On Tue, 2016-02-08 at 02:39:43 UTC, Benjamin Herrenschmidt wrote: > This sets the type of the interrupt appropriately. We set it as follow: > > - If not mapped from the device-tree, we use edge. This is the case > of the virtual interrupts and PCI MSIs for example. > > - If mapped from the device-tree and #interrupt-cells is 2 (PAPR > compliant), we use the second cell to set the appropriate type > > - If mapped from the device-tree and #interrupt-cells is 1 (current > OPAL on P8 does that), we assume level sensitive since those are > typically going to be the PSI LSIs which are level sensitive. > > Additionally, we mark the interrupts requested via the opal_interrupts > property all level. This is a bit fishy but the best we can do until we > fix OPAL to properly expose them with a complete descriptor. It is also > correct for the current HW anyway as OPAL interrupts are currently PCI > error and PSI interrupts which are level. > > Finally now that edge interrupts are properly identified, we can enable > CONFIG_HARDIRQS_SW_RESEND which will make the core re-send them if > they occur while masked, which some drivers rely upon. > > This fixes issues with lost interrupts on some Mellanox adapters. > > Signed-off-by: Benjamin Herrenschmidt <b...@kernel.crashing.org>
Applied to powerpc fixes, thanks. https://git.kernel.org/powerpc/c/880a3d6afd068682d6386a0528 cheers
