]> git.baikalelectronics.ru Git - kernel.git/commit
ptr_ring: support zero length ring
authorJason Wang <jasowang@redhat.com>
Thu, 30 Jun 2016 06:45:31 +0000 (14:45 +0800)
committerDavid S. Miller <davem@davemloft.net>
Fri, 1 Jul 2016 09:32:16 +0000 (05:32 -0400)
commit16f664a846f796d517a30f9a53bc3616312020f3
tree453a3c8afc504c726462412c5b61cb90785c1069
parent8615c559a00d03263dfda02b3a62080857990445
ptr_ring: support zero length ring

Sometimes, we need zero length ring. But current code will crash since
we don't do any check before accessing the ring. This patch fixes this.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/linux/ptr_ring.h