On Tue, Jan 28, 2014 at 05:52:42PM +0530, Aneesh Kumar K.V wrote: > From: Li Zhong <zhong@xxxxxxxxxxxxxxxxxx> > > It seems that forward declaration couldn't work well with typedef, use > struct spinlock directly to avoiding following build errors: > > In file included from include/linux/spinlock.h:81, > from include/linux/seqlock.h:35, > from include/linux/time.h:5, > from include/uapi/linux/timex.h:56, > from include/linux/timex.h:56, > from include/linux/sched.h:17, > from arch/powerpc/kernel/asm-offsets.c:17: > include/linux/spinlock_types.h:76: error: redefinition of typedef 'spinlock_t' > /root/linux-next/arch/powerpc/include/asm/pgtable-ppc64.h:563: note: previous declaration of 'spinlock_t' was here > > build fix for upstream SHA1: b3084f4db3aeb991c507ca774337c7e7893ed04f > for 3.13 stable series I don't understand, why is this needed? Is there a corrisponding patch upstream that already does this? What went wrong with a "normal" backport of the patch to 3.13? confused, greg k-h -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html