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Message-Id: <1435424245-5160-1-git-send-email-dpb@corrigendum.ru> Date: Sat, 27 Jun 2015 19:57:25 +0300 From: Роман Донченко <dpb@...rigendum.ru> To: tglx@...utronix.de, mingo@...hat.com, hpa@...or.com Cc: x86@...nel.org, linux-kernel@...r.kernel.org, trivial@...nel.org Subject: [PATCH] x86: fix -Wsign-compare warnings in uaccess.h The casts are safe, since those conditions are only evaluated when sz >= 0. Signed-off-by: Роман Донченко <dpb@...rigendum.ru> --- arch/x86/include/asm/uaccess.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h index a8df874..4c47002 100644 --- a/arch/x86/include/asm/uaccess.h +++ b/arch/x86/include/asm/uaccess.h @@ -714,7 +714,7 @@ copy_from_user(void *to, const void __user *from, unsigned long n) * case, and do only runtime checking for non-constant sizes. */ - if (likely(sz < 0 || sz >= n)) + if (likely(sz < 0 || (unsigned)sz >= n)) n = _copy_from_user(to, from, n); else if(__builtin_constant_p(n)) copy_from_user_overflow(); @@ -732,7 +732,7 @@ copy_to_user(void __user *to, const void *from, unsigned long n) might_fault(); /* See the comment in copy_from_user() above. */ - if (likely(sz < 0 || sz >= n)) + if (likely(sz < 0 || (unsigned)sz >= n)) n = _copy_to_user(to, from, n); else if(__builtin_constant_p(n)) copy_to_user_overflow(); -- 2.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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