From: "Myklebust, Trond" <Trond.Myklebust@netapp.com>
To: Arnd Bergmann <arnd@arndb.de>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"J. Bruce Fields" <bfields@redhat.com>,
"linux-nfs@vger.kernel.org" <linux-nfs@vger.kernel.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>
Subject: RE: [PATCH 15/19] sunrpc: don't warn for unused variable 'buf'
Date: Fri, 25 Jan 2013 23:04:28 +0000 [thread overview]
Message-ID: <4FA345DA4F4AE44899BD2B03EEEC2FA91833C205@sacexcmbx05-prd.hq.netapp.com> (raw)
In-Reply-To: <1359153858-31992-16-git-send-email-arnd@arndb.de>
> -----Original Message-----
> From: Arnd Bergmann [mailto:arnd@arndb.de]
> Sent: Friday, January 25, 2013 5:44 PM
> To: linux-arm-kernel@lists.infradead.org
> Cc: linux-kernel@vger.kernel.org; Arnd Bergmann; J. Bruce Fields;
> Myklebust, Trond; linux-nfs@vger.kernel.org; netdev@vger.kernel.org
> Subject: [PATCH 15/19] sunrpc: don't warn for unused variable 'buf'
>
> When RPC_DEBUG is unset, the dprintk() macro does nothing, causing the
> 'buf' variable in svc_printk to become unused.
> Marking it as __maybe_unused avoids a harmless gcc warning.
>
> Without this patch, building at91_dt_defconfig results in:
>
> net/sunrpc/svc.c: In function 'svc_printk':
> net/sunrpc/svc.c:1051:7: warning: unused variable 'buf' [-Wunused-variable]
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> Cc: "J. Bruce Fields" <bfields@redhat.com>
> Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
> Cc: linux-nfs@vger.kernel.org
> Cc: netdev@vger.kernel.org
> ---
> net/sunrpc/svc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c index dbf12ac..b1f5223
> 100644
> --- a/net/sunrpc/svc.c
> +++ b/net/sunrpc/svc.c
> @@ -1047,7 +1047,7 @@ void svc_printk(struct svc_rqst *rqstp, const char
> *fmt, ...) {
> struct va_format vaf;
> va_list args;
> - char buf[RPC_MAX_ADDRBUFLEN];
> + char buf[RPC_MAX_ADDRBUFLEN] __maybe_unused;
>
> va_start(args, fmt);
Alternatively, just declare it using the RPC_IFDEBUG() macro.
Cheers
Trond
next prev parent reply other threads:[~2013-01-25 23:04 UTC|newest]
Thread overview: 99+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-25 14:14 [PATCH 00/19] ARM: common warning fixes Arnd Bergmann
2013-01-25 14:14 ` [PATCH 01/19] ARM: shmobile: fix defconfig warning on CONFIG_USB Arnd Bergmann
2013-01-25 14:14 ` [PATCH 02/19] ARM: disable virt_to_bus/virt_to_bus almost everywhere Arnd Bergmann
2013-01-25 14:14 ` [PATCH 03/19] ARM: msm: proc_comm_boot_wait should not be __init Arnd Bergmann
2013-01-25 18:16 ` David Brown
2013-02-12 1:42 ` Olof Johansson
2013-01-25 14:14 ` [PATCH 04/19] oss/dmabuf: use dma_map_single Arnd Bergmann
2013-01-25 14:14 ` [PATCH 05/19] sched: warnings in kernel/sched/fair.c Arnd Bergmann
2013-01-25 16:00 ` Paul Turner
2013-01-26 12:17 ` [tip:sched/urgent] sched: Fix warning " tip-bot for Arnd Bergmann
2013-01-25 14:14 ` [PATCH 06/19] sched/debug: fix format string for 32 bit platforms Arnd Bergmann
2013-01-25 16:01 ` Paul Turner
2013-01-26 12:19 ` [tip:sched/urgent] sched/debug: Fix format string for 32-bit platforms tip-bot for Arnd Bergmann
2013-01-25 14:14 ` [PATCH 07/19] scripts/sortextable: silence script output Arnd Bergmann
2013-01-25 23:06 ` David Daney
2013-01-25 14:14 ` [PATCH 08/19] lockdep: avoid warning about unused variables Arnd Bergmann
2013-01-25 14:14 ` [PATCH 09/19] mfd/twl4030: don't warn about uninitialized return code Arnd Bergmann
2013-01-25 14:25 ` Peter Ujfalusi
2013-01-25 14:34 ` Arnd Bergmann
2013-01-25 14:35 ` Amit Kucheria
2013-01-25 14:14 ` [PATCH 10/19] watchdog: at91sam9: at91_wdt_dt_ids cannot be __init Arnd Bergmann
2013-01-25 14:14 ` [PATCH 11/19] regmap: avoid undefined return from regmap_read_debugfs Arnd Bergmann
2013-01-26 4:42 ` Mark Brown
2013-01-26 4:52 ` Mark Brown
2013-01-26 9:17 ` Arnd Bergmann
2013-01-26 9:49 ` Mark Brown
2013-01-26 9:59 ` Russell King - ARM Linux
2013-01-26 10:03 ` Mark Brown
2013-01-26 10:07 ` Russell King - ARM Linux
2013-01-26 11:45 ` [PATCH 11/19] regmap: regmap: avoid spurious warning in regmap_read_debugfs Arnd Bergmann
2013-01-27 2:51 ` Mark Brown
2013-01-25 14:14 ` [PATCH 12/19] pinctrl: exynos: don't mark probing functions as __init Arnd Bergmann
2013-01-25 17:51 ` Kukjin Kim
2013-01-29 22:08 ` Linus Walleij
2013-01-25 14:14 ` [PATCH 13/19] pinctrl: nomadik: nmk_prcm_gpiocr_get_mode may be unused Arnd Bergmann
2013-01-29 22:11 ` Linus Walleij
2013-01-25 14:14 ` [PATCH 14/19] spi/atmel: remove incorrect __exit_p() Arnd Bergmann
2013-02-05 13:34 ` Grant Likely
2013-01-25 14:14 ` [PATCH 15/19] sunrpc: don't warn for unused variable 'buf' Arnd Bergmann
2013-01-25 14:14 ` [PATCH 16/19] mac80211: avoid a build warning Arnd Bergmann
2013-01-25 14:17 ` Johannes Berg
2013-01-25 14:14 ` [PATCH 17/19] input/joystick: use get_cycles on ARM Arnd Bergmann
2013-01-25 14:14 ` [PATCH 18/19] ARM: at91: suspend both memory controllers on at91sam9263 Arnd Bergmann
2013-01-25 15:42 ` Jean-Christophe PLAGNIOL-VILLARD
2013-01-25 15:57 ` Arnd Bergmann
2013-01-25 14:14 ` [PATCH 19/19] [INCOMPLETE] ARM: make return_address available for ARM_UNWIND Arnd Bergmann
2013-01-25 16:26 ` Dave Martin
2013-01-25 16:44 ` Steven Rostedt
2013-01-25 16:59 ` Dave Martin
2013-01-25 17:08 ` Steven Rostedt
2013-01-25 17:22 ` Dave Martin
2013-01-26 0:45 ` Arnd Bergmann
2013-01-28 2:33 ` Keun-O Park
2013-01-28 12:50 ` Dave Martin
2013-01-29 2:13 ` Keun-O Park
2014-01-07 14:33 ` Arnd Bergmann
2014-01-07 14:41 ` Russell King - ARM Linux
2014-01-07 15:48 ` Arnd Bergmann
2014-01-07 16:36 ` Dave Martin
2014-01-07 18:31 ` Steven Rostedt
2013-01-25 22:43 ` [PATCHv2 00/19] ARM: common warning fixes Arnd Bergmann
2013-01-25 22:44 ` [PATCH 01/19] ARM: shmobile: fix defconfig warning on CONFIG_USB Arnd Bergmann
2013-01-28 0:21 ` Simon Horman
2013-01-25 22:44 ` [PATCH 02/19] ARM: disable virt_to_bus/virt_to_bus almost everywhere Arnd Bergmann
2013-01-25 22:44 ` [PATCH 03/19] ARM: msm: proc_comm_boot_wait should not be __init Arnd Bergmann
2013-01-25 22:44 ` [PATCH 04/19] oss/dmabuf: use dma_map_single Arnd Bergmann
2013-01-25 22:44 ` [PATCH 05/19] sched: warnings in kernel/sched/fair.c Arnd Bergmann
2013-01-25 22:44 ` [PATCH 06/19] sched/debug: fix format string for 32 bit platforms Arnd Bergmann
2013-01-25 22:44 ` [PATCH 07/19] scripts/sortextable: silence script output Arnd Bergmann
2013-01-25 22:44 ` [PATCH 08/19] lockdep: avoid warning about unused variables Arnd Bergmann
2013-01-25 22:44 ` [PATCH 09/19] mfd/twl4030: don't warn about uninitialized return code Arnd Bergmann
2013-01-27 0:42 ` Samuel Ortiz
2013-01-25 22:44 ` [PATCH 10/19] watchdog: at91sam9: at91_wdt_dt_ids cannot be __init Arnd Bergmann
2013-01-28 8:32 ` Nicolas Ferre
2013-01-28 10:19 ` Fabio Porcedda
2013-01-28 9:49 ` Fabio Porcedda
2013-01-30 19:31 ` Wim Van Sebroeck
2013-01-25 22:44 ` [PATCH 11/19] regmap: avoid undefined return from regmap_read_debugfs Arnd Bergmann
2013-01-25 22:44 ` [PATCH 12/19] pinctrl: exynos: don't mark probing functions as __init Arnd Bergmann
2013-01-25 22:44 ` [PATCH 13/19] pinctrl: nomadik: nmk_prcm_gpiocr_get_mode may be unused Arnd Bergmann
2013-01-25 22:44 ` [PATCH 14/19] spi/atmel: remove incorrect __exit_p() Arnd Bergmann
2013-01-28 8:33 ` Nicolas Ferre
2013-01-25 22:44 ` [PATCH 15/19] sunrpc: don't warn for unused variable 'buf' Arnd Bergmann
2013-01-25 23:04 ` Myklebust, Trond [this message]
2013-01-25 23:45 ` Arnd Bergmann
2013-01-26 11:03 ` Russell King - ARM Linux
2013-01-26 13:34 ` Arnd Bergmann
2013-01-28 23:18 ` J. Bruce Fields
2013-01-25 22:44 ` [PATCH 16/19] ARM: sa1100: don't warn about mach/ide.h Arnd Bergmann
2013-01-25 22:44 ` [PATCH 17/19] input/joystick: use get_cycles on ARM Arnd Bergmann
2013-01-25 22:44 ` [PATCH 18/19] ARM: at91: suspend both memory controllers on at91sam9263 Arnd Bergmann
2013-04-18 13:45 ` Nicolas Ferre
2013-04-18 14:15 ` Arnd Bergmann
2013-04-18 14:19 ` Nicolas Ferre
2013-04-18 14:20 ` Arnd Bergmann
2013-04-18 14:32 ` Daniel Lezcano
2013-01-25 22:44 ` [PATCH 19/19] [INCOMPLETE] ARM: make return_address available for ARM_UNWIND Arnd Bergmann
2013-01-26 10:05 ` [PATCHv2 00/19] ARM: common warning fixes Russell King - ARM Linux
2013-01-26 13:31 ` Arnd Bergmann
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