a compile-time constant
59 | 0x40 | (par->bgr << 3));
| ~~~~~^~~~~~~~~~~~~~~~~
drivers/staging/fbtft/fbtft.h:240:47: note: expanded from macro 'write_reg'
240 | ((par)->fbtftops.write_register(par, NUMARGS(__VA_ARGS__), __VA_ARGS__))
| ^~~~~~~~~~~
drivers/staging/fbtft/fbtft.h:237:43: note: expanded from macro 'NUMARGS'
237 | #define NUMARGS(...) ARRAY_SIZE(((int[]){__VA_ARGS__}))
| ^~~~~~~~~~~
include/linux/array_size.h:11:75: note: expanded from macro 'ARRAY_SIZE'
11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
| ^~~
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler.h:204:39: note: expanded from macro '__is_array'
204 | #define __is_array(a) (!__same_type((a), &(a)[0]))
| ^
include/linux/compiler_types.h:610:63: note: expanded from macro '__same_type'
610 | #define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
| ^
include/linux/compiler.h:200:84: note: expanded from macro '__BUILD_BUG_ON_ZERO_MSG'
200 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg, ...) ((int)sizeof(struct {_Static_assert(!(e), msg);}))
| ^
drivers/staging/fbtft/fb_ili9486.c:63:11: error: initializer element is not a compile-time constant
63 | 0xE0 | (par->bgr << 3));
| ~~~~~^~~~~~~~~~~~~~~~~
drivers/staging/fbtft/fbtft.h:240:47: note: expanded from macro 'write_reg'
240 | ((par)->fbtftops.write_register(par, NUMARGS(__VA_ARGS__), __VA_ARGS__))
| ^~~~~~~~~~~
drivers/staging/fbtft/fbtft.h:237:43: note: expanded from macro 'NUMARGS'
237 | #define NUMARGS(...) ARRAY_SIZE(((int[]){__VA_ARGS__}))
| ^~~~~~~~~~~
include/linux/array_size.h:11:75: note: expanded from macro 'ARRAY_SIZE'
11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
| ^~~
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler.h:204:39: note: expanded from macro '__is_array'
204 | #define __is_array(a) (!__same_type((a), &(a)[0]))
| ^
include/linux/compiler_types.h:610:63: note: expanded from macro '__same_type'
610 | #define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
| ^
include/linux/compiler.h:200:84: note: expanded from macro '__BUILD_BUG_ON_ZERO_MSG'
200 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg, ...) ((int)sizeof(struct {_Static_assert(!(e), msg);}))
| ^
1 warning and 4 errors generated.
--
In file included from drivers/staging/fbtft/fbtft-core.c:18:
In file included from include/linux/fb.h:5:
In file included from include/uapi/linux/fb.h:6:
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:27:
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/um/include/asm/hardirq.h:24:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:12:
In file included from arch/um/include/asm/io.h:24:
include/asm-generic/io.h:1209:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
1209 | return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
| ~~~~~~~~~~ ^
>> drivers/staging/fbtft/fbtft-core.c:204:15: error: initializer element is not a compile-time constant
204 | (xs >> 8) & 0xFF, xs & 0xFF, (xe >> 8) & 0xFF, xe & 0xFF);
| ~~~~~~~~~~^~~~~~
drivers/staging/fbtft/fbtft.h:240:47: note: expanded from macro 'write_reg'
240 | ((par)->fbtftops.write_register(par, NUMARGS(__VA_ARGS__), __VA_ARGS__))
| ^~~~~~~~~~~
drivers/staging/fbtft/fbtft.h:237:43: note: expanded from macro 'NUMARGS'
237 | #define NUMARGS(...) ARRAY_SIZE(((int[]){__VA_ARGS__}))
| ^~~~~~~~~~~
include/linux/array_size.h:11:75: note: expanded from macro 'ARRAY_SIZE'
11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
| ^~~
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler.h:204:39: note: expanded from macro '__is_array'
204 | #define __is_array(a) (!__same_type((a), &(a)[0]))
| ^
include/linux/compiler_types.h:610:63: note: expanded from macro '__same_type'
610 | #define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
| ^
include/linux/compiler.h:200:84: note: expanded from macro '__BUILD_BUG_ON_ZERO_MSG'
200 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg, ...) ((int)sizeof(struct {_Static_assert(!(e), msg);}))
| ^
drivers/staging/fbtft/fbtft-core.c:207:15: error: initializer element is not a compile-time constant
207 | (ys >> 8) & 0xFF, ys & 0xFF, (ye >> 8) & 0xFF, ye & 0xFF);
| ~~~~~~~~~~^~~~~~
drivers/staging/fbtft/fbtft.h:240:47: note: expanded from macro 'write_reg'
240 | ((par)->fbtftops.write_register(par, NUMARGS(__VA_ARGS__), __VA_ARGS__))
| ^~~~~~~~~~~
drivers/staging/fbtft/fbtft.h:237:43: note: expanded from macro 'NUMARGS'
237 | #define NUMARGS(...) ARRAY_SIZE(((int[]){__VA_ARGS__}))
| ^~~~~~~~~~~
include/linux/array_size.h:11:75: note: expanded from macro 'ARRAY_SIZE'
11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
| ^~~
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler.h:204:39: note: expanded from macro '__is_array'
204 | #define __is_array(a) (!__same_type((a), &(a)[0]))
| ^
include/linux/compiler_types.h:610:63: note: expanded from macro '__same_type'
610 | #define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
| ^
include/linux/compiler.h:200:84: note: expanded from macro '__BUILD_BUG_ON_ZERO_MSG'
200 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg, ...) ((int)sizeof(struct {_Static_assert(!(e), msg);}))
| ^
1 warning and 2 errors generated.
--
In file included from drivers/staging/fbtft/fb_upd161704.c:17:
In file included from drivers/staging/fbtft/fbtft.h:8:
In file included from include/linux/fb.h:5:
In file included from include/uapi/linux/fb.h:6:
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:27:
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/um/include/asm/hardirq.h:24:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:12:
In file included from arch/um/include/asm/io.h:24:
include/asm-generic/io.h:1209:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
1209 | return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
| ~~~~~~~~~~ ^
>> drivers/staging/fbtft/fb_upd161704.c:119:26: error: initializer element is not a compile-time constant
119 | write_reg(par, 0x0006, xs);
| ^~
drivers/staging/fbtft/fbtft.h:240:47: note: expanded from macro 'write_reg'
240 | ((par)->fbtftops.write_register(par, NUMARGS(__VA_ARGS__), __VA_ARGS__))
| ^~~~~~~~~~~
drivers/staging/fbtft/fbtft.h:237:43: note: expanded from macro 'NUMARGS'
237 | #define NUMARGS(...) ARRAY_SIZE(((int[]){__VA_ARGS__}))
| ^~~~~~~~~~~
include/linux/array_size.h:11:75: note: expanded from macro 'ARRAY_SIZE'
11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
| ^~~
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler.h:204:39: note: expanded from macro '__is_array'
204 | #define __is_array(a) (!__same_type((a), &(a)[0]))
| ^
include/linux/compiler_types.h:610:63: note: expanded from macro '__same_type'
610 | #define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
| ^
include/linux/compiler.h:200:84: note: expanded from macro '__BUILD_BUG_ON_ZERO_MSG'
200 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg, ...) ((int)sizeof(struct {_Static_assert(!(e), msg);}))
| ^
drivers/staging/fbtft/fb_upd161704.c:120:26: error: initializer element is not a compile-time constant
120 | write_reg(par, 0x0007, ys);
| ^~
drivers/staging/fbtft/fbtft.h:240:47: note: expanded from macro 'write_reg'
240 | ((par)->fbtftops.write_register(par, NUMARGS(__VA_ARGS__), __VA_ARGS__))
| ^~~~~~~~~~~
drivers/staging/fbtft/fbtft.h:237:43: note: expanded from macro 'NUMARGS'
237 | #define NUMARGS(...) ARRAY_SIZE(((int[]){__VA_ARGS__}))
| ^~~~~~~~~~~
include/linux/array_size.h:11:75: note: expanded from macro 'ARRAY_SIZE'
11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
| ^~~
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler.h:204:39: note: expanded from macro '__is_array'
204 | #define __is_array(a) (!__same_type((a), &(a)[0]))
| ^
include/linux/compiler_types.h:610:63: note: expanded from macro '__same_type'
610 | #define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
| ^
include/linux/compiler.h:200:84: note: expanded from macro '__BUILD_BUG_ON_ZERO_MSG'
200 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg, ...) ((int)sizeof(struct {_Static_assert(!(e), msg);}))
| ^
drivers/staging/fbtft/fb_upd161704.c:123:36: error: initializer element is not a compile-time constant
123 | write_reg(par, 0x0006, WIDTH - 1 - xs);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
drivers/staging/fbtft/fbtft.h:240:47: note: expanded from macro 'write_reg'
240 | ((par)->fbtftops.write_register(par, NUMARGS(__VA_ARGS__), __VA_ARGS__))
| ~~~~~~~~^~~~~~~~~~~~
drivers/staging/fbtft/fbtft.h:237:43: note: expanded from macro 'NUMARGS'
237 | #define NUMARGS(...) ARRAY_SIZE(((int[]){__VA_ARGS__}))
| ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~
include/linux/array_size.h:11:75: note: expanded from macro 'ARRAY_SIZE'
11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
| ~~~~~~~~~~~~~~~~^~~~
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler.h:204:39: note: expanded from macro '__is_array'
204 | #define __is_array(a) (!__same_type((a), &(a)[0]))
| ^
include/linux/compiler_types.h:610:63: note: expanded from macro '__same_type'
610 | #define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
| ^
include/linux/compiler.h:200:84: note: expanded from macro '__BUILD_BUG_ON_ZERO_MSG'
200 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg, ...) ((int)sizeof(struct {_Static_assert(!(e), msg);}))
| ^
drivers/staging/fbtft/fb_upd161704.c:124:37: error: initializer element is not a compile-time constant
124 | write_reg(par, 0x0007, HEIGHT - 1 - ys);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
drivers/staging/fbtft/fbtft.h:240:47: note: expanded from macro 'write_reg'
240 | ((par)->fbtftops.write_register(par, NUMARGS(__VA_ARGS__), __VA_ARGS__))
| ~~~~~~~~^~~~~~~~~~~~
drivers/staging/fbtft/fbtft.h:237:43: note: expanded from macro 'NUMARGS'
237 | #define NUMARGS(...) ARRAY_SIZE(((int[]){__VA_ARGS__}))
| ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~
include/linux/array_size.h:11:75: note: expanded from macro 'ARRAY_SIZE'
11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
| ~~~~~~~~~~~~~~~~^~~~
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler.h:204:39: note: expanded from macro '__is_array'
204 | #define __is_array(a) (!__same_type((a), &(a)[0]))
| ^
include/linux/compiler_types.h:610:63: note: expanded from macro '__same_type'
610 | #define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
| ^
include/linux/compiler.h:200:84: note: expanded from macro '__BUILD_BUG_ON_ZERO_MSG'
200 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg, ...) ((int)sizeof(struct {_Static_assert(!(e), msg);}))
| ^
drivers/staging/fbtft/fb_upd161704.c:127:36: error: initializer element is not a compile-time constant
127 | write_reg(par, 0x0006, WIDTH - 1 - ys);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
drivers/staging/fbtft/fbtft.h:240:47: note: expanded from macro 'write_reg'
240 | ((par)->fbtftops.write_register(par, NUMARGS(__VA_ARGS__), __VA_ARGS__))
| ~~~~~~~~^~~~~~~~~~~~
drivers/staging/fbtft/fbtft.h:237:43: note: expanded from macro 'NUMARGS'
237 | #define NUMARGS(...) ARRAY_SIZE(((int[]){__VA_ARGS__}))
| ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~
include/linux/array_size.h:11:75: note: expanded from macro 'ARRAY_SIZE'
11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
| ~~~~~~~~~~~~~~~~^~~~
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
--
In file included from drivers/staging/fbtft/fb_pcd8544.c:15:
In file included from include/linux/spi/spi.h:17:
In file included from include/linux/scatterlist.h:9:
In file included from arch/um/include/asm/io.h:24:
include/asm-generic/io.h:1209:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
1209 | return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
| ~~~~~~~~~~ ^
>> drivers/staging/fbtft/fb_pcd8544.c:53:17: error: initializer element is not a compile-time constant
53 | write_reg(par, 0x04 | (tc & 0x3));
| ^~~~~~~~~~~~~~~~~
drivers/staging/fbtft/fbtft.h:240:47: note: expanded from macro 'write_reg'
240 | ((par)->fbtftops.write_register(par, NUMARGS(__VA_ARGS__), __VA_ARGS__))
| ^~~~~~~~~~~
drivers/staging/fbtft/fbtft.h:237:43: note: expanded from macro 'NUMARGS'
237 | #define NUMARGS(...) ARRAY_SIZE(((int[]){__VA_ARGS__}))
| ^~~~~~~~~~~
include/linux/array_size.h:11:75: note: expanded from macro 'ARRAY_SIZE'
11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
| ^~~
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler.h:204:39: note: expanded from macro '__is_array'
204 | #define __is_array(a) (!__same_type((a), &(a)[0]))
| ^
include/linux/compiler_types.h:610:63: note: expanded from macro '__same_type'
610 | #define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
| ^
include/linux/compiler.h:200:84: note: expanded from macro '__BUILD_BUG_ON_ZERO_MSG'
200 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg, ...) ((int)sizeof(struct {_Static_assert(!(e), msg);}))
| ^
drivers/staging/fbtft/fb_pcd8544.c:63:17: error: initializer element is not a compile-time constant
63 | write_reg(par, 0x10 | (bs & 0x7));
| ^~~~~~~~~~~~~~~~~
drivers/staging/fbtft/fbtft.h:240:47: note: expanded from macro 'write_reg'
240 | ((par)->fbtftops.write_register(par, NUMARGS(__VA_ARGS__), __VA_ARGS__))
| ^~~~~~~~~~~
drivers/staging/fbtft/fbtft.h:237:43: note: expanded from macro 'NUMARGS'
237 | #define NUMARGS(...) ARRAY_SIZE(((int[]){__VA_ARGS__}))
| ^~~~~~~~~~~
include/linux/array_size.h:11:75: note: expanded from macro 'ARRAY_SIZE'
11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
| ^~~
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler.h:204:39: note: expanded from macro '__is_array'
204 | #define __is_array(a) (!__same_type((a), &(a)[0]))
| ^
include/linux/compiler_types.h:610:63: note: expanded from macro '__same_type'
610 | #define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
| ^
include/linux/compiler.h:200:84: note: expanded from macro '__BUILD_BUG_ON_ZERO_MSG'
200 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg, ...) ((int)sizeof(struct {_Static_assert(!(e), msg);}))
| ^
drivers/staging/fbtft/fb_pcd8544.c:137:17: error: initializer element is not a compile-time constant
137 | write_reg(par, 0x80 | curves[0]);
| ^~~~~~~~~~~~~~~~
drivers/staging/fbtft/fbtft.h:240:47: note: expanded from macro 'write_reg'
240 | ((par)->fbtftops.write_register(par, NUMARGS(__VA_ARGS__), __VA_ARGS__))
| ^~~~~~~~~~~
drivers/staging/fbtft/fbtft.h:237:43: note: expanded from macro 'NUMARGS'
237 | #define NUMARGS(...) ARRAY_SIZE(((int[]){__VA_ARGS__}))
| ^~~~~~~~~~~
include/linux/array_size.h:11:75: note: expanded from macro 'ARRAY_SIZE'
11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
| ^~~
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler.h:204:39: note: expanded from macro '__is_array'
204 | #define __is_array(a) (!__same_type((a), &(a)[0]))
| ^
include/linux/compiler_types.h:610:63: note: expanded from macro '__same_type'
610 | #define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
| ^
include/linux/compiler.h:200:84: note: expanded from macro '__BUILD_BUG_ON_ZERO_MSG'
200 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg, ...) ((int)sizeof(struct {_Static_assert(!(e), msg);}))
| ^
1 warning and 3 errors generated.
..
vim +51 drivers/staging/fbtft/fb_ili9486.c
8d64b032aa71963 Thomas Petazzoni 2014-12-31 45
8d64b032aa71963 Thomas Petazzoni 2014-12-31 46 static int set_var(struct fbtft_par *par)
8d64b032aa71963 Thomas Petazzoni 2014-12-31 47 {
8d64b032aa71963 Thomas Petazzoni 2014-12-31 48 switch (par->info->var.rotate) {
8d64b032aa71963 Thomas Petazzoni 2014-12-31 49 case 0:
49475ed0cbb5623 Priit Laes 2015-12-20 50 write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
49475ed0cbb5623 Priit Laes 2015-12-20 @51 0x80 | (par->bgr << 3));
8d64b032aa71963 Thomas Petazzoni 2014-12-31 52 break;
8d64b032aa71963 Thomas Petazzoni 2014-12-31 53 case 90:
49475ed0cbb5623 Priit Laes 2015-12-20 54 write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
49475ed0cbb5623 Priit Laes 2015-12-20 55 0x20 | (par->bgr << 3));
8d64b032aa71963 Thomas Petazzoni 2014-12-31 56 break;
8d64b032aa71963 Thomas Petazzoni 2014-12-31 57 case 180:
49475ed0cbb5623 Priit Laes 2015-12-20 58 write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
49475ed0cbb5623 Priit Laes 2015-12-20 59 0x40 | (par->bgr << 3));
8d64b032aa71963 Thomas Petazzoni 2014-12-31 60 break;
8d64b032aa71963 Thomas Petazzoni 2014-12-31 61 case 270:
49475ed0cbb5623 Priit Laes 2015-12-20 62 write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
49475ed0cbb5623 Priit Laes 2015-12-20 63 0xE0 | (par->bgr << 3));
8d64b032aa71963 Thomas Petazzoni 2014-12-31 64 break;
8d64b032aa71963 Thomas Petazzoni 2014-12-31 65 default:
8d64b032aa71963 Thomas Petazzoni 2014-12-31 66 break;
8d64b032aa71963 Thomas Petazzoni 2014-12-31 67 }
8d64b032aa71963 Thomas Petazzoni 2014-12-31 68
8d64b032aa71963 Thomas Petazzoni 2014-12-31 69 return 0;
8d64b032aa71963 Thomas Petazzoni 2014-12-31 70 }
8d64b032aa71963 Thomas Petazzoni 2014-12-31 71
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
prev parent reply other threads:[~2026-06-24 13:04 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-24 7:38 [PATCH] staging: fbtft: use ARRAY_SIZE() in NUMARGS macro Joyeta Modak
2026-06-24 11:31 ` Andy Shevchenko
2026-06-24 13:02 ` kernel test robot [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=202606242026.MmYHG2FZ-lkp@intel.com \
--to=lkp@intel.com \
--cc=andy@kernel.org \
--cc=dri-devel@lists.freedesktop.org \
--cc=gregkh@linuxfoundation.org \
--cc=joyetamdk@gmail.com \
--cc=linux-fbdev@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-staging@lists.linux.dev \
--cc=llvm@lists.linux.dev \
--cc=oe-kbuild-all@lists.linux.dev \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.