From: Richard Weinberger <richard@nod.at>
Date: Fri, 2 Aug 2024 10:08:43 +0000 (+0200)
Subject: x86: Fix ptrdiff_t for x86_64
X-Git-Url: http://git.dujemihanovic.xyz/img/static/%7B%7B%20%24.Site.BaseURL%20%7D%7Dposts/index.xml?a=commitdiff_plain;h=c17b2a05dd50a3ba437e6373093a0d6a359cdee0;p=u-boot.git

x86: Fix ptrdiff_t for x86_64

sbrk() assumes ptrdiff_t is large enough to enlarge/shrink the heap
by LONG_MIN/LONG_MAX.
So, use the long type, also to match the rest of the Linux ecosystem.

Signed-off-by: Richard Weinberger <richard@nod.at>
Reviewed-by: Simon Glass <sjg@chromium.org>
---

diff --git a/arch/x86/include/asm/posix_types.h b/arch/x86/include/asm/posix_types.h
index dbcea7f47f..e1ed9bcabc 100644
--- a/arch/x86/include/asm/posix_types.h
+++ b/arch/x86/include/asm/posix_types.h
@@ -20,11 +20,12 @@ typedef unsigned short	__kernel_gid_t;
 #if defined(__x86_64__)
 typedef unsigned long	__kernel_size_t;
 typedef long		__kernel_ssize_t;
+typedef long		__kernel_ptrdiff_t;
 #else
 typedef unsigned int	__kernel_size_t;
 typedef int		__kernel_ssize_t;
-#endif
 typedef int		__kernel_ptrdiff_t;
+#endif
 typedef long		__kernel_time_t;
 typedef long		__kernel_suseconds_t;
 typedef long		__kernel_clock_t;