Messages in this thread Patch in this message | | | From | Andreas Fenkart <> | Subject | [RESEND][PATCH 1/1] genirq: outline lazy disable in kerneldoc of irq_disable function. | Date | Tue, 14 May 2013 23:15:44 +0200 |
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comment taken from changelog of d209a699a0b975ad
Signed-off-by: Andreas Fenkart <andreas.fenkart@streamunlimited.com> --- kernel/irq/chip.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index cbd97ce..ba1f076 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -213,6 +213,16 @@ void irq_enable(struct irq_desc *desc) irq_state_clr_masked(desc); } +/** + * irq_disable - disable interrupt generation + * @desc: irq descriptor which should be disabled + * + * If the chip does not implement the irq_disable callback, we + * use a lazy disable approach. That means we mark the interrupt + * disabled, but leave the hardware unmasked. If an interrupt + * happens, then the interrupt flow handler masks the line at the + * hardware level and marks it pending. + */ void irq_disable(struct irq_desc *desc) { irq_state_set_disabled(desc); -- 1.7.10.4
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