From dbee356262bb1c84cfa585530e33e7003534052a Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Fri, 17 Oct 2008 17:51:13 +0200 Subject: [PATCH] hwmon: (ams) Simplify IRQ handling routine Simplify the IRQ handling routine of ams driver. Signed-off-by: Dmitry Torokhov Signed-off-by: Johannes Berg Signed-off-by: Jean Delvare --- drivers/hwmon/ams/ams-core.c | 48 +++++++++++++++--------------------- 1 file changed, 20 insertions(+), 28 deletions(-) diff --git a/drivers/hwmon/ams/ams-core.c b/drivers/hwmon/ams/ams-core.c index 9b4a0e7a564f..6c9ace1b76f6 100644 --- a/drivers/hwmon/ams/ams-core.c +++ b/drivers/hwmon/ams/ams-core.c @@ -99,40 +99,32 @@ static struct pmf_irq_client ams_shock_client = { */ static void ams_worker(struct work_struct *work) { + unsigned long flags; + u8 irqs_to_clear; + mutex_lock(&ams_info.lock); - if (ams_info.has_device) { - unsigned long flags; + spin_lock_irqsave(&ams_info.irq_lock, flags); + irqs_to_clear = ams_info.worker_irqs; - spin_lock_irqsave(&ams_info.irq_lock, flags); + if (ams_info.worker_irqs & AMS_IRQ_FREEFALL) { + if (verbose) + printk(KERN_INFO "ams: freefall detected!\n"); - if (ams_info.worker_irqs & AMS_IRQ_FREEFALL) { - if (verbose) - printk(KERN_INFO "ams: freefall detected!\n"); - - ams_info.worker_irqs &= ~AMS_IRQ_FREEFALL; - - /* we must call this with interrupts enabled */ - spin_unlock_irqrestore(&ams_info.irq_lock, flags); - ams_info.clear_irq(AMS_IRQ_FREEFALL); - spin_lock_irqsave(&ams_info.irq_lock, flags); - } - - if (ams_info.worker_irqs & AMS_IRQ_SHOCK) { - if (verbose) - printk(KERN_INFO "ams: shock detected!\n"); - - ams_info.worker_irqs &= ~AMS_IRQ_SHOCK; - - /* we must call this with interrupts enabled */ - spin_unlock_irqrestore(&ams_info.irq_lock, flags); - ams_info.clear_irq(AMS_IRQ_SHOCK); - spin_lock_irqsave(&ams_info.irq_lock, flags); - } - - spin_unlock_irqrestore(&ams_info.irq_lock, flags); + ams_info.worker_irqs &= ~AMS_IRQ_FREEFALL; } + if (ams_info.worker_irqs & AMS_IRQ_SHOCK) { + if (verbose) + printk(KERN_INFO "ams: shock detected!\n"); + + ams_info.worker_irqs &= ~AMS_IRQ_SHOCK; + } + + spin_unlock_irqrestore(&ams_info.irq_lock, flags); + + ams_info.clear_irq(irqs_to_clear); + mutex_unlock(&ams_info.lock); }