[PATCH net-next 2/6] drivers/ieee802154/at86rf230: rework irq handler
From: Alexander Smirnov <hidden>
Date: 2012-07-09 10:26:38
Subsystem:
the rest · Maintainer:
Linus Torvalds
Fix LOCKDEP bug message for the irq handler spinlock. Make the irq processing code more explicit and stable. Signed-off-by: Alexander Smirnov <redacted> --- drivers/ieee802154/at86rf230.c | 14 ++++++-------- 1 files changed, 6 insertions(+), 8 deletions(-)
diff --git a/drivers/ieee802154/at86rf230.c b/drivers/ieee802154/at86rf230.c
index 902e38b..17b8320 100644
--- a/drivers/ieee802154/at86rf230.c
+++ b/drivers/ieee802154/at86rf230.c@@ -652,22 +652,20 @@ static void at86rf230_irqwork(struct work_struct *work) } } - if (lp->irq_disabled) { - lp->irq_disabled = 0; - enable_irq(lp->spi->irq); - } + lp->irq_disabled = 0; spin_unlock_irqrestore(&lp->lock, flags); + + enable_irq(lp->spi->irq); } static irqreturn_t at86rf230_isr(int irq, void *data) { struct at86rf230_local *lp = data; + disable_irq_nosync(irq); + spin_lock(&lp->lock); - if (!lp->irq_disabled) { - disable_irq_nosync(irq); - lp->irq_disabled = 1; - } + lp->irq_disabled = 1; spin_unlock(&lp->lock); schedule_work(&lp->irqwork);
--
1.7.2.3