Re: [RFC PATCH 3/9] hwmon: (lm90) add support to handle irq

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On 02/20/2013 08:00 AM, Stephen Warren wrote:
On 02/18/2013 04:30 AM, Wei Ni wrote:
Add support to handle irq. When the temperature touch the limit value, the
driver can handle the interrupt.

diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c

+static void lm90_irq_work(struct work_struct *work)
...
+	enable_irq(client->irq);
+}
+
+static irqreturn_t lm90_irq(int irq, void *dev_id)
+{
+	struct lm90_data *data = dev_id;
+
+	disable_irq_nosync(irq);

I think IRQF_ONESHOT would enable you to remove the manual
enable/disable_irq calls.

Oh, right. Using a threaded IRQ with IRQF_ONESHOT would make that happen transparently. Wasn't aware of that, thanks.

Alex.



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