amd-xgbe: Add a read memory barrier to Tx/Rx path

Browse source

Add a read memory barrier to the Tx and Rx paths where the ownership
bit is checked to be sure that all descriptor fields are read after
having read the ownership bit for the descriptor.

This has not been an issue to date, but it's a good safe-guard to have.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

This commit is contained in:

Lendacky, Thomas 2014-11-20 11:03:26 -06:00 • committed by David S. Miller

parent 91ecee6846

commit 5449e27167

2 changed files with 7 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

3

drivers/net/ethernet/amd/xgbe/xgbe-dev.c

View file

4

drivers/net/ethernet/amd/xgbe/xgbe-drv.c

View file