[PATCH v2 03/19 5.15.y] minmax: deduplicate __unconst_integer_typeof()
From: Eliav Farber <hidden>
Date: 2025-10-03 13:02:06
Also in:
amd-gfx, dri-devel, linux-arm-msm, linux-btrfs, linux-edac, linux-ext4, linux-hwmon, linux-kselftest, linux-media, linux-mm, linux-scsi, linux-staging, linux-sunxi, linux-um, lkml, netdev, netfilter-devel, platform-driver-x86, stable
Subsystem:
the rest · Maintainer:
Linus Torvalds
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com> [ Upstream commit 5e57418a2031cd5e1863efdf3d7447a16a368172 ] It appears that compiler_types.h already have an implementation of the __unconst_integer_typeof() called __unqual_scalar_typeof(). Use it instead of the copy. Link: https://lkml.kernel.org/r/20230911154913.4176033-1-andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Herve Codina <herve.codina@bootlin.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Eliav Farber <redacted> --- include/linux/minmax.h | 25 ++----------------------- 1 file changed, 2 insertions(+), 23 deletions(-)
diff --git a/include/linux/minmax.h b/include/linux/minmax.h
index aac0b7d23768..62b0c0a3cf30 100644
--- a/include/linux/minmax.h
+++ b/include/linux/minmax.h@@ -168,27 +168,6 @@ */ #define max_t(type, x, y) __careful_cmp(max, (type)(x), (type)(y)) -/* - * Remove a const qualifier from integer types - * _Generic(foo, type-name: association, ..., default: association) performs a - * comparison against the foo type (not the qualified type). - * Do not use the const keyword in the type-name as it will not match the - * unqualified type of foo. - */ -#define __unconst_integer_type_cases(type) \ - unsigned type: (unsigned type)0, \ - signed type: (signed type)0 - -#define __unconst_integer_typeof(x) typeof( \ - _Generic((x), \ - char: (char)0, \ - __unconst_integer_type_cases(char), \ - __unconst_integer_type_cases(short), \ - __unconst_integer_type_cases(int), \ - __unconst_integer_type_cases(long), \ - __unconst_integer_type_cases(long long), \ - default: (x))) - /* * Do not check the array parameter using __must_be_array(). * In the following legit use-case where the "array" passed is a simple pointer,
@@ -203,13 +182,13 @@ * 'int *buff' and 'int buff[N]' types. * * The array can be an array of const items. - * typeof() keeps the const qualifier. Use __unconst_integer_typeof() in order + * typeof() keeps the const qualifier. Use __unqual_scalar_typeof() in order * to discard the const qualifier for the __element variable. */ #define __minmax_array(op, array, len) ({ \ typeof(&(array)[0]) __array = (array); \ typeof(len) __len = (len); \ - __unconst_integer_typeof(__array[0]) __element = __array[--__len]; \ + __unqual_scalar_typeof(__array[0]) __element = __array[--__len];\ while (__len--) \ __element = op(__element, __array[__len]); \ __element; })
--
2.47.3