This is a small patch set to fix some shortcomings how Orion bridge irqs are handled. The patches are based on v3.13-rc8 and should go into v3.14. They can possibly also marked for -stable down to v3.10.
This patches are the result of a discussion about a stale watchdog irq, that can accidentially trigger the watchdog's irq handler and cause a reset [1]. The first patch will add a write to clear already pending interrupts on init. The second patch replaces handle_level_irq with handle_edge_irq which is more appropriate for bridge irqs which are edge-triggered. The last patch finally, fixes stale interrupts by installing an .irq_enable callback, that will clear a possible pending interrupt before unmasking it. [1] http://www.spinics.net/lists/arm-kernel/msg302106.html Sebastian Hesselbarth (3): irqchip: orion: clear bridge cause register on init irqchip: orion: use handle_edge_irq on bridge irqs irqchip: orion: clear stale interrupts in irq_enable drivers/irqchip/irq-orion.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) --- Cc: Thomas Gleixner <[email protected]> Cc: Jason Cooper <[email protected]> Cc: Andrew Lunn <[email protected]> Cc: Gregory Clement <[email protected]> Cc: Jason Gunthorpe <[email protected]> Cc: Ezequiel Garcia <[email protected]> Cc: [email protected] Cc: [email protected] -- 1.8.5.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
