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authorThomas Gleixner <tglx@linutronix.de>2014-03-13 19:03:51 +0100
committerThomas Gleixner <tglx@linutronix.de>2014-03-14 13:43:33 +0100
commit328a4978df833249b099c9875738d7b72042ffe1 (patch)
tree8d35f45b166d16d5bdcbf40d12331118453384d6 /include/linux/irq.h
parent4f6e4f71c9d39cf49e0cb1be5b7721db5fbe92ac (diff)
genirq: Add a new IRQCHIP_EOI_THREADED flag
The flag is necessary for interrupt chips which require an ACK/EOI after the handler has run. In case of threaded handlers this needs to happen after the threaded handler has completed before the unmask of the interrupt. The flag is only unseful in combination with the handle_fasteoi_irq flow control handler. It can be combined with the flag IRQCHIP_EOI_IF_HANDLED, so the EOI is not issued when the interrupt is disabled or in progress. Tested-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-sunxi@googlegroups.com Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Link: http://lkml.kernel.org/r/1394733834-26839-2-git-send-email-hdegoede@redhat.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux/irq.h')
-rw-r--r--include/linux/irq.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 67ace7aa7947..d278838908cb 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -356,6 +356,7 @@ struct irq_chip {
* when irq enabled
* IRQCHIP_SKIP_SET_WAKE: Skip chip.irq_set_wake(), for this irq chip
* IRQCHIP_ONESHOT_SAFE: One shot does not require mask/unmask
+ * IRQCHIP_EOI_THREADED: Chip requires eoi() on unmask in threaded mode
*/
enum {
IRQCHIP_SET_TYPE_MASKED = (1 << 0),
@@ -364,6 +365,7 @@ enum {
IRQCHIP_ONOFFLINE_ENABLED = (1 << 3),
IRQCHIP_SKIP_SET_WAKE = (1 << 4),
IRQCHIP_ONESHOT_SAFE = (1 << 5),
+ IRQCHIP_EOI_THREADED = (1 << 6),
};
/* This include will go away once we isolated irq_desc usage to core code */