From: Andrew Lunn <and...@lunn.ch> Date: Thu, 9 Feb 2017 00:03:41 +0100
> The Marvell switches have an in built watchdog over some of the > internal state machine. The watchdog can be configured to raise an > interrupt on error. The problem the watchdog found is then logged to > the kernel log. > > The older switches can automagically perform a software reset when the > watchdog triggers. This just resets the internal state machine, but > leaves the switch configuration unchanged. > > The 6390 family of switches cannot both raise an interrupt and > automagically perform a software reset. So the interrupt handler has > to perform the switch reset, and then re-enable the watchdog > interrupts. > > This has been tested using hacked together debugfs code which allows > the "force" bit to be set, so cause a watchdog interrupt. > > v2: Remove g2_prefix Series applied, thanks Andrew.
