Messages in this thread | | | From | Sebastian Hesselbarth <> | Subject | [PATCH 0/3] irqchip: orion: bridge irq fixes for v3.14-rc1 | Date | Thu, 23 Jan 2014 23:38:03 +0100 |
| |
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 <tglx@linutronix.de> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Gregory Clement <gregory.clement@free-electrons.com> Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Cc: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org -- 1.8.5.2
| |