lib/gcd.c: prevent possible div by 0
authorDavidlohr Bueso <dave@gnu.org>
Fri, 5 Oct 2012 00:13:18 +0000 (17:13 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 12 Oct 2012 20:38:38 +0000 (05:38 +0900)
commit6d36a9dd1dcdd053ab32f303b94cc1bae5a47f22
tree5df55ecc66f90dfbfce2d1da916abdf476dec604
parent03c4441b88fd2614580eeda598623e2b21ec5822
lib/gcd.c: prevent possible div by 0

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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
lib/gcd.c