e1000e: stop cleaning when we reach tx_ring->next_to_use
authorTerry Loftin <terry.loftin@hp.com>
Fri, 9 Apr 2010 10:29:49 +0000 (10:29 +0000)
committerDavid S. Miller <davem@davemloft.net>
Tue, 13 Apr 2010 10:03:13 +0000 (03:03 -0700)
commitdac876193cd79ced36d0462749ea47c05844fb49
tree8b16c5fe80b76ba2fcce7ada953d14269a609980
parentd5aa22520dbb49e726420ca56b3dcfe56724d33e
e1000e: stop cleaning when we reach tx_ring->next_to_use

Tx ring buffers after tx_ring->next_to_use are volatile and could
change, possibly causing a crash.  Stop cleaning when we hit
tx_ring->next_to_use.

Signed-off-by: Terry Loftin <terry.loftin@hp.com>
Acked-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/e1000e/netdev.c