From: Andrew Lunn <[email protected]> Sent: Tuesday, July 07, 2015 2:35 AM > To: David Miller > Cc: Duan Fugang-B38611; Cory Tusar; netdev; Andrew Lunn > Subject: [PATCH v5] net: fec: Ensure clocks are enabled while using mdio > bus > > When a switch is attached to the mdio bus, the mdio bus can be used while > the interface is not open. If the IPG clock is not enabled, MDIO > reads/writes will simply time out. > > Add support for runtime PM to control this clock. Enable/disable this > clock using runtime PM, with open()/close() and mdio read()/write() > function triggering runtime PM operations. Since PM is optional, the IPG > clock is enabled at probe and is no longer modified by > fec_enet_clk_enable(), thus if PM is not enabled in the kernel, it is > guaranteed the clock is running when MDIO operations are performed. > > Signed-off-by: Andrew Lunn <[email protected]> > --- > v5: > Rewrite to use runtime PM with fec_runtime_suspend and fec_runtime_resume >
The version is fine for me. Acked-by: Fugang Duan <[email protected]> -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
