On Mon, 28 Mar 2011, Par-Gunnar Hjalmdahl wrote:
This wants to be split up for review.
+/**
+ * cts_interrupt() - Called to handle CTS interrupt.
+ * @irq: Interrupt that occurred.
+ * @dev_id: Device ID where interrupt occurred.
+ *
+ * The cts_interrupt() function is called if interrupt on CTS occurred.
+ * It disables the interrupt and starts a new work thread to handle
+ * the interrupt.
+ */
+static irqreturn_t cts_interrupt(int irq, void *dev_id)
+{
+ struct uart_info *uart_info = dev_get_drvdata(dev_id);
+#ifdef CONFIG_PM
+ disable_irq_wake(irq);
+#endif
+ disable_irq_nosync(irq);
+
+ /* Create work and leave IRQ context. */
+ (void)create_work_item(uart_info, handle_cts_irq);
+
+ return IRQ_HANDLED;
+}
Have you thought about using a threaded interrupt handler? That would
make all this work cruft go away.
Thanks,
tglx