Messages in this thread | | | Date | Mon, 23 Sep 2013 14:42:50 +1000 | From | Stephen Rothwell <> | Subject | Re: linux-next: build warning after merge of the random tree |
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Hi Ted,
On Mon, 23 Sep 2013 14:39:24 +1000 Stephen Rothwell <sfr@canb.auug.org.au> wrote: > > After merging the random tree, today's linux-next build (powerpc64 > allnoconfig) produced this warning: > > In file included from include/linux/kernel.h:10:0, > from include/linux/sched.h:15, > from include/linux/utsname.h:5, > from drivers/char/random.c:238: > drivers/char/random.c: In function 'add_interrupt_randomness': > include/linux/bitops.h:96:2: warning: 'input[3]' may be used uninitialized in this function [-Wmaybe-uninitialized] > return (word << shift) | (word >> (32 - shift)); > ^ > drivers/char/random.c:827:10: note: 'input[3]' was declared here > __u32 input[4], cycles = random_get_entropy(); > ^ > In file included from include/linux/kernel.h:10:0, > from include/linux/sched.h:15, > from include/linux/utsname.h:5, > from drivers/char/random.c:238: > include/linux/bitops.h:96:2: warning: 'input[2]' may be used uninitialized in this function [-Wmaybe-uninitialized] > return (word << shift) | (word >> (32 - shift)); > ^ > drivers/char/random.c:827:10: note: 'input[2]' was declared here > __u32 input[4], cycles = random_get_entropy(); > ^ > > Probably introduced by commit d5693ae494f2 ("random: speed up the > fast_mix function by a factor of four").
i386 defconfig produces similar (to make testing easier).
-- Cheers, Stephen Rothwell sfr@canb.auug.org.au [unhandled content-type:application/pgp-signature] | |