From: "David Rivshin (Allworx)" <redacted>
Date: Fri, 12 Feb 2016 19:45:36 -0500

From: David Rivshin <redacted>

The cpsw-phy-sel driver supports only MII, RMII, and RGMII PHY modes,
and silently handled any other values as if MII was specified. In a
case where the PHY mode was incorrectly specified, or a bug elsewhere,
there would be no indication of a problem. If MII was the correct mode,
then this will go unnoticed, otherwise the symptom will be a failure
to transmit/receive data over the RMII/RGMII link.

Add a dev_warn() to make this condition obvious and provide a
breadcrumb to follow.

Cc: Mugunthan V N <redacted>
Signed-off-by: David Rivshin <redacted>

Applied to 'net', thanks.  I don't think I'll queue this up for -stable.

Thanks.