include/asm/apic.h:47: warning: value computed is not used
Hi, I'm not sure if this belongs here or on the opensuse mailing list: I'm re-compiling the kernel for OpenSuSE 10.1 alpha4 on both i386 and x86_64 hosts. Works fine on the i386 host, but on the x86_64 host (recompiling the default SuSE kernel for x86_64 with just some filesystems compiled in) I get this error message for almost every file that is compiled: CC arch/x86_64/kernel/time.o In file included from include/asm/smp.h:22, from include/linux/irq.h:13, from include/asm/hardirq.h:6, from include/linux/hardirq.h:7, from include/linux/interrupt.h:11, from arch/x86_64/kernel/time.c:18: include/asm/apic.h: In function â: include/asm/apic.h:47: warning: value computed is not used CC kernel/printk.o In file included from include/asm/smp.h:22, from include/linux/irq.h:13, from include/asm/hardirq.h:6, from include/linux/hardirq.h:7, from include/linux/interrupt.h:11, from include/linux/rcuref.h:36, from include/linux/fs.h:12, from include/linux/mm.h:15, from kernel/printk.c:20: include/asm/apic.h: In function â: include/asm/apic.h:47: warning: value computed is not used ... and so on. Is this something to worry about? An indication that I've configured sth. wrong? Even if it's not serious, can I get rid of this some way to make the log readable again? Thanks! cu, Frank -- Dipl.-Inform. Frank Steiner Web: http://www.bio.ifi.lmu.de/~steiner/ Lehrstuhl f. Bioinformatik Mail: http://www.bio.ifi.lmu.de/~steiner/m/ LMU, Amalienstr. 17 Phone: +49 89 2180-4049 80333 Muenchen, Germany Fax: +49 89 2180-99-4049 * Rekursion kann man erst verstehen, wenn man Rekursion verstanden hat. *
On Tuesday 10 January 2006 16:35, Frank Steiner wrote:
CC arch/x86_64/kernel/time.o In file included from include/asm/smp.h:22, from include/linux/irq.h:13, from include/asm/hardirq.h:6, from include/linux/hardirq.h:7, from include/linux/interrupt.h:11, from arch/x86_64/kernel/time.c:18: include/asm/apic.h: In function â: include/asm/apic.h:47: warning: value computed is not used
gcc 4.1 -Wall got pickier again (the gcc developers like to change it randomly) and by chance it hit an often used include file. Should be harmless. -Andi
* Andi Kleen
On Tuesday 10 January 2006 16:35, Frank Steiner wrote:
CC arch/x86_64/kernel/time.o In file included from include/asm/smp.h:22, from include/linux/irq.h:13, from include/asm/hardirq.h:6, from include/linux/hardirq.h:7, from include/linux/interrupt.h:11, from arch/x86_64/kernel/time.c:18: include/asm/apic.h: In function â: include/asm/apic.h:47: warning: value computed is not used
gcc 4.1 -Wall got pickier again (the gcc developers like to change it randomly) and by chance it hit an often used include file. Should be harmless.
is harmless, but nasty. AFAIR --- include/asm/apic.h.ORG 2006-01-03 04:21:10.000000000 +0100 +++ include/asm/apic.h 2006-01-10 18:47:37.000000000 +0100 @@ -44,7 +44,7 @@ static __inline void apic_write_atomic(unsigned long reg, unsigned int v) { - xchg((volatile unsigned int *)(APIC_BASE+reg), v); + (void) xchg((volatile unsigned int *)(APIC_BASE+reg), v); } static __inline unsigned int apic_read(unsigned long reg) should fix it. (It's already fixed in newer kernels)
-Andi
-- Check the List-Unsubscribe header to unsubscribe For additional commands, email: suse-amd64-help@suse.com
Stefan -- SUSE LINUX Products GmbH, Maxfeldstr. 5 Mail: sf@suse.de D-90409 Nuernberg Phone: +49-911-740 53 - 0 GPG 1024D/91614BBC B226 E3DA 37B0 2170 7403 D19C 18AF E579 9161 4BBC
Ok! Thanks to both of you :-) -- Dipl.-Inform. Frank Steiner Web: http://www.bio.ifi.lmu.de/~steiner/ Lehrstuhl f. Bioinformatik Mail: http://www.bio.ifi.lmu.de/~steiner/m/ LMU, Amalienstr. 17 Phone: +49 89 2180-4049 80333 Muenchen, Germany Fax: +49 89 2180-99-4049 * Rekursion kann man erst verstehen, wenn man Rekursion verstanden hat. *
participants (3)
-
Andi Kleen -
Frank Steiner -
Stefan Fent