From: Greg Ungerer <gerg@snapgear.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: <linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <arm@kernel.org>,
Greg Ungerer <gerg@uclinux.org>,
Russell King <rmk+kernel@arm.linux.org.uk>
Subject: Re: [PATCH 01/16] ARM: warnings in arch/arm/include/asm/uaccess.h
Date: Mon, 8 Oct 2012 15:49:26 +1000 [thread overview]
Message-ID: <50726966.5010503@snapgear.com> (raw)
In-Reply-To: <1349448930-23976-2-git-send-email-arnd@arndb.de>
On 06/10/12 00:55, Arnd Bergmann wrote:
> On NOMMU ARM, the __addr_ok() and __range_ok() macros do not evaluate
> their arguments, which may lead to harmless build warnings in some
> code where the variables are not used otherwise. Adding a cast to void
> gets rid of the warning and does not make any semantic changes.
>
> Without this patch, building at91x40_defconfig results in:
>
> fs/read_write.c: In function 'rw_copy_check_uvector':
> fs/read_write.c:684:9: warning: unused variable 'buf' [-Wunused-variable]
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> Cc: Greg Ungerer <gerg@uclinux.org>
> Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Greg Ungerer <gerg@uclinux.org>
I can pick it up and push to the arm-soc tree.
Regards
Greg
> ---
> arch/arm/include/asm/uaccess.h | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h
> index 77bd79f..7e1f760 100644
> --- a/arch/arm/include/asm/uaccess.h
> +++ b/arch/arm/include/asm/uaccess.h
> @@ -200,8 +200,8 @@ extern int __put_user_8(void *, unsigned long long);
> #define USER_DS KERNEL_DS
>
> #define segment_eq(a,b) (1)
> -#define __addr_ok(addr) (1)
> -#define __range_ok(addr,size) (0)
> +#define __addr_ok(addr) ((void)(addr),1)
> +#define __range_ok(addr,size) ((void)(addr),0)
> #define get_fs() (KERNEL_DS)
>
> static inline void set_fs(mm_segment_t fs)
>
--
------------------------------------------------------------------------
Greg Ungerer -- Principal Engineer EMAIL: gerg@snapgear.com
SnapGear Group, McAfee PHONE: +61 7 3435 2888
8 Gardner Close FAX: +61 7 3217 5323
Milton, QLD, 4064, Australia WEB: http://www.SnapGear.com
next prev parent reply other threads:[~2012-10-08 5:44 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1349448930-23976-1-git-send-email-arnd@arndb.de>
2012-10-05 14:55 ` [PATCH 01/16] ARM: warnings in arch/arm/include/asm/uaccess.h Arnd Bergmann
2012-10-08 5:49 ` Greg Ungerer [this message]
2012-10-09 12:08 ` Arnd Bergmann
2012-10-05 14:55 ` [PATCH 02/16] ARM: binfmt_flat: unused variable 'persistent' Arnd Bergmann
2012-10-08 5:50 ` Greg Ungerer
2012-10-05 14:55 ` [PATCH 03/16] SCSI: ARM: ncr5380/oak uses no interrupts Arnd Bergmann
2012-10-05 14:55 ` [PATCH 04/16] SCSI: ARM: make fas216_dumpinfo function conditional Arnd Bergmann
2012-10-05 14:55 ` [PATCH 05/16] vfs: bogus warnings in fs/namei.c Arnd Bergmann
2012-10-08 11:51 ` Jan Kara
2012-10-09 12:27 ` Arnd Bergmann
2012-10-09 13:07 ` Arnd Bergmann
2012-10-09 13:43 ` Jan Kara
2012-10-11 4:37 ` Al Viro
2012-10-11 13:20 ` [PATCH v2] " Arnd Bergmann
2012-10-05 14:55 ` [PATCH 06/16] mm/slob: use min_t() to compare ARCH_SLAB_MINALIGN Arnd Bergmann
2012-10-05 16:46 ` Christoph Lameter
2012-10-31 7:25 ` Pekka Enberg
2012-10-05 14:55 ` [PATCH 07/16] cgroup: fix warning when building without any subsys Arnd Bergmann
2012-10-05 15:50 ` Ben Blum
2012-10-06 2:14 ` Tejun Heo
2012-10-06 6:19 ` Arnd Bergmann
2012-10-05 14:55 ` [PATCH 08/16] ipvs: fix ip_vs_set_timeout debug messages Arnd Bergmann
2012-10-05 20:39 ` Julian Anastasov
2012-10-06 6:45 ` Arnd Bergmann
2012-10-06 8:09 ` Julian Anastasov
2012-10-06 9:54 ` Arnd Bergmann
2012-10-09 1:48 ` Simon Horman
2012-10-05 14:55 ` [PATCH 09/16] USB: EHCI: mark ehci_orion_conf_mbus_windows __devinit Arnd Bergmann
2012-10-05 18:05 ` Alan Stern
2012-10-05 14:55 ` [PATCH 10/16] clk: don't mark clkdev_add_table as init Arnd Bergmann
2012-10-05 14:55 ` [PATCH 11/16] pcmcia: sharpsl: don't discard sharpsl_pcmcia_ops Arnd Bergmann
2012-10-05 14:55 ` [PATCH 12/16] video: mark nuc900fb_map_video_memory as __devinit Arnd Bergmann
2012-10-05 14:55 ` [PATCH 13/16] ARM: be really quiet when building with 'make -s' Arnd Bergmann
2012-10-05 16:36 ` Nicolas Pitre
2012-10-05 14:55 ` [PATCH 14/16] ARM: pxa: armcore: fix PCI PIO warnings Arnd Bergmann
2012-10-05 15:32 ` Igor Grinberg
2012-10-05 14:55 ` [PATCH 15/16] spi/s3c64xx: use correct dma_transfer_direction type Arnd Bergmann
2012-10-05 14:55 ` [PATCH 16/16] ARM: pass -marm to gcc by default for both C and assembler Arnd Bergmann
2012-10-05 18:42 ` Nicolas Pitre
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