This is a note to let you know that I've just added the patch titled
minmax: deduplicate __unconst_integer_typeof()
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
minmax-deduplicate-__unconst_integer_typeof.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From [email protected] Wed Oct 8 17:32:08
>2025
From: Eliav Farber <[email protected]>
Date: Wed, 8 Oct 2025 15:29:28 +0000
Subject: minmax: deduplicate __unconst_integer_typeof()
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Message-ID: <[email protected]>
From: Andy Shevchenko <[email protected]>
[ 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/[email protected]
Signed-off-by: Andy Shevchenko <[email protected]>
Acked-by: Herve Codina <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Eliav Farber <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
include/linux/minmax.h | 25 ++-----------------------
1 file changed, 2 insertions(+), 23 deletions(-)
--- a/include/linux/minmax.h
+++ b/include/linux/minmax.h
@@ -169,27 +169,6 @@
#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,
* __must_be_array() will return a failure.
@@ -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; })
Patches currently in stable-queue which might be from [email protected] are
queue-5.15/minmax-fix-indentation-of-__cmp_once-and-__clamp_once.patch
queue-5.15/minmax-add-in_range-macro.patch
queue-5.15/minmax-deduplicate-__unconst_integer_typeof.patch
queue-5.15/minmax-avoid-overly-complicated-constant-expressions-in-vm-code.patch
queue-5.15/minmax-introduce-min-max-_array.patch
