From: Sergei Shtylyov <redacted>
Date: Fri, 30 May 2014 18:00:10 +0400

Hello.

On 05/30/2014 05:56 PM, Ben Dooks wrote:

   The subject should have "R8A779x".

quoted

The current behaviour of the sh_eth driver is not to use the RNC bit
for the receive ring. This means that every packet recieved is not
only
generating an IRQ but it also stops the receive ring DMA as well until
the driver re-enables it after unloading the packet.

This means that a number of the following errors are generated due to
the receive packet FIFO overflowing due to nowhere to put packets:

	net eth0: Receive FIFO Overflow

Setting the RMCR_RNC configuration has so far been tested with an NFS
root filesystem and the driver has not failed yet. It is not yet known
why this is not set for R8A779x operation (Feedback on this issue or
other testing is welcome)

   I have provided such feedback (and many people provided testing), so
   that the last sentence doesn't make sense anymore.

quoted

There are further test reports from Sergei Shtylov and others for
both the R8A7790 and R8A7791.

quoted

Tested-by: Sergei Shtylyov <redacted>
Signed-off-by: Ben Dooks <redacted>

   Other than the remarks above:

Acked-by: Sergei Shtylyov <redacted>

Ben, please fix the commit message and resubmit,