[PATCH v2] drivers: net: xgene: fix Tx flow control

[David Miller]

From: Iyappan Subramanian <isubramanian at apm.com>
Date: Wed, 16 Dec 2015 22:26:05 -0800

> Currently the Tx flow control is based on reading the hardware state,
> which is not accurate since it may not reflect the descriptors that
> are not yet reached the memory.
> 
> To accurately control the Tx flow, changing it to be software based.
> 
> Signed-off-by: Iyappan Subramanian <isubramanian at apm.com>
> ---
> 
> v2: Address v1 review comments
> 	- Removed use of atomic_t
> 	- Added tx_level and txc_level counters to pdata
> 
> v1: Initial version

Applied, thanks.