linux-kernel - [PATCH] minmax: allow comparisons of 'long long int' against 'unsigned char/short/int'

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Message-Id: <20240107201129.6106-1-zoo868e@gmail.com>
Date: Mon,  8 Jan 2024 04:11:29 +0800
From: Matt Jan <zoo868e@...il.com>
To: Andrew Morton <akpm@...ux-foundation.org>,
	David Laight <David.Laight@...LAB.COM>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Herve Codina <herve.codina@...tlin.com>,
	Mark Brown <broonie@...nel.org>,
	Matt Jan <zoo868e@...il.com>,
	"Matthew Wilcox (Oracle)" <willy@...radead.org>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] minmax: allow comparisons of 'long long int' against 'unsigned char/short/int'

Since 'unsigned int' get promoted to 'signed long long int' it is safe
to compare them against an 'long long int' value.

Signed-off-by: Matt Jan <zoo868e@...il.com>
---
 include/linux/minmax.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/minmax.h b/include/linux/minmax.h
index 2ec559284a9f..61171286b468 100644
--- a/include/linux/minmax.h
+++ b/include/linux/minmax.h
@@ -37,7 +37,7 @@
 
 #define __types_ok(x, y) 					\
 	(__is_signed(x) == __is_signed(y) ||			\
-		__is_signed((x) + 0) == __is_signed((y) + 0) ||	\
+		__is_signed((x) + 0ll) == __is_signed((y) + 0ll) ||	\
 		__is_noneg_int(x) || __is_noneg_int(y))
 
 #define __cmp_op_min <
-- 
2.34.1