From 280129476512b7e18c1ec397383c4badd300e8fc Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 26 Aug 2009 16:17:59 +0200 Subject: [PATCH] genirq: Do not mask edge ONESHOT interrupts commit 7f072a34719f7064189fd40d41f1b98d6bdbf653 in tip. Edge type oneshot interrupts should not be masked for forced threading. We might lose interrupts. Signed-off-by: Thomas Gleixner Signed-off-by: Paul Gortmaker --- kernel/irq/chip.c | 7 ++++++- 1 files changed, 6 insertions(+), 1 deletions(-) diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index 2c2214d..77403e9 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -584,7 +584,12 @@ handle_edge_irq(unsigned int irq, struct irq_desc *desc) { raw_spin_lock(&desc->lock); - desc->status &= ~(IRQ_REPLAY | IRQ_WAITING); + /* + * Edge irqs can be requested with IRQF_ONESHOT set. RT + * (ab)uses this for enforced irq threading, but we do not + * want to mask edge type interrupts. Clear the oneshot flag. + */ + desc->status &= ~(IRQ_REPLAY | IRQ_WAITING | IRQ_ONESHOT); /* * If we're currently running this IRQ, or its disabled, -- 1.7.0.4