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(parent: 91ecee6) | patch
amd-xgbe: Add a read memory barrier to Tx/Rx path
authorLendacky, Thomas <Thomas.Lendacky@amd.com>
Thu, 20 Nov 2014 17:03:26 +0000 (11:03 -0600)
committerDavid S. Miller <davem@davemloft.net>
Fri, 21 Nov 2014 20:19:10 +0000 (15:19 -0500)
commit5449e27167c9945d24108690aff86943d79774a7
tree480ae3e95e6190898d0e969678ca349508feaf03tree | snapshot (tar.gz zip)
parent91ecee6846704cbd0ec14509b86e99c291cd9bcdcommit | diff
amd-xgbe: Add a read memory barrier to Tx/Rx path

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>
drivers/net/ethernet/amd/xgbe/xgbe-dev.c diff | blob | blame | history
drivers/net/ethernet/amd/xgbe/xgbe-drv.c diff | blob | blame | history