From: Lino Sanfilippo <linosanfili...@gmx.de> Date: Sat, 3 Dec 2016 00:06:04 +0100
> after stumbling over a potential deadlock situation in the altera driver > (see http://marc.info/?l=linux-netdev&m=148054615230447&w=2), I checked > all other ethernet drivers for the same issue and actually found it in 2 > more, namely stmmac, and sxgbe. Please see the commit messages for a > description of the problem. > These 2 patches fix the concerning drivers. First of all, I don't want to apply these patches without proper testing and ACKs from the individual driver maintainers. For both of these drivers, this situation only exists because the TX path uses the unnecessary ->tx_lock. This private lock should be removed completely and the driver should use the lock the mid-layer already holds in the transmit path and take it in the TX reclaim path instead of the private ->tx_lock.
