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* lib/gcd.c: prevent possible div by 0Davidlohr Bueso2012-10-171-0/+3
| | | | | | | | | | | | | | | | | commit e96875677fb2b7cb739c5d7769824dff7260d31d upstream. Account for all properties when a and/or b are 0: gcd(0, 0) = 0 gcd(a, 0) = a gcd(0, b) = b Fixes no known problems in current kernels. Signed-off-by: Davidlohr Bueso <dave@gnu.org> Cc: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
* lib: add lib/gcd.cFlorian Fainelli2009-06-181-0/+18
This patch adds lib/gcd.c which contains a greatest common divider implementation taken from sound/core/pcm_timer.c Several usages of this new library function will be sent to subsystem maintainers. [akpm@linux-foundation.org: use swap() (pointed out by Joe)] [akpm@linux-foundation.org: just add gcd.o to obj-y, remove Kconfig changes] Signed-off-by: Florian Fainelli <florian@openwrt.org> Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Takashi Iwai <tiwai@suse.de> Cc: Simon Horman <horms@verge.net.au> Cc: Julius Volz <juliusv@google.com> Cc: David S. Miller <davem@davemloft.net> Cc: Patrick McHardy <kaber@trash.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>