]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
drivers: ixgbevf: fix unsigned underflow
authorKulikov Vasiliy <segooon@gmail.com>
Thu, 15 Jul 2010 08:45:57 +0000 (08:45 +0000)
committerDavid S. Miller <davem@davemloft.net>
Fri, 16 Jul 2010 03:27:58 +0000 (20:27 -0700)
commit2540ddb5124f883bba3d4af5d8920d44dd66e794
tree4063da161125c5475bcc15c88b1401c967a04e05
parent9f27fb8514d0491f1c12052d78d46946f129b8e1
drivers: ixgbevf: fix unsigned underflow

'count' is unsigned. It is initialized to zero, then it can be increased
multiple times, and finally it is used in such a way:

   >>>> count--;
   |
   |    /* clear timestamp and dma mappings for remaining portion of packet */
   |    while (count >= 0) {
   |            count--;
   |            ...
   ^
If count is zero here (so, it was never increased), we would have a very
long loop :)

Signed-off-by: Kulikov Vasiliy <segooon@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ixgbevf/ixgbevf_main.c