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From: Arnd Bergmann <arnd@arndb.de>
To: linux-arm-kernel@lists.infradead.org
Cc: arm@kernel.org, linux-kernel@vger.kernel.org,
	Arnd Bergmann <arnd@arndb.de>, Kukjin Kim <kgene.kim@samsung.com>,
	Ben Dooks <ben-linux@fluff.org>
Subject: [PATCH 08/10] ARM: s3c24xx: enable CONFIG_BUG for tct_hammer
Date: Wed,  8 Aug 2012 23:27:56 +0200	[thread overview]
Message-ID: <1344461278-28245-9-git-send-email-arnd@arndb.de> (raw)
In-Reply-To: <1344461278-28245-1-git-send-email-arnd@arndb.de>

Disabling CONFIG_BUG creates an insane amount of build warnings, which
makes it useless to check for building defconfigs to see if new
warnings show up.

Without this patch, building tct_hammer_defconfig results in:

net/packet/af_packet.c: In function 'tpacket_rcv':
net/packet/af_packet.c:1889:30: warning: 'hdrlen' may be used uninitialized in this function [-Wuninitialized]
net/core/ethtool.c: In function 'ethtool_get_feature_mask':
net/core/ethtool.c:213:1: warning: control reaches end of non-void function [-Wreturn-type]
block/cfq-iosched.c: In function 'cfq_async_queue_prio':
block/cfq-iosched.c:2914:1: warning: control reaches end of non-void function [-Wreturn-type]
mm/bootmem.c: In function 'mark_bootmem':
mm/bootmem.c:352:1: warning: control reaches end of non-void function [-Wreturn-type]
net/core/dev.c: In function 'skb_warn_bad_offload':
net/core/dev.c:1904:33: warning: unused variable 'null_features' [-Wunused-variable]
drivers/mtd/chips/cfi_probe.c: In function 'cfi_chip_setup':
include/linux/mtd/cfi.h:489:3: warning: 'r.x[0]' may be used uninitialized in this function [-Wuninitialized]
include/linux/mtd/map.h:394:11: note: 'r.x[0]' was declared here
include/linux/mtd/cfi.h:489:3: warning: 'r.x[0]' may be used uninitialized in this function [-Wuninitialized]
(and many more)

The size of vmlinux increases by 1.78% because of this:

size obj-arm/vmlinux.nobug
   text    data     bss     dec     hex filename
   2108474  116916   55352 2280742  22cd26 obj-arm/vmlinux
size obj-arm/vmlinux.bug
   text    data     bss     dec     hex filename
   2150804  116916   53696 2321416  236c08 obj-arm/vmlinux

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Ben Dooks <ben-linux@fluff.org>
---
 arch/arm/configs/tct_hammer_defconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/configs/tct_hammer_defconfig b/arch/arm/configs/tct_hammer_defconfig
index 1d24f84..71277a1 100644
--- a/arch/arm/configs/tct_hammer_defconfig
+++ b/arch/arm/configs/tct_hammer_defconfig
@@ -7,7 +7,7 @@ CONFIG_SYSFS_DEPRECATED_V2=y
 CONFIG_BLK_DEV_INITRD=y
 CONFIG_EXPERT=y
 # CONFIG_KALLSYMS is not set
-# CONFIG_BUG is not set
+# CONFIG_BUGVERBOSE is not set
 # CONFIG_ELF_CORE is not set
 # CONFIG_SHMEM is not set
 CONFIG_SLOB=y
-- 
1.7.10


  parent reply	other threads:[~2012-08-08 21:28 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-08-08 21:27 [PATCH 00/10] ARM: interesting warnings from defconfig builds Arnd Bergmann
2012-08-08 21:27 ` [PATCH 01/10] ARM: footbridge: nw_gpio_lock is raw_spin_lock Arnd Bergmann
2012-08-08 21:27 ` [PATCH 02/10] ARM: ks8695: __arch_virt_to_dma type handling Arnd Bergmann
2012-08-08 21:27 ` [PATCH 03/10] ARM: mv78xx0: fix win_cfg_base prototype Arnd Bergmann
2012-08-13 14:59   ` Andrew Lunn
2012-08-08 21:27 ` [PATCH 04/10] ARM: pass -marm to gcc by default Arnd Bergmann
2012-08-09 21:12   ` Nicolas Pitre
2012-08-09 21:17     ` Russell King - ARM Linux
2012-08-09 21:22       ` Nicolas Pitre
2012-08-10  9:59         ` Dave Martin
2012-08-10 11:12           ` Arnd Bergmann
2012-08-08 21:27 ` [PATCH 05/10] asm-generic: xor: mark static functions as __maybe_unused Arnd Bergmann
2012-08-08 21:27 ` [PATCH 06/10] ARM: davinci: don't use broken ntosd2_init_i2c Arnd Bergmann
2012-08-09  8:00   ` [PATCH v2 " Arnd Bergmann
2012-08-09 18:23     ` Sekhar Nori
2012-08-08 21:27 ` [PATCH 07/10] ARM: rpc: check device_register return code in ecard_probe Arnd Bergmann
2012-08-08 21:27 ` Arnd Bergmann [this message]
2012-08-10  6:07   ` [PATCH 08/10] ARM: s3c24xx: enable CONFIG_BUG for tct_hammer Kukjin Kim
2012-08-08 21:27 ` [PATCH 09/10] ARM: rpc: Fix building RiscPC Arnd Bergmann
2012-08-09  7:47   ` Russell King - ARM Linux
2012-08-10 11:03     ` Arnd Bergmann
2012-08-13 10:52       ` Russell King - ARM Linux
2012-08-08 21:27 ` [PATCH 10/10] leds: renesas: fix error handling Arnd Bergmann
2012-08-09  6:15   ` Bryan Wu
2012-08-09  7:34     ` Arnd Bergmann

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