Commit 67a95e20 authored by Committed by David S. MillerBrowse files
bnxt_en: Need memory barrier when processing the completion ring.
The code determines if the next ring entry is valid before proceeding further to read the rest of the entry. The CPU can re-order and read the rest of the entry first, possibly reading a stale entry, if DMA of a new entry happens right after reading it. This issue can be readily seen on a ppc64 system, causing it to crash. Signed-off-by: Michael Chan <firstname.lastname@example.org> Signed-off-by: David S. Miller <email@example.com>