From: Christophe Leroy <christophe.leroy@c-s.fr>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
scottwood@freescale.com
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: [PATCH] powerpc32: fix warning from include/asm-generic/termios-base.h
Date: Fri, 5 Dec 2014 12:20:25 +0100 (CET) [thread overview]
Message-ID: <20141205112025.330971A5D4F@localhost.localdomain> (raw)
When size is equal to 1, the test is always true so lets eliminate both 0 and 1
at first.
include/asm-generic/termios-base.h: In function 'user_termio_to_kernel_termios':
include/asm-generic/termios-base.h:35:2: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
if (get_user(termios->c_line, &termio->c_line) < 0)
^
include/asm-generic/termios-base.h: In function 'kernel_termios_to_user_termio':
include/asm-generic/termios-base.h:57:6: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
put_user(termios->c_line, &termio->c_line) < 0 ||
^
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
arch/powerpc/include/asm/uaccess.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h
index 9485b43..f3028d2 100644
--- a/arch/powerpc/include/asm/uaccess.h
+++ b/arch/powerpc/include/asm/uaccess.h
@@ -54,7 +54,7 @@
#define __access_ok(addr, size, segment) \
(((addr) <= (segment).seg) && \
- (((size) == 0) || (((size) - 1) <= ((segment).seg - (addr)))))
+ (((size) <= 1) || (((size) - 1) <= ((segment).seg - (addr)))))
#endif
--
2.1.0
next reply other threads:[~2014-12-05 11:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-05 11:20 Christophe Leroy [this message]
2015-03-21 0:01 ` powerpc32: fix warning from include/asm-generic/termios-base.h Scott Wood
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