On 09/03/2013 04:04 AM, Russell King wrote: > On Tue, Sep 03, 2013 at 06:18:24PM +1000, Stephen Rothwell wrote: >> Hi all, >> >> After merging the final tree, today's linux-next build (arm defconfig) >> failed like this: >> >> arch/arm/kernel/built-in.o: In function `setup_arch': >> io.c:(.init.text+0x594): undefined reference to `erratum_a15_798181_init' >> >> Presumably caused by commit 34905a33184a ("ARM: 7804/2: Add check for >> Cortex-A15 errata 798181 ECO"). This build does not have CONFIG_SMP set. >> >> I have reverted that commit for today. > > Yep, and I think I'm going to do the same, rather than try and fix it. > Ah crap, I guess I should have left the ifdefs instead of trying to use IS_ENABLED. Here's a fix if you want it. Otherwise I can fold this in and resubmit it rebased on top of Will's barriers series. Rob 8<-------------------------------------------- From: Rob Herring <rob.herring@xxxxxxxxxxx> Date: Tue, 3 Sep 2013 07:35:41 -0500 Subject: [PATCH] ARM: fix undefined reference to erratum_a15_798181_init on !SMP Fix build error on !SMP builds introduced by commit 34905a33184a ("ARM: 804/2: Add check for Cortex-A15 errata 798181 ECO"): arch/arm/kernel/built-in.o: In function `setup_arch': io.c:(.init.text+0x594): undefined reference to `erratum_a15_798181_init' Reported-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> Signed-off-by: Rob Herring <rob.herring@xxxxxxxxxxx> --- arch/arm/include/asm/tlbflush.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm/include/asm/tlbflush.h b/arch/arm/include/asm/tlbflush.h index decff8d..e6217a1 100644 --- a/arch/arm/include/asm/tlbflush.h +++ b/arch/arm/include/asm/tlbflush.h @@ -443,7 +443,11 @@ static inline void local_flush_bp_all(void) isb(); } +#ifdef CONFIG_ARM_ERRATA_798181 extern void erratum_a15_798181_init(void); +#else +static inline void erratum_a15_798181_init(void) {} +#endif extern bool (*erratum_a15_798181_handler)(void); static inline bool erratum_a15_798181(void) -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html